A New Discrete-time Form of Optimal Tracking Differentiator

A new discrete form of optimal tracking differentiator is proposed based on the discrete method of sampling control. A zero-order holder in traditional discrete system of optimal tracking differentiator is left out, and the optimal control synthesis function of the new discrete system is deduced. Compared with the traditional discrete form of optimal tracking differentiator, not only the phase delay in signal filtering is reduced, but also the optimal control synthesis function is more abbreviated.