To improve the sensorless control performance of electrical drive systems, a nonsingular terminal sliding mode observer (NTSMO) and adaptive are proposed to solve chattering phase delay problems. Firstly, by defining new surface, based on fast reaching law is designed estimate back electromotive force (EMF). The enhances robustness system eliminates singularity attenuates chattering. Next, obta...

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...

Abstract In view of the shortcomings traditional sliding mode control permanent magnet synchronous motor (PMSM), such as slow convergence, serious speed overshoot and outstanding chattering, an improved dual power approach law is proposed. Combined with equivalent control, a high-order rotor designed by using second-order nonsingular terminal surface, which greatly improves dynamic static perfo...