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This paper focuses on the problem of servo control for automatic adhesive crystal orientation instrument. A three-loop cascade control structure is proposed based on the vector control theory. According to the process requirements of the equipment, PI controllers are employed in a current loop and a position loop. For a speed loop, an internal model controller is designed based on the internal model...
The dual-stator permanent magnet synchronous motor (DSPMSM) features high efficiency and high torque and power density, but its special structure makes it difficult to design and there is no ready-made design software like traditional motors. In this paper, a DSPMSM control system for electric vehicles (EV) is designed, and achieves the field-circuit time-stepping finite element simulation using software...
This paper reports on the control necessary in a Bristol cylinder sea-wave energy capture device and the issues concerned with harvesting a slow, propagating sea-wave, where the power will pulsate. In the paper a detailed description is put forward for the mechanical system. The control strategies necessary to control a system that is has continuously changing conditions are outlined and simulations...
Conventional PI regular is a simple control method that is widely applied in permanent magnet synchronous motor (PMSM) control systems. However, in most cases, it cannot meet the requirements of high performance control. In order to improve system robustness and response, this paper adopts sliding mode variable structure control strategy in the design of a double-loop controller (speed loop and current...
This paper analyzes the maximum torque per ampere vector profile at steady-state and transients for different interior permanent magnet synchronous motors. A detailed analysis of torque and power versus current functions is performed at steady-state, showing that a technique based on minimization of input power versus current can be used to tune the control system, thus avoiding any torque measurement...
A robust position controller with variable structure control (VSC) and dynamic recurrent fuzzy wavelet network (DRFWN) technique for permanent magnet synchronous motor (PMSM) is presented in this paper. Based on the VSC method, the closed-loop system can system dynamics with an invariance property to uncertainties. However, the sliding controller based the assumption of known uncertainty bounds often...
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