In this paper, we propose a novel approach for constructing the first-order differentiator. It has been shown recently that an efficient Finite Impulse Response (FIR) wideband differentiator can be synthesised when applying the multirate and Frequency-Response Masking (FRM) techniques. The overall signal processing task is shared between a very loworder differentiator and an FIR half-band filte...

A method merging the features of variable structure control and neural network design is presented for speed control of a permanent magnet synchronous motor. The proposed control approach is based on a discrete-time variable structure control and a robust digital differentiator for speed estimation. Radial basis function neural networks are used to learn about uncertainties affecting the system...

Microring-based photonic fractional differentiators play an important role in the on-chip all-optical signal processing. Unfortunately, the previous works do not consider the time-reversal and the time delay characteristics of the microring-based fractional differentiator. They also do not include the effect of input pulse width on the output. In particular, it cannot explain why the microring-...

In this paper, a control strategy is proposed for robust stabilization of nonlinear perturbed plants in the presence of actuator unmodeled dynamics. The block control technique is applied to design a nonlinear SM manifold for achieving the error tracking, and High Order Sliding Mode (HOSM) algorithm is implemented to ensure finite time convergence of the state vector to the designed SM manifold...

According to the serious decoupling, uncertainty, easily disturbed and nonlinear characters of the gas mixture of butterfly valve string couplets system, an ADRC static decoupling technology and the dynamic decoupling method based on extended state observer (ESO) were proposed. In this method, coupling from other input, parameters time-varying and external disturbances are all regarded as a tot...

In Compass/INS integrated navigation systems, feedback inertial navigation solutions to baseband tracking loops may eliminate receiver dynamic effects, and effectively improve the tracking accuracy and sensitivity. In the conventional inertially-aided tracking loop, the satellite-receiver line-of-sight velocity is used directly to adjust local carrier frequency. However, if the inertial solutio...

This paper deals with the problem of nonlinear uncertainties when tracking an infrared dim small target fast maneuvers. The particle filter (PF)-based methods are mostly considered. existing improvement for PF can handle conventional maneuver, motion state which changes slowly and in most cases is assumed to be linear. However, maneuvers appear on target, PF-based method will soon suffer from d...

Aimed at the poor performance of guidance algorithms designed based on a linearized model in active defense under large leading angle deviation, both-way and one-way cooperative sliding mode smooth nonsingular terminal for missile are proposed. The relative kinematics models target, missile, attacking established. In design process, two surfaces constructed zero-effort miss distance velocity, a...

In order to improve the performance of active vibration isolation system (AVIS) with electromagnetic actuator, several problems control are studied. Position is a critical component in suspension systems, and position sensor noise can extremely affect stability system, so tracking differentiator (TD) proposed obtain effective differential signal from relative sensor. control, feedback accelerat...