Generally there are two methods for the thrust ripple modeling: one is to identify the
eigenvalues and the model parameters of thrust ripple sequentially under rigorous operating …

Combining the feedback of predictive function control and the feedforward of extended state
observer, a composite control strategy is proposed for the permanent magnet linear …

Committed to the fact that the cogging torque of permanent magnet synchronous motors
(PMSMs) under low-speed operation severely aggravates the speed ripple as well as the …

This paper presents a method for compensating the force ripple in permanent magnet linear
synchronous motors (PMLSMs) by adopting a composite feedforward compensation …

In this paper, firstly a fractional order (FO) model is proposed for the speed control of a
permanent magnet linear synchronous motor (PMLSM) servo system. To identify the …

This study investigates the direct torque control strategy of permanent magnet synchronous
motor with the space vector modulation, on account of large torque fluctuation and varied …

The ripple force, which displays intricate dynamic characteristics and is fundamentally
nonlinear in linear servo systems, poses challenges in modeling and compensation. To …

The direct driven feed system incorporates the merits of simple structure, high velocity and
high acceleration, which has a bright future in the high-speed machine tools. However …

Due to their structural simplicity, linear motors are increasingly receiving attention for use in
high velocity and high precision applications. The force ripple, as a space-periodic …

In this paper, the influences of unknown disturbances are first analyzed, and the structural
properties of the disturbances are given. By appropriately applying Fourier series …