2008
EMSS 2008 Proceeding
CACSD tool for simulation and performance of multi-rate sampled-data systems
Authors: Yolanda Cerezo, Ignacio López, Alfredo Cuesta, Luis Grau
Abstract
In this work a CACSD tool named MRPIDLAB is presented. The tool is devoted to the analysis and tuning of PID controllers working on a general multirate sampled data system, where different variables are sampled at different rates. The tool allows testing different scenarios including not only time constrains in the sampling rate but also delays in every channel. Also, since a multi-rate PID (MRPID) regulator, with 3 extra degrees of freedom which are the internal action rates, is obtained a new general tuning method is implemented. Such a method is a multi-objective optimisation in which up to four performance requirements might be imposed. An illustrative example is given to show the utilization of the developed analysis tool and to demonstrate the usefulness of the proposed multirate PID control and its tune.
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