Difference Between Phase Lead and Phase Lag
Category |
Phase lead |
Phase Lag |
---|---|---|
Design |
Phase angle is added in proximity to the point of gain crossover |
It keeps the phase margin at the desired level while increasing the error constant. |
Result |
The enhanced phase shift is caused by an additional phase angle close to the gain crossover point. It raises the system’s gain at a higher frequency. |
The gain crossover point is shifted to the lower value. It lowers the system’s gain. Additionally, it muffles high-frequency noise. |
Advantages |
A quicker response is the result of the system’s enhanced dynamic response. It expands the bandwidth of the system. it functions as a high pass filter |
By lowering the steady state error, it enhances the system’s steady state performance. The high-frequency noise is suppressed. |
Disadvantages |
It requires an additional amplifier gain. |
It lessens the transitory reaction of the system’s seed. |
Applications |
It’s employed to quicken the transitory response. Its uses are thus limited to situations requiring a quick transient response. |
the steady state errors reduced by phase lag |
Compensators
All of the topics covered in the Control System Tutorial, including the Introduction to Control Systems, Classification, Transfer Function, Signal Flow Graphs, Mason Gain Formula, Block Diagram, State Space Model, and more, are included in our tutorial.
The compensator is an extra part that is introduced to the control system’s structure throughout its redesign. It is included in order to make up for the system’s poor performance. A compensator can be mechanical, electrical, hydraulic, or any combination of these.
Table of Content
- What is a Compensator?
- Types of Compensator
- Gain Cross over point
- Phase Lead and Phase Lag
- Examples
- Advantages of Compensator
- Disadvantage of Compensator
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