Model-reference type discretized PID control for continuous plants

This paper deals with a designing problem of discrete-time and discrete-value (discretized) control systems based on a model reference structure. Robust stabilization of that type of nonlinear control systems is examined in a frequency domain. Especially, in this study, discretization of model-reference type controller is taken into consideration. The model reference feedback using a second-order continuous-value (linear) system is approximately transformed into a PID control scheme. Numerical examples for model-reference type discretized control are provided to verify the design concept.