Jie Liu
Jie Liu has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
- Chao Zhang
Beijing Institute of Automation Control Equipment, No.17 Yungang West Road, Fengtai District, Beijing 100074, China
1 shared publication - He Zhao
School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
1 shared publication - Jiao Cai
Information technology center, Beijing Jiaotong University, Beijing 100044, China
1 shared publication - Liwei Zhang
School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
1 shared publication - Lu Shen
School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
1 shared publication
Latest Publications
- Open Access
- 28 April 2020
- Published by MDPI AG in Electronics
- Vol. 9 (5) , 729
Design of a Low-Order FIR Filter for a High-Frequency Square-Wave Voltage Injection Method of the PMLSM Used in Maglev Train
In position sensorless control based on a high-frequency pulsating voltage injection method, filters are used to complete the extraction of high-frequency response signals for position observation. A finite impulse response (FIR) filter has the advantages of good stability and linear phase. However, the FIR filter designed by using traditional methods has a high order which will cause a large time delay. This paper proposes a low-order FIR filter design method for a high-frequency signal injection method in the permanent magnet linear synchronous motor. Based on the frequency characteristics of the current signal, the requirement that the FIR filter needs to meet were analyzed. According to the amplitude–frequency characteristic of the FIR filter, these requirements were converted into constraint equations. By solving these equations, the coefficient of the FIR filter could be obtained. The simulation and experiment results showed the effectiveness of this low-order FIR filter.
- 28 April 2020
- Published by MDPI AG in Electronics
- Vol. 9 (5) , 729
Open AccessDesign of a Low-Order FIR Filter for a High-Frequency Square-Wave Voltage Injection Method of the PMLSM Used in Maglev Train
In position sensorless control based on a high-frequency pulsating voltage injection method, filters are used to complete the extraction of high-frequency response signals for position observation. A finite impulse response (FIR) filter has the advantages of good stability and linear phase. However, the FIR filter designed by using traditional methods has a high order which will cause a large time delay. This paper proposes a low-order FIR filter design method for a high-frequency signal injection method in the permanent magnet linear synchronous motor. Based on the frequency characteristics of the current signal, the requirement that the FIR filter needs to meet were analyzed. According to the amplitude–frequency characteristic of the FIR filter, these requirements were converted into constraint equations. By solving these equations, the coefficient of the FIR filter could be obtained. The simulation and experiment results showed the effectiveness of this low-order FIR filter.