Design and Analysis of Finite Time Hyperbolic Sine Tracking Differentiator

In the high precision photoelectric servo stabilized platform, the extraction of differential signals is essential. In allusion to the problem that the design parameters of tracking differentiator are difficult to be selected and sensitive to noise, a finite-time tracking differentiator is designed, which could input the arbitrary order derivative and effectively suppress the noise. Simulation results show that the finite-time hyperbolic sine tracking differentiator (FSTD) designed in this paper has advantages in the derivative estimation accuracy and noise suppression of input signals. It is applied to simulation platform and verified.