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In this paper, linear elevator driven by permanent magnet synchronous linear motor (PMLSM) is used in fuzzy PID control method, in which it is to adopt the magnetic guidance system to control the PMLSM gap which changed frequently, and it can impact the vertical thrust and control the level vibration and noise in the process of start, operation, and stop to make passenger comfortable. Matlab modeling...
The magnetic levitation device which has non-contact characteristics, is used to replace the traditional guiding equipment, it would be applied in linear elevator to maintain a constant air gap of linear motor, and to eliminate mechanical vibration. In order to solve nonlinear problems of maglev device, feedback linearization control and fuzzy sliding mode control method is adopted to control the...
High-precision operation in gantry systems is required to meet higher demands on synchronization positioning accuracy. In this paper, a synchronous control scheme for gantry moving type milling machining centers using dual linear servomotors is presented. To guarantee the requirement for high accuracy in synchronous tracking, the same position feedback controller is used to single linear motor position...
The method of solving the time-delayed parameter difficult choice in controlling chaos was proposed in this paper. The fuzzy control method was applied into chaotic control by time-delayed feedback. The quadrature-axis stator voltage was used as the manipulated variable. The input of the fuzzy controller was the system error. Fuzzy controller searched the optimum time parameter according to the error...
This paper presents a new position tracking control strategy that meets the position tracking performance and the closed loop robustness to external disturbance and model parameters variations without parameter identification. In order to achieve the desired input-output tracking and disturbance rejection performance independently, a two-degree-of-freedom (2DOF) internal model control (IMC) is introduced...
This paper introduces the position synchronized control strategy that meets position tracking performance and the closed loop robustness to external disturbance in dual linear motors servo system. In order to achieve the desired dynamic synchronized performance for dual position servo axes in machining, the same position feedback controller is used to single linear motor position servo axis independently,...
This paper presents a position synchronized controller for dual linear motors servo system in gantry moving type milling machining centers. To guarantee the requirement for high accuracy in synchronous tracking, the same position feedback controller is used to single linear motor position servo axis independently. The acceleration feedforward control and electrical cross-coupled control algorithms...
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