WorksheetsGroup4 Activity_Common Control Challenges
Total questions: 14
Worksheet time: 28mins
What is unwanted input that affect the performance of a control system?
Stability
Disturbance
Noise
Signal
What is a fundamental requirement in process control, referring to a system’s ability to maintain controlled, predictable behavior in response to disturbances or changes in input?
Stability
Disturbance
Noise
Steady
It refers to the function of maintaining a process within a specific range of capability through the use of feedback, correction, and other techniques.
Procedure
Method
Process Control
Feedback Control
It describes a property of a system where any bounded input will produce a bounded output.
(a)
What are the 2 critical factors of control system?
(a)
What are the 2 types of disturbances?
(a)
The difference between the desired output, R(s), and the actual output, (Ys) .
(a)
The ratio of the change in the system transfer function to the change of a process transfer function (or parameter) for a small incremental change.
(a)
L(s) = Gc(s)G(s) is known as?
(a)
Which of the following statements is TRUE regarding the relationship between S(s) and C(s)?
S(s) + C(s) = L(s)
S(s) ⋅ C(s) = 1
S(s) + C(s) = 1
(S(s)) / (C(s)) = L(s)
Where in the frequency spectrum does measurement noise most commonly occur?
At low frequencies, similar to reference signals and disturbances
Uniformly across all frequencies
Only at the system’s natural frequency
At high frequencies, often due to sensor and electrical noise
What does this imply about the behavior of the error signal at low frequencies if ∣|S(jω)| ≈ 0?
The error signal will be large at low frequencies
The system cannot reject low-frequency disturbances
The error signal will be small, indicating good tracking performance
The error signal becomes equal to the input signal
Which of the following best represents the system's sensitivity to robustness (i.e., how sensitive it is to model uncertainty)?
The complementary sensitivity function C(s)
The sensitivity function S(s)
The open-loop transfer function L(s)
The error signal E(s)
Which of the following is an advantage of an open-loop control system compared to a closed-loop system?
It is generally simpler, cheaper, and easier to implement and it automatically corrects errors due to disturbances
It has better performance in the presence of modeling uncertainty
It is generally simpler, cheaper, and easier to implement
It provides better accuracy and precision under all conditions
