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Addition of poles to the transfer function has the effect of pulling the root locus to the right, making the system less stable. Addition of zeros to the transfer function has the effect of pulling the root locus to the left, making the system more stable.
- What is the effect of addition of pole to a transfer function on root locus?
- What is the effect of adding a open loop pole to a system?
- What is the effect of addition of pole to the open loop transfer function bandwidth?
What is the effect of addition of pole to a transfer function on root locus?
The root locus can be shifted in 's' plane by adding the open loop poles and the open loop zeros. If we include a pole in the open loop transfer function, then some of root locus branches will move towards right half of 's' plane. Because of this, the damping ratio δ decreases.
What is the effect of adding a open loop pole to a system?
Effects of the Addition of Poles: The addition of a pole to the open-loop transfer function has the effect of pulling the root locus to the right, tending to lower the system's relative stability and to slow down the settling of the response Figure (8-1) shows examples of root loci illustrating the effects of the ...
What is the effect of addition of pole to the open loop transfer function bandwidth?
Effect of addition of poles:
The system becomes more oscillatory. As the rise time is inversely proportional to speed, so the rise time will increase. Also, because the bandwidth is inversely proportional to the rise time, so the bandwidth decreases.
