In this paper, a tracking differentiator-proportional integral and derivative (TD-PID) control scheme is proposed to the speed of surface mount permanent magnet synchronous motor (SPMSM). The TD used generate necessary transient profile for both reference output speed, which are compared with each other produce error signals that feed into PID controller. addition unit parameters, controller’s ...

A novel composite terminal guidance law with impact angle constraints is proposed for supercavitating torpedoes to intercept maneuvering warships. Based on an adaptive super-twisting algorithm and nonsingular sliding mode (NTSM), the can guarantee finite-time convergence of line-of-sight (LOS) error LOS angular rate error. The new a combination stability theory, control (SMC), tracking differen...

In this paper, an adaptive backstepping control scheme is proposed to solve the surge motion tracking problem of autonomous undersea vehicle (AUV) with system constraint. First, initial rectification reference signal constructed for subsequent implementation deferred output constraint and making input smaller smoother in early stage operation. Second, a barrier Lyapunov function adopted develop...

We propose and demonstrate a reconfigurable photonic temporal differentiator based on a dual drive Mach-Zehnder modulator (DDMZM). The differentiator can be reconfigured to different differentiation types by simply adjusting the bias voltage of DDMZM. Both simulations and experiments are carried out to verify the proposed scheme. In the experiment, a pair of polarity-reversed field differentiat...

The classical central difference approximations of the derivative of a function based on Taylor series are the same as type III maximally linear digital differentiators for low frequencies. A new ®nite difference formula is derived, which can be implemented as a fullband type IV maximally linear differentiator. The differentiator is compared with type III maximally linear and type IV equiripple...

We proposed and experimentally demonstrated an all-fiber structured wavelength-tunable second-order optical temporal differentiator based on a linearly chirped fiber Bragg grating and a digital-controlled thermal array. The central frequency of the differentiation can be reconfigured from 192.141 to 192.616 THz by a programmable circuit. In the experiment, a second-order differentiator with 3 d...