Howtosignalprocessing
- What is the dominant pole approximation?
- What is dominant pole and its effect to a control system?
- How do you find the dominant pole in Matlab?
- How can you tell from the root locus of a system is unstable?
What is the dominant pole approximation?
The dominant pole approximation is a method for approximating a (more complicated) high order system with a (simpler) system of lower order if the location of the real part of some of the system poles are sufficiently close to the origin compared to the other poles.
What is dominant pole and its effect to a control system?
Dominant pole: The pole which is near to the imaginary axis is called the Dominant pole and it should be at least two octaves less than other poles. Insignificant pole: The pole which lies in the leftmost side. The pole should. have the smallest time-constant, whereas the dominant pole has the largest time constant.
How do you find the dominant pole in Matlab?
You can find the most dominant poles by looking at the pole-zero map... or just the poles... and finding those that are closest to the imaginary axis.
How can you tell from the root locus of a system is unstable?
The root locus procedure should produce a graph of where the poles of the system are for all values of gain K. When any or all of the roots of D are in the unstable region, the system is unstable. When any of the roots are in the marginally stable region, the system is marginally stable (oscillatory).
