Applications of One Approach to Identification of Continuous-Time Systems in Self-Tuning Control

M. Kubalčík and V. Bobál (Czech Republic)


System identification, differential filters, self – tuning control, recursive least squares method, polynomial methods


One approach to a recursive identification of continuous – time systems is described in this paper. Since derivatives of input and output variables of continuous – time systems can not be directly determined, differential filters and filtered variables are established to substitute primary variables. The filtered variables are then used in a recursive identification procedure, where the classical recursive least squares method is used to identify the system. The approach was applied to adaptive control using self – tuning controllers. Application to self – tuning control of a continuous – time two – input/two – output system is presented as a simulation example.

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