中圖分類號：TM383.2
文獻標(biāo)志碼：A
DOI: 10.16157/j.issn.0258-7998.223410
中文引用格式： 宋建國，劉小周，李子豪. 旋轉(zhuǎn)變壓器軟解碼算法分析研究[J]. 電子技術(shù)應(yīng)用，2023，49(5)：62-66.
英文引用格式： Song Jianguo，Liu Xiaozhou，Li Zihao. Research and analysis on soft decoding algorithm of resolver[J]. Application of Electronic Technique，2023，49(5)：62-66.

Research and analysis on soft decoding algorithm of resolver

Abstract： In the vector control of the permanent magnet synchronous motor, it is necessary to obtain the accurate electrical angle of the motor rotor. In industrial control, the motor position sensor often uses a resolver to obtain the motor rotor position. Decoding the resolver position usually uses a dedicated decoding chip to obtain the rotor position of the motor, but the decoding chip increases the hardware development cost. In this paper, the software algorithm design and analysis for the position decoding of the resolver is carried out. The traditional second-order angle tracker has a poor acceleration tracking effect and is optimized, and a feedforward correction device design for the second-order tracker is proposed to achieve better angle tracking effect. The software algorithm is simulated and verified by MATLAB/Simulink. The MCAL is used to configure the TC275 peripheral DSADC to decode the resolver information, and the feasibility of the scheme is verified through experiments.

Key words : resolver；soft decoding；angle tracking word；feedforward correction