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Hello,
I am doing a System Identification of a plant which has an integration using Recursive least squares. This is my first step towards implementing an Adaptive control for the system. But the problem I am facing is that, the RLS algorithm (I have implemented the code for the algorithm using MATLAB) does not converge at all. I was suspecting this might be due to the integration present in the system which makes it BIBO unstable. Just for testing purposes, I removed the integration and moved the plant pole @ origin into the left-half plane (just to stabilize the system). Now RLS converges for the input/output information. So is that RLS cannot be used for identifying systems with integration? Could somebody clarify this?
I am doing a System Identification of a plant which has an integration using Recursive least squares. This is my first step towards implementing an Adaptive control for the system. But the problem I am facing is that, the RLS algorithm (I have implemented the code for the algorithm using MATLAB) does not converge at all. I was suspecting this might be due to the integration present in the system which makes it BIBO unstable. Just for testing purposes, I removed the integration and moved the plant pole @ origin into the left-half plane (just to stabilize the system). Now RLS converges for the input/output information. So is that RLS cannot be used for identifying systems with integration? Could somebody clarify this?