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Worksheetsopen loop and closed loop control systems part 2
Total questions: 15
Worksheet time: 45mins
1. The movement of the robot is an open loop control is predefined.
True
False
Open loop control is more expensive compared to closed loop control.
True
False
Open loop control needs ____________ from sensor.
servo
feedback
no-feedback
In open loop control ,we don’t have information about the robot’s status
True
False
Open Loop control is a flexible control.
True
False
Open loop control is complex.
True
False
With feedback _______ increases
system stability
sensitivity
gain
effects of disturbing signals
A control system in which the control action is somehow dependent on the output is known as
Open loop system
Semiclosed loop system
Closed loop system
None of the above
In open loop system____
the control action depends on the size of the system
the control action depends on system variables
the control action depends on the input signal
the control action is independent of the output
Reference input minus the primary feedback is called ________ signal
Manipulated variable
Error signal
Zero signal
Primary feedback
A third-order system will have:
3 poles
3 zeros
1 Zero and 2 poles
1 pole and 2 zeros
A signal other than the reference input that tends to affect the value of controlled variable is known as
Disturbance
Command
Control element
Reference input
Benefits of feedback:
Performance of system is normal.
Need for system much larger path gain and system instability.
Controlled variable accurately follows the desired value
Affected by parameter variations
What are the disadvantages of an open-loop control system?
Accurate
Inaccurate
Easy to construct
Less effected by noise
