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This paper focuses on the rapid regression modeling research for the design optimization of Permanent magnet synchronous linear motors (PMSLM) which are applied in the linear motion machines. Based on the Finite Element Analysis (FEA), the initial PMSLM model is built and the modeling data of optimization are obtained. Then, the machine learning regression algorithm named K-Nearest Neighbor Algorithm...
The inevitable temperature raise leads to the demagnetization of permanent magnet synchronous motor (PMSM), that is undesirable in the application of electrical vehicle. This paper presents a nonlinear demagnetization model taking into account temperature with the Wiener structure and neural network characteristics. The remanence and intrinsic coercivity are chosen as intermediate variables, thus...
This paper presents a new method for dynamical control of the linear motor which consists of Halbach permanent array. This motor is designed for micro-motion or micro-location precision instruments. Based on a novel mathematic model of the linear motor, which takes the lateral and normal force into account, an improved field-oriented control method is applied. This method enables the operation of...
In this paper, the relationship between rotor position and phase voltages of permanent magnet (PM) brushless DC motors(BLDCM) is analyzed, a novel sensorless position control method for BLDCM is proposed, which is based on adaptive wavelet neural network(WNN). In this method, a multiple inputs-single output wavelet neural network model is built according to the analysis of sensorless position and...
There are many difficulties in control of permanent magnet synchronous motor (PMSM) owing to its highly nonlinearity and multivariable characteristics. If using the conventional controller, the uncertainty factors such as the variation of motor parameter and the load disturbance will influence the control precision. To solve this problem, this paper presents an approach of adaptive speed control for...
This paper proposes a new stator section crossing method that can overcome the drawbacks of the tow-step and three-step methods used in Shanghai Maglev railway. This method has no descending of propelling force and idleness of PWM converters. The mathematic model and vector control strategy of the permanent magnetic long stator linear machine (PMLSM) are also researched in this paper. The effectiveness...
This paper proposes a new stator section crossing method that can overcome the drawbacks of the tow-step and three-step methods used in Shanghai Maglev railway. This method has no descending of propelling force and idleness of PWM converters. The mathematic model and vector control strategy of the permanent magnetic long stator linear machine (PMLSM) are also researched in this paper. The effectiveness...
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