Control Systems

Front

What is a control system?

Back

A system of getting output by regulating, commanding, and directing the input.

Front

What are the basic components of feedback/closed-loop control systems?

Back

1. Plant 2. Feedback 3. Error detector 4. Controller

Front

What is the function of the error detector in a control system?

Back

To compare the reference input with the feedback signal.

Front

What is negative feedback?

Back

Implies that the summing point is a subtractor.

Front

What is positive feedback?

Back

Implies that the summing point is an adder.

Front

What are the advantages of closed-loop control systems?

Back

1. High Accuracy 2. Quick Response 3. Flexibility 4. Reduces the effect of distortion

Front

What is a servomechanism?

Back

A feedback control system used to control position, velocity, and acceleration.

Front

What is the principle of superposition?

Back

The response produced by the simultaneous application of two different forcing functions is the sum of the two individual responses.

Front

What is a transfer function?

Back

The ratio of the Laplace transform of the output variable to the Laplace transform of the input variable.

Front

What is the characteristic equation in control systems?

Back

The denominator polynomial R(s), when equal to zero.