Design of a Data-Oriented Control System for a p-Inputs/q-Outputs (p>q) Multivariable System

Abstract

In recent years, the design scheme of data-oriented control using input/output data without system identification has attracted attention. This research is specifically conducted on PID control because PID control has a simple structure and its physical meanings are clear. On the other hand, it is by no means rare to deal with multivariable systems in industries. However, it is difficult for a multivariable system to obtain desired control performance due to mutual interference. Therefore, in this paper, the data-oriented design scheme of the PID controller for p-inputs/q-outputs (p>q) multivariable system is proposed. The control law is derived based on minimizing a GMVC (Generalized Minimum Variance Control), and the control parameters are replaced by PID parameters. The effectiveness is numerically verified through some simulation examples.