The block diagram of an armature controlled DC motor is Shown below. Design a controller for positioning the load 1- Start the design by examining the simple proportional controller, K(s)=Kp, using the two gains of low and high. e.g. 2 and 40. a * Draw block diagram of armature controlled dc motor | Armature controlled dc motor block diagram | Armature controlled dc motor | block diagram of armature co*.. The writers of Block Diagram Of Armature Controlled Dc Motor have made all reasonable attempts to offer latest and precise information and facts for the readers of this publication. The creators will not be held accountable for any unintentional flaws or omissions that may be found Answer to The block diagram model of an armature-current-controlled DC motor is shown in Figure AP5.6.(a) Determine the...

The Block Diagram for a DC Motor. To derive the block diagram representation for a separately excited DC machine, firstly we must derive the Dynamic of the System, the differential equations that govern the DC machine. After that, we use the Laplace Transform to build the block diagram. The motor can be controlled by field or by armature After reading this topic Armature controlled DC Servomotor in the control system, you will understand the theory, derivation, expressions, transfer function, and Block diagram. Let us consider the Armature controlled DC servomotor as shown in Figure 1 block digram of this DC drive is shown in Fig.8.2. Fig.8.1 Schematic diagram of speed-controlled d.c. motor drive. Source Fig.8.2 Block diagram of the d.c. drive. Power using armature voltage control by AC-to-DC converters .These single-phase and three-phase converters (drives) are shown in Figs 8.8 and.

The electrical system consists of the armature and the field circuit but for analysis purpose, only the armature circuit is considered because the field is excited by a constant voltage.The mechanical system consist of the rotating part of the motor and load connected to the shaft of the motor.The armature controlled DC motor speed control system is shown in the below figure A common actuator in control systems is the DC motor. It directly provides rotary motion and, coupled with wheels or drums and cables, can provide translational motion. The electric circuit of the armature and the free-body diagram of the rotor are shown in the following figure

* Armature Resistance Control of DC Motor*. Shunt Motor. The connection diagram of a shunt motor of the armature resistance control method is shown below. In this method, a variable resistor R e is put in the armature circuit. The variation in the variable resistance does not affect the flux as the field is directly connected to the supply mains The block diagram of a dc motor (armature-controlled) system is shown in Fig.8.5 Figure 8-5 Block diagram of a dc motor (armature-controlled) system Where: R a is the resistance of the motor armature = 1.7 ohms L be zero (this is the case of a DC motor), with reference to the quantity of charge dq found in an in nitesimal section d~' of the wire, the force in equation (5) may be computed as a function of i To derive the **block** **diagram** representation for a separately excited **DC** machine, firstly we must derive the Dynamic of the System, the differential equations that govern the **DC** machine. After that, we use the Laplace Transform to build the **block** **diagram**. The **motor** can be **controlled** by field or by **armature**

ME 360 Control Systems Armature Controlled DC Motor Transfer Functions (Reference: Dorf and Bishop, Modern Control Systems, 9th Ed., Prentice-Hall, Inc. 2001) o In a armature-current controlled DC motor, the field current if is held constant, and the armature current is controlled through the armature voltage Va ET 438a Automatic Control Systems Technology 1 LEARNING OBJECTIVES 2 x After this presentation you will be able to: Write the transfer function for an armature controlled dc motor. Write a transfer function for a dc motor that relates input voltage to shaft position. Represent a mechanical load using a mathematical model 39 Litton - Clifton Precision Servo DC Motor JDH-2250 18 310 Schematic Diagram of the DC Motor 19 311 Block Diagram of the Open-Loop Permanent-Magnet 21 DC Motor 312 Block Diagram of the Open-Loop Servo Actuated by 21 Permanent-Magnet DC Motor 313 Block Diagram of the Closed-Loop Servo with PID 22 Controller. Report shipping damage to the carrier

- The back emf is proportional to the speed of the motor and hence . The block diagram representation of the armature controlled DC servo motor is developed in Steps. Usually the inductance of the armature winding is small and hence neglected. Field Controlled Dc Servo Motor. The field servo motor
- In field controlled DC motors, the input field volatge controls the motor shaft output while the armature current remains constant. The DC motor operates in linear region for servo motor application. Hence, the air-gap flux is proportional of the field current as. The torque developed by the motor is proportional to the armature current i.e
- DC Motor Armature Speed Control with PID Controller the various open loop and closed loop responses of the armature speed of a DC motor to various types of input. The DC motor system block.
- Armature controlled dc motor via matlap Simulink - part1: block digramمحاكات ماتلاب لمادة تحكم part 2https://youtu.be/AjnJG1xnWf
- Here, you can see the DC motor has rotor winding or armature coil, magnetic poles, casing, commutator, shaft, etc. The working principle of the DC motor is very simple. If the motor having a permanent magnet then just applying a dc voltage to its armature, it will rotate
- Basic operation of DC motor. A motor is an actuator, converting electrical energy in to rotational mechanical energy.A motor requiring a DC power supply for operation is termed a DC motor.DC motors are widely used in control applications like robotics, tape drives, machines and many more.. Separately excited DC motors are suitable for control applications because of separate field and armature.
- The circuit diagram, block diagram and transfer function of these are given below: Armature Controlled DC Servomotor Circuit Diagram. In this motor, the field current is held constant and armature current is varied to control the torque

In armature-controlled DC motors, the applied voltage Va controls the angular velocity w of the shaft. This example shows two DC motor control techniques for reducing the sensitivity of w to load variations (changes in the torque opposed by the motor load). A simplified model of the DC motor is shown above. The torque Td models load disturbances and state feedback Controller with integral control is compared [10,11]. II. DC MOTOR MODELING A DC motor with armature control and a fixed field is assumed and the schematic diagram of the motor is shown in Fig.1. x e K T T x b T Fig.1: Schematic Diagram of the DC motor The dynamic behaviour of the DC motor is given by th The functional block diagram of a DC motor armature voltage control system is shown in Fig.2: Fig. 2: DC motor armature control system block diagram. The transfer function of DC motor speed with respect to the input voltage can be written as follows, ѡ ˘ ˇ ∗ ˙˝ ˛∗ ˙˚ ˙ ˘∗ ˜ (1 This will let us control the motor using Simulink. Connect the Simulink-PS block to the Controlled Voltage Source input. Double-click that signal connection and set the signal name to Voltage. Double-click on the Simulink-PS block and set Input signal units to V. Connect the Step block to the Simulink-PS block Brushed DC Motors K. Craig 2 • Time-Domain Block Diagrams, State Equations, and Transfer Functions • Elementary Approach to Permanent -Magnet DC Motor Modeling • Control of DC Motors • Geared Systems, Optimum Gear Ratios, and Motor Selection • Motor Selection Consideration

Block Diagram of Armature Controlled D.C Motor V a i a T R a L a J The DC-Motor control system Desi red rot at e speed n Regul at or Tri gger Rect i f i er DC mot or Techomet er Act uat or cont rol l er Process measurement ( Sensor) comparat or Act ual rot at e speed Figure 3. Block Diagram of an Armature-Controlled dc Motor with Direct Coupled Load. speed while the total rotational inertia determine the rate of speed change. This controller monitors the position of the antenna, so position must be related to the motor speed. Equation (6) uses the rate of change in position to express motor speed. (t) dt d.

- The block diagram of an armature-controlled DC motor is established based on the research of control parameters. Through analyzing of the control characteristic of the armature-controlled dc motor, we set up block diagram of a speed-control and a position-control of armature-controlled DC motor. The influence factors o
- DC motor block diagram: IJERT With the advent of the control systems, any system can be represented in the form of a block diagram in which each block represents the specific components of the system and the connectivity between each block for proper functioning is obtained by using the lines. The DC motor can als
- Modeling of DC motor What is DC motor and how does it work? Derivation of a transfer function Block diagram with feedbackBlock diagram with feedback Next StabilityStability of linear control systems, one of the most of linear control systems, one of the most important topics in feedback control Exercises Read Section 2.7, 2.8
- al Voltage. As depicted in the above block diagram, a microcontroller is used to feed PWM signals to the motor driver. The motor driver is an L293D IC which consists of H-bridge circuits to drive the motor
- It is given in figure of block diagram. 6. • Reducing block diagram, 7. Various Components of the system : • Drive motor dc armature controlled. • Load is driven through a reduction gearing to amplify torque for moving load. • Load angular position is sensed by circular potentiometer

- The armature is modelled as a circuit with resistance R the block diagram representation and Simscape based models. control. DC motor modeling uses a system identification model so that.
- The electronic controlled elevator system. of this type, a rheostat control is provided on the. components (fig. 5-25) include the elevator cam target, the sensing heads, the static logic panels, the motor. platform, and a duplicate control is provided in the. elevator machinery room. (magnetic) controller, and a three-phase drive motor
- An armature controlled D.C motor runs at 5000 rpm when 15v applied at the armature circuit. Armature resistance of the motor is 0.2 Ω, armature inductance is negligible, back emf constant is 5.5x10-2 v sec/rad, motor torque constant is 6x10-5, moment of inertia of motor 10-5, viscous friction coefficien
- Block Diagram INPUT DC CHOPPER OUTPUT (variable dc voltage) Separatel y excited dc motor DISPLAY (current ,voltage , speed) PI Controller Reference speed 10. Application of chopper in DC Motor 1) For regenerative braking of DC motor 2) Power control or motoring control 3) Choppers are used in electric cars, airplanes and spaceships, where.
- The above transfer function represented by a block diagram is as in Fig.2 . Fig2 . Motor. The armature inductance is very small in practice; hence, the transfer function of DC 3.1 motor speed to the input voltage of equation can be simplified as . 3 Model Reference Adaptive Control The adaptive control theory provides an approach t

The separately excited dc motor is most suitable for the applications requiring speed variation from very low value to high value. This type of motor is used in steel rolling mills, diesel-electric propulsion of ships, paper machines, etc. The speed control of dc motor is obtained by two methods: 01. Armature Voltage Control 29.5.1 DC Motor Drives. Until recently, the DC motor drive was the most commonly used type of electric VSD, with only very few exceptions, and is the least expensive. The mechanical commutator is an electromechanical DC-to-AC bidirectional power flow power converter, as the currents in the rotor armature coils are AC while the brush current is DC ** Block diagram of the drive mechanical part**. Setting the magnitude values in pu, current, load torque, accelerating torque, speed and motor torque results in: I a I N = i a (pu) T c M n = t c (pu) B M n = b (pu) n n o = n u (pu) M M n = m (pu) The block diagram in Figure 2 can be represented in pu as shown in Figure 3 The code line 7 is used to generate a step control input signal. The code line 14 is used to generate a zero disturbance signal. That is, we assume that the disturbance torque is not affecting the system dynamics while computing the step response. The code line 17 is used to augment the control and disturbance control signals (remember that the state-space model is defined for two control.

The equivalent **block** **diagram** **of** **armature-controlled** **DC** **motor** based on (8) is shown in Fig- 2. Fig-2: Equivalent **block** **diagram** **of** **DC** **motor**. 3. PID AND I-PD CONTROLLERS A combination of proportional, integral, and derivative action in parallel makes a traditional PID controller. The structure of a PID controller is shown in Fig- 3. method control and torque output are required dc motor is an obvious choice[1]. The state space approach is a generalized time domain method for modeling, analyzing and designing a wide range of control systems and is particularly well suited to digital computational technique. In this paper armature current an

* Week 7 Challenge: DC motor control*. AIM: (1) Modify the model of Speed control of a DC motor using BJT H-bridge such that armature current doesn't shoot up when motor changes direction from forward to reverse using MATLAB/Simulink. (2) Refer and compare the model of The Four-Quadrant Chopper DC Drive (DC7) block with H-bridge model 3.5 Block Diagram of an Armature Controller of Speed Dc Servo Motor 32 3.6 Block Diagram PID Controller For Control Speed and Position Dc Servo Motor 36 3.7 Block Diagram LQR Controller For Control Speed and Position Dc Servo Motor 37 3.8 Block Diagram of PID Controller with Dc Servo Motor System 3 Two methods of speed control of separately excited DC motors are applicable when the separately excited DC motor is supplied by a constant voltage, namely, armature control method and field control method [2]. In armature control method, a resistor can be installed in series with the armature to vary the voltage supplied to the armature Fig. 2 Spindle system block diagram Td disturbance Torque Fig. 3 Spindle system block diagram under field control Analysis. The model developed in this paper is based on general field controlled DC motor theory [16-20] and basic machine tool systems design [21-24]. While the model is developed for a specific lathe spindle system, the model ha

- simulation for position control of dc motor using fuzzy logic controller. camilo parada. related papers. performance improvements of separately excited dc motor using fuzzy logic control. by international journal of engineering technologies and management research i j e t m r journal
- al voltage applied to the armature circuit. The three most common speed control methods are ﬁeld resistance control, armature voltage control, and armature resistance control [10]. In this section, Simulin
- 1 8.0 CONTROL OF DC MOTOR DRIVES 8.1 INTRODUCTION The electric drive is a system used for motion control. Figure 8.1 shows the block diagram of an electric drive. It has three main parts: Figure 8.1 Block diagram of an electric drive. 1. Electric Motors: It may be DC motors, such as shunt, series, compound, and permanent magnet; induction motors, such as squirrel cage, wound rotor; synchronous.
- al values for the motor parameters (see MOTORTST.M)
- various condition. In practice, the DC motor is a nonlinear device and its speed varies because of change in load demand, disturbances,etc. We have implemented the PID controller algorithm which is a popular controller in industries. The block diagram of a DC motor speed control system is shown in gure(1). The motor speed is sensed by an.
- The main advantage of using field control scheme is that, as the motor is controlled by field - the controlling power requirement is much lower than rated power of the motor. Armature Controlled DC Servo Motor Theory. The figure below shows the schematic diagram for an armature controlled DC servo motor
- Configure the block that models the motor. Set the DC Motor block parameters as follows, leaving the unit settings at their default values where applicable: Electrical Torque tab: Model parameterization to By rated power, rated speed & no-load speed. Armature inductance to 0.01. No-load speed to 4000

5.2 Simulation of Generalized Model For Speed Control OF DC MOTOR . 5.2.1 Armature current waveform. 5.2.2 Speed waveform . 6. Conclusion The DC motor speed control has been successfully analyzed using chopper as a power controller and Speed and Current controller (Proportional-Integral type) based on the closed loop model of DC motor Pulse Width Modulation (PWM) Speed Control of a DC motor. We can control the speed of a motor using an open loop control or closed loop control strategy. The open loop control is the simplest form of motor control; here we simply set the drive voltage value and the motor characteristics and the load determines the operating speed & torque

Here the bode response of the modeled DC motor is depicted from Figure 7 and 8. 4.3 Performance Analysis The performance of the DC motor whose modeling is done here is analysed by using a PID controller for speed control test. The block diagram of PID controller with closed loop is depicted in Figure 9 * The speed of a DC motor (N) is equal to: Therefore speed of the 3 types of DC motors - shunt, series and compound - can be controlled by changing the quantities on the right-hand side of the equation above*. Hence the speed can be varied by changing: The terminal voltage of the armature, V. The external resistance in armature circuit, R a machine. In such a motor (separately excited DC motor), the field windings are excited by a DC current in order to create a magnetic field. In turn, the armature windings receive current from a separate DC source which results in the creation of a torque by Lenz's Law and a back electromotive force ) (EMF by Faraday's law [1]. A. Motor. DC-motor modeling: A schematic representation of an armature controlled DC-motor is given in Figure 1. For an armature controlled DC-motor, the ¯eld current if is constant and the torque Tm generated at the DC-motor shaft is given by [2{4] Tm = KTia; (2.1) where KT is the given motor torque constant (N-m/Amp) and ia isthearmaturecurrent(Amp)

A robot gripper shown in part (a) of Figure P4.17, is to be controlled so that it closes to an angle Î¸ by using a DC motor control system, as shown in part (b). The model of the control system is shown in part (c), where Km = 30, Rf = 1Î©, Kf = K1 = l, J = 0.1, and b = 1.(a).. Simulink implementation of the field resistance control method. A DC motor block of SimPower Systems toolbox is used. The DC motor block implements a separately excited DC motor. An access is provided to the field connections (F+,F-) so that the motor model can be used as a shunt-connected. The field circuit is represented by an RL circuit (R f Figure 2 Block diagram of a DC motor (armature controlled) system 3. STATE SPACE REPRESENTATION [5] Let the armature current (i xa = 1) and angular velocity (ωm = x2) be the state variable and the angular velocity be the output variable. Therefore the following state space model can represent the dynamics of dc motor. a a b. . a a m a a DC motor Specification: 220V, 2.2A, 1420 rpm Shunt type single phase. Another set up consisted of half bridge rectifier consisting of thyristor wherein the speed control for the same DC motor was carried out using the firing angle of the thyristor of the motor, an experimental measurement of armature voltage, armature current and rotor speed are performed using the NIDAQ USB-6008 data acquisition mod- ule

- \u0026 Block Diagram of Armature Controlled D.C motor Modeling a DC Motor How to Find Transfer Function of a DC Servo Motor Position and Speed Control Combined dc Motor Modeling of Geared DC Motor || Positioning Servo System Dc Motor Position System Modeling A common actuator in control systems is the DC motor. It directly provides rotary.
- ed as well as motor constant k. In Fig. 9 time response of armature Control block diagram is shown in Fig. 13. PI contro
- Armature Controlled DC SERVOMOTOR(WITH ANIMATION) DC Position ControlDIY Arduino Servo Motor : Control DC Motor Position Transfer Function \u0026 Block Diagram of Armature Controlled D.C motor COMPREHENSIVE: PID CONTROLLER for DC MOTOR with Timer Interrupts and Anti-windup A professional motor contro

Kamman - Introductory Control Systems - Armature Controlled DC Motor Transfer Functions - page: 3/3 o If the time constant of the electrical circuit is much smaller than the time constant of the inertial load dynamics, the transfer function of Eq.(6) can be reduced to a first-order transfer function April 14th, 2019 - Fig 17 shows the configuration for the speed control of a brushless DC motor unit in a block diagram Fig 17 Block Diagram of a Brushless DC Motor System The switching sequence of the inverter is decided by the signal from the hall IC in the positional detection part of the block diagram and the motor rotate Armature Controlled DC Motor. A motor is an actuator, converting electrical energy in to rotational mechanical energy. A motor requiring DC supply for operation is termed a DC motor. DC motors are widely used in control applications like robotics, tape drives, machines and many more How does DC motor work? Armature (from Dorf and Bishop book) 6 Model of DC motor ea(t) ia(t) Ra La DC motor: Block diagram Feedback system Tachometer (Page 46) Encoder (Page 44) 10 StabilityStability of linear control systems, one of the mos

FIG. 1 is a basic block diagram of the DC motor drive of this invention; and, FIG. 2 is a more detailed block diagram of basic components illustrated in FIG. 1. Referring first to FIG. 1, there is shown a DC motor including an armature 10 and field control winding 11 driven from a DC source means 12 The block diagram of a DC drive system made up of a DC motor & an electronic drive controller. The shunt motor is constructed with armature & field windings. A common classification of DC motors is by the type of field excitation winding. Shunt wound DC motors are the most commonly used type for adjustable-speed control

Block Diagram. Block diagram is drawn from input to output. Voltage creates current flow, current produces torque, and torque rotates the motor which dictates its position. Some techniques used below to create and manipulate block diagrams are covered here. Voltage to current Rearrange Laplace transform of (eq. 1) Current to torqu DC drives offer the ability to control the speed and torque of heavy-duty DC motors in various industrial and other similar applications. Speed control can be achieved using DC drives in a number of ways. Voltage can be applied to the terminals of the DC motor or external resistance can be applied in the armature II. DC MOTOR DESCRIPTION A DC motor directly provides rotary motion and coupled with wheels or drums and cables, it can provide translational motion. The electric equivalent circuit of the armature and the free-body diagram of the rotor are shown in Fig. 1. Fig.1. Schematic representation of a DC motor system [2]

A VELOCITY REGULATED DC MOTOR DRIVEN BY AN ARMATURE RECTIFIER - EFFECTS OF SHAFT TWIST AND BACKLASH APPROVED: by Ronald Eddie Nemura Thesis submitted to the Graduate Faculty of the Virginia Polytechnic Institute in candidacy for the degree of MASTER OF SCIENCE in Electrical Engineering Chairman, Dr. M. H. Hopkins, E. E. Dept Voltage controlled speed controller of dc motors was introduced for the first time by Ward Leonard in 1981 [13] and the field has witnessed a great advancement since. Choppers are used to obtain a controlled dc voltage from a fixed dc source. The speed of the separately excited DC motor can be controlled by the armature voltage Separately Excited DC motor e b R a L a L f V f R f! v a L a-> Armature Inductance R a-> Armature Resistance e b-> Back-emf J-> Moment of Inertia m d & m l->Developed and Load Torques Dynamic Equations L a di a dt +R i +e b = v e b = c 1 ˚ ! J d! dt = m d m l m d = c 2 ˚i a e bi a = m d! c 1 ˚!i a = c 2 ˚i a! Where,

From above equations the block diagram of DC motor armature control is depicated in figure(3) [5]. Figure 3. Block diagram of. DC motor. armature control. The transfer function of DC motor given by: ( )= ( The block diagram of DC motor using 4 and 5 is represented as shown in Figure 1. The seven unknown parameters R a , L a , L _ d , J, B, L d and R d are armature resistance(Ω), armature inductance(H), fictitious mutual inductance, moment of inertia (kg-m 2 ), viscous friction (Volt-sec/rad.), fiel

A block diagram for electronic control of a shunt-connected DC motor is shown in Figure 6. An alternating current supply is rectified by a combination of rectifiers and silicon-controlled rectifiers. The current taken by the motor is monitored so that current surges can be controlled by the control circuitry C. Derive the dynamic speed response characteristics relating armature voltage, load torque and speed D. Describe the realization of a variable voltage controlled source using switch mode power converters. E. Draw the block diagram a typical speed control loop for a separately excited dc motor. Introductio

The mathematical model can be expressed by **block** **diagram** according the Figure 4. Figure 4. **Block** **diagram** **of** **DC** **motor** Accurate model building is a crucial stage in practical control problems. An adequately developed system model is essential for reliability of the designed control. When the plant has uncertainties or time dependencies, or canno Here given the modeling of armature voltage control of DC motor and field current is constant. It directly provides rotary motion and, coupled with wheels or drums and cables, can provide transitional motion. The electric circuit of the armature and the free body diagram of the rotor are shown in the following figure: Fig. 5: Block diagram. Basic operation of DC motor []. A motor is an actuator, converting electrical energy in to rotational mechanical energy.A motor requiring a DC power supply for operation is termed a DC motor.DC motors are widely used in control applications like robotics, tape drives, machines and many more.. Separately excited DC motors are suitable for control applications because of separate field and. independent from the armature. Brushless DC motors are also in this category since the armature magnet is permanent and thus is independent from the field. ef Rf Lf ea field armature Ra La eb Figure 2. Schematic Diagram of a Separately Excited DC Motor Speed control of a separately excited motor can be accomplished either by changing the. Figure 10.7 shows a block diagram of a feedback-control system that can be used to regulate the speed of a separately excited or shunt-connected dc motor. The inputs to the dc-motor block include the armature voltage and the field current as well as the load torque T load

Refer to the following wiring diagrams for proper location when connecting DC Voltage, Armature, and Speedpot wires to the control. CAUTION !! TURN POWER OFF WHILE MAKING CONNECTIONS. Warning: Do not reverse positive or negative battery leads, this will damage the control. To change motor direction, interchange the positive and negative. The power supply of a DC motors connects directly to the field of the motor which allows for precise voltage control, and is necessary for speed and torque control applications. DC drives, because of their simplicity, ease of application, reliability and favorable cost have long been a backbone of industrial applications Fig. 2 describes the DC motor armature control system function block diagram from equations (1) to (6). Figure 2: DC motor armature voltage control system function Diagram The transfer function of DC motor speed with respect to the input voltage can be written as follows, \theta (7

II. Dc Motor Speed Control System A. Method of DC Motor Speed Control The speed control system was implemented for a DC motor. Speed control of DC motor is by two main methods. 1. Armature control method 2. Field control method Field Control In this method, the field current or current through stator is varied to control the speed of the motor. A system for controlling separately excited shunt-wound dc motors, where control is achieved through microprocessor-based independent PWM control of a chopper (armature) and an H-bridge (field). Connected to the armature is an armature voltage amplifier for varying the applied armature voltage (94). A field voltage amplifier is also provided for determining the direction of motor rotation and.

Block diagram of antenna control mechanism II. Mathematical Modeling of DC (Servo) motor System Fig.2. represents the DC (servo) motor model with parameters defined in Table 1. For an armature-controlled separately-excited DC motor, the voltage applied to the armature of the motor is varied without changing the voltage applied to the field CONTROL SYSTEM LAB (EE332) B.E. III/IV, EEE & EIE 6 MUFFAKHAM JAH COLLEGE OF ENGG&TECH, ROAD NO3, BANJARAHILLS, HYD -500034 Block Diagram Of DC Servomotor Procedure: - Armature Control: 1. Adjust T1 at setting with the help of knob K. 2

BLOCK DIAGRAM. Fig. 2: Block Diagram of 8051 Microcontroller based Mobile Phone controlled DC Motor Controller. DESCRIPTION OF BLOCK DIAGRAM:-· AT89S52 controller of 8051family from ATMEL is the heart of the system which works on 5V DC supply. It is used to control the operation of whole system Figure. 4 SEPARATELY EXCITED DC MOTOR 8 Figure. 5 REGION OF CONSTANT TORQUE AND POWER 10 Figure. 6 MODELLING OF DC MOTOR 11 Figure. 7 BLOCK DIAGRAM OF SEPARATELY EXCITED DC MOTOR 12 Figure. 8 SPEED CONTROL LAYOUT 14 Figure. 9 Block Model of Separately Excited DC Motor 17 Figure. 10 Complete layout for DC motor speed control 1

Speed control of Shunt motor. 1. Flux control method. It is already explained above that the speed of a dc motor is inversely proportional to the flux per pole. Thus by decreasing the flux, speed can be increased and vice versa. To control the flux, a rheostat is added in series with the field winding, as shown in the circuit diagram d) Add Block: The gain block and the constant block are connected together using an 'Add' block. The 'Add' block is then connected to the 'Tm' terminal of the DC chopper block. RESULT: Hence we have simulated the motor speed, armature current and armature voltage using the FTP75 drive cycle and the behavior have been plotted in the above graph The separately excited DC motor (S.E.D.C) with armature control is one in which the speed is controlled by the armature voltage V a and field current I f is kept constant. Effect of armature reaction is being neglected, as the motor used has either interpoles or compensating windings. Fig 2. Circuit diagram of S.E.DC motor A common actuator in control systems is the DC motor. It directly provides rotary motion and, coupled with wheels or drums and cables, can provide transitional motion. The electric circuit of the armature and the free body diagram of the rotor are shown in the following figure Draw schematic diagram of armature controlled DC motor and its block diagram with closed loop. Derive transfer function for armature controlled DC motor 1:15 A DC Motor Transfer Functions (Reference: Dorf and Bishop, Modern Control Systems, 9th Ed., Prentice-Hall, Inc. 2001) The figure at the right represents a DC motor attached to an inertial load. The voltages applied to the field and armature sides of the motor are represented byV f and V a. The resistances and inductances of the field and armature