9
ASSIGNMENT 2
Textbook assignment: Chapter 2, “Servos,” pages 2-1 through 2-38. Chapter 3, “Gyros,” pages 3-1
through 3-27. Chapter 4, “Related Devices,” pages 4-1 through 4-12.
_____________________________________________________________________________________
2-1. A servo is normally designed to move (a)
what type of load to (b) what type of
positions?
1. (a) Small
(b) Exact
2. (a) Small
(b) Approximate
3. (a) Large
(b) Exact
4. (a) Large
(b) Approximate
2-2. Servo systems can be found in which of
the following forms?
1. Pneumatic
2. Hydraulic
3. Electromechanical
4. Each of the above
2-3. Which of the following systems are
control systems?
1. Open-loop
2. Closed-loop
3. Both 1 and 2 above
4. Inductive-loop
2-4. A servo system is defined as which of the
following types of control systems?
1. Open-loop
2. Closed-loop
3. Both 1 and 2 above
4. Inductive-loop
2-5. Which of the following is a basic
difference between an open-loop control
system and a closed-loop control system?
1. Number of loops
2. Size of the load
3. Speed of movement
4. System of feedback
_______________________________________
IN ANSWERING QUESTIONS 2-6
THROUGH 2-8, MATCH THE FUNCTION
LISTED IN COLUMN B TO THE SERVO
COMPONENT LISTED IN COLUMN A
THAT ACCOMPLISHES THE FUNCTION.
A. SERVO
COMPONENTS
2-6. Synchro control
system
2-7. Servo amplifier
2-8. Servo motor
B. FUNCTIONS
1. Moves the load
2. Provides power
3. Controls
movement
4. Converts dc to ac
_______________________________________
2-9. In a dc position servo system, what
characteristic of the error signal
determines the direction in which the
load is driven?
1. Amplitude
2. Frequency
3. Polarity
4. Phase
2-10. The sum point in a position servo system
combines what two signals to produce an
error signal?
1. Response and output
2. Feedback and Output
3. Feedback and input
4. Output and input
