Principles of Direct Current
Machines
Dr. Ali Ahmed Adam Ismail
Principles of Direct Current
Machines
Learning Out comes
1- to have knowledge of DC machines basics
2- to have knowledge of basic DC generators
3-To have knowledge of basic DC motors
4- to be
08/09/2015
Feedback Control Systems
Week 1
Introduction to Control Systems
Instructor : Dr. Raouf Fareh
Spring Semester 2014/2015
Outline
Introduction to Linear Control
History of automatic control
Manual and Automatic Control
Control System Design
2
1
08
13/09/2015
Feedback Control Systems
Week 2
Bloc diagram
Instructor : Dr. Raouf Fareh
Fall Semester 2015/2016
Block Diagram
Introduction
Canonical Form of A Feedback Control System
Reduction techniques
2
1
13/09/2015
Introduction
A Block Diagram is a shor
2015-09-13
Feedback Control Systems
Week 2
Transfer Function of Linear Systems
Instructor : Dr. Raouf Fareh
Fall Semester 2015/2016
Transfer Function
Transfer Function is the ratio of Laplace transform of the output to the Laplace transform
of the input.
04/10/2015
Feedback Control Systems
Week 4
Signal Flow Graphs
Instructor : Dr. Raouf Fareh
Fall Semester 2015/2016
1
Outline
Introduction to Signal Flow Graphs
Definitions
Terminologies
Examples
Masons Gain Formula
Examples
Signal Flow Graph from Bloc
13/09/2015
Feedback Control Systems
Week 1
Differential Equation
Instructor : Dr. Raouf Fareh
Fall Semester 2015
Differential Equation of Physical Systems
How do we obtain the equations?
Physical law of the process
Differential Equation
Examples:
i.
ii.
M
Principles of Direct Current
Machines
Dr. Ali Ahmed Adam Ismail
Principles of Direct Current
Machines
Learning Out comes
1- to have knowledge of DC machines basics
2- to have knowledge of basic DC generators
3-To have knowledge of basic DC motors
4- to be
Synchronous
Generators
Dr. Ali Ahmed Adam Ismail
Synchronous Generator (Alternator)
Are the primary source of all electrical energy
Commonly used to convert the mechanical power
output of steam turbines, gas turbines, hydro turbines
into electrical power
Principles of Direct Current
Machines
Dr. Ali Ahmed Adam Ismail
10.22 General Speed equation for a DC Motor
A break in the shunt field circuit of a lightly loaded motor may cause the
machine to accelerate to highly dangerous speed
10.32 Dynamic Behavior d
Principles of Direct Current
Machines
Dr. Ali Ahmed Adam Ismail
10.13 Dynamic Behavior When Loading &
unloading a DC motor
Assume the machine is initially running on
no load at constant speed then at time t1 a
load torque is applied to the shaft of the
mo
2015-10-08
Feedback Control Systems
Signal Flow Graphs
Examples
Example 1
1
2015-10-08
Consider the signal flow graph below and identify the
following
a)
b)
c)
d)
e)
f)
g)
Input node.
Output node.
Forward paths.
Feedback paths.
Self loop.
Determine the lo