In high-end testing and manufacturing equipment, a trend exists whereby the traditional servo feed system with ball screw rotary motor will gradually be replaced by direct drive system. The precision motion driven permanent magnet linear synchronous (PMLSM) offers several advantages, including high speed, acceleration, positioning accuracy. However, operating of device affected PMLSM robustness...

Abstract Retraction: [Jun Mao, Jun Ma, Research on wavelet neural network PID control of maglev linear synchronous motor, IET Circuits, Devices & Systems 2022 ( https://doi.org/10.1049/cds2.12136 )]. The above article from , published online 8 December in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the Editor‐in‐Chief, Harry E. Ruda, Institution En...

This article presents a fuzzy robust Mixed - Sensitivity Gain - Scheduled H controller based on the Loop -Shaping methodology for a class of MIMO uncertain nonlinear Time - Varying systems. In order to design this controller, the nonlinear parameter - dependent plant is first modeled as a set of linear subsystems by Takagi and Sugeno’s (T - S) fuzzy approach. Both Loop - Shaping methodology and...