Section 4

Question 1

What are the four steps in the Control System Design process flowchart?

Answer 1

1. Identification of Data-Based Model
2. Estimation of Control Algorithm
3. Evaluation by simulation
4. Implimentation

Question 2

Give an example/explanation of a control system with no steady state tracking.

Answer 2

To track the Set Point the Steady State Gain of the whole system should be 1 (unity). That is Yk=Yd.

With a purely proportional controller the SSG will always be less than 1 so the output cannot ever achieve the Set Point.

Question 3

Define controllable model

Answer 3

A Model is controllable if the designer can place poles at arbitary positions on the complex z plane.

Question 4

What is the transfer function for an intergrator block?

Answer 4

Ki/(1-z^-1)