Evaluate the transfer function, Electrical Engineering

Assignment Help:

Since dc motors of various types are used extensively in control systems, it is essential for analytical purposes that we establish a mathematical model for the dc motor. Let us consider the case of a separately excited dc motor with constant field excitation. The schematic representation of the model of a dc motor is shown in Figure. We will investigate how the speed of the motor responds to changes in the voltage applied to the armature terminals. The linear analysis involves electrical transients in the armature circuit and the dynamics of the mechanical load driven by the motor. At a constant motor field current If, the electromagnetic torque and the generated emf are given by

Te = Kmia

ea = Kmωm

where Km = kIf is a constant, which is also the ratio eam. In terms of the magnetization curve, ea is the generated emf corresponding to the field current If at the speed ωm. Let us now try to find the transfer function that relates m(s) to Vt(s).

1543_Evaluate the transfer function.png


Related Discussions:- Evaluate the transfer function

Asynchronous and synchronous logic design, One of the simplest circuits is ...

One of the simplest circuits is the asynchronous or ' ripple' counter. Below is shown the circuit diagram of a simple 3 stage ripple counter. The operation of this circuit

Determine the maximum value of the average torque, Q. A two-pole rotating m...

Q. A two-pole rotating machine with a singly excited magnetic field system as its stator and a rotor (that carries no coil) has a stator-coil inductance that can be approximated by

Draw and explain a monostable multivibrator, Q. Draw and explain a monostab...

Q. Draw and explain a monostable multivibrator ? The monostable configuration consists of two amplifier stages interconnected in such a manner as to possess one stable state. T

Determine average of integers by assembly language program, Write an assemb...

Write an assembly language program to determine average of 'n' integers. Ans  MOV AX, 0000; Initial sum 0000  MOV BX, 0000  MOV SI, 0201H  MOV CX, [SI]  BACK: I

Calculate terminal voltage, A permanent magnet DC motor is being considered...

A permanent magnet DC motor is being considered for use as a drive motor for a vehicle. The motor is known to have the following properties No load speed @ 100 V = 2000 rpm torq

What do you mean by feedback in amplification, Q. What do you mean by Feedb...

Q. What do you mean by Feedback in amplification? Feedback :   Feedback in its broadest sense means that a certain amount of the output signal is "fed back" into the input. An

Compute the force, Q. Consider a current element I 1 d ¯ l 1 = 10 dz ¯ az...

Q. Consider a current element I 1 d ¯ l 1 = 10 dz ¯ az kA located at (0,0,1) and another I 2 d ¯ l 2 = 5dx ¯ ax kA located at (0,1,0). Compute d ¯ F 21 and d ¯ F 12 experienc

Digital electronics, Design a logic circuit when to provide an output when ...

Design a logic circuit when to provide an output when any two or three of four switches are closed.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd