Ch. 1 Introduction

Front 1

Name 3 applications for feedback control systems.

Back 1

Guided missiles, automatic gain control in radio receivers, satellite tracking antenna

Front 2

Name 3 reasons for using feedback control systems and at least 1 reason for not using them.

Back 2

Yes - power gain, remote control, parameter conversion; No - Expense, complexity

Front 3

Give 3 examples of Open-Loop systems.

Back 3

Motor, Low Pass Filter, Inertia supported between two bearings

Front 4

Functionally, how do closed-loop systems differ from open-loop systems?

Back 4

Closed-loop systems compensate for disturbances by measuring the response, comparing it to
the input response (the desired output), and then correcting the output response.

Front 5

State one condition under which the error signal of a feedback control system would not be the difference between the input and the output.

Back 5

Under the condition that the feedback element is other than unity

Front 6

If the error signal is not the difference between input and output, by what general name can we describe the error signal?

Back 6

Actuating Signal

Front 7

Name two advantages of having a computer in the loop.

Back 7

Multiple subsystems can time share the controller. Any adjustments to the controller can be implemented with simply software changes.

Front 8

Name the 3 major design criteria for control systems.

Back 8

Stability, Transient Response, and Steady-State Error

Front 9

Name the 2 parts of a system's response.

Back 9

Steady-State, Transient

Front 10

Physically, what happens to a system that is unstable?

Back 10

It follows a growing transient response until the steady-state response is no longer visible. The system will either destroy itself, reach an equilibrium state because of saturation in driving amplifiers, or hit limit stops.