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This study proposes new proportional—integral—derivative (PID) controller auto-tuners using frequency sampling filters (FSFs) for the estimation of plant frequency response information under relay feedback control. It differs from the existing auto-tuners in the estimation of plant frequency response information and its utilisation in the frequency domain-based PID controller design. A desired closed-loop...
In this paper, the convergence accuracy of system states in discretized sliding mode control (SMC) systems is thoroughly analyzed using big O notation. It confirms that for a n-th order system, system states x1, x2, ..., xn have different convergence rates.
This paper proposes an observer based method for estimating the mechanical parameters of permanent magnet synchronous motor (PMSM) used for complex mechanical systems. A terminal sliding mode observer is designed and the equivalent control principle is utilized to estimate the mechanical parameters of a motor system. The robustness of the estimation can be guaranteed using the sliding mode control...
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