LMIs in Control/Click here to continue/LMIs in system and stability Theory/DC Gain of a Transfer Matrix
LMIs in Control/Click here to continue/LMIs in system and stability Theory/DC Gain of a Transfer Matrix
The continuous-time DC gain is the transfer function value at the frequency s = 0.
The System edit
Consider a square continuous time Linear Time invariant system, with the state space realization and
The Data edit
The LMI: LMI for DC Gain of a Transfer Matrix edit
The transfer matrix is given by
The DC Gain of the system is strictly less than if the following LMIs are satisfied.
OR
Conclusion edit
The DC Gain of the continuous-time LTI system, whose state space realization
is give by ( ), is
- Upon implementation we can see that the value of obtained from the LMI approach and the value of obtained from the above formula are the same
Implementation edit
A link to the Matlab code for a simple implementation of this problem in the Github repository:
External Links edit
- [1] - LMI in Control Systems Analysis, Design and Applications
- LMI Methods in Optimal and Robust Control - A course on LMIs in Control by Matthew Peet.
- LMI Properties and Applications in Systems, Stability, and Control Theory - A List of LMIs by Ryan Caverly and James Forbes.
- [2] -Mathworks reference to DC Gain