Podcast
Questions and Answers
What is the primary purpose of a lag compensator in a control system?
What is the primary purpose of a lag compensator in a control system?
- To introduce high-frequency gains
- To increase the system's transient response speed
- To reduce steady-state error (correct)
- To enhance stability margins
How does the introduction of a lag compensator affect the phase shift in a control system?
How does the introduction of a lag compensator affect the phase shift in a control system?
- It results in zero phase shift
- It has no effect on phase
- It introduces a phase lead
- It introduces a phase lag (correct)
What is a defining characteristic of the pole-zero configuration in a lag compensator?
What is a defining characteristic of the pole-zero configuration in a lag compensator?
- The pole is closer to the origin than the zero (correct)
- The pole is located farther from the origin than the zero
- The pole and zero are at the same location
- The zero is eliminated from the configuration
What effect does a lag compensator have on the response time of a system?
What effect does a lag compensator have on the response time of a system?
Which of the following statements is true regarding the performance of a lag compensator?
Which of the following statements is true regarding the performance of a lag compensator?
Flashcards
Lag Compensator Function
Lag Compensator Function
A control device that improves steady-state system performance by adding a low-frequency pole-zero pair where the pole is closer to the origin than the zero.
Steady-State Improvement (Lag)
Steady-State Improvement (Lag)
Increases low-frequency gain, hence improves accuracy in the final outcome (steady state).
Phase Lag (Lag Compensator)
Phase Lag (Lag Compensator)
Introduces a negative phase shift, reducing system stability margins.
Transient Response (Lag)
Transient Response (Lag)
Signup and view all the flashcards
Pole-Zero Location (Lag)
Pole-Zero Location (Lag)
Signup and view all the flashcards
Study Notes
Lag Compensator
- A lag compensator enhances a system's steady-state response, typically by decreasing steady-state error.
- It achieves this by introducing a low-frequency pole-zero pair, with the pole positioned closer to the origin than the zero.
- Improves steady-state accuracy by increasing low-frequency gain.
- Introduces a phase lag, potentially reducing system stability margins.
- Reduces transient response speed, leading to increased rise and settling times.
- Pole location is closer to the origin than the zero.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.