一种新的基于旋转变压器的测速方法  

New Speed Determination Method Based on Resolver

作　　者：李绍文[1] 吴双[2] 

机构地区：[1]桂林电子科技大学网络中心,广西桂林541004 [2]桂林电子科技大学计算机科学与工程学院,广西桂林541004

出　　处：《电气传动》2011年第8期61-64,共4页Electric Drive

摘　　要：提出一种旋转变压器输出信号的软件解调方法,即不使用RDC(resolve to digital converter)芯片转换,而是直接将旋转变压器输出的模拟信号连接到DSP(TMS320F2812)的模拟-数字转换(ADC,analog todigital converter)模块上,通过软件算法对旋转变压器的输出信号进行采样、处理和校正;并计算出转子速度。试验证明,该方法能够准确地检测转子的转速,实现了用软件替代硬件的设想。A novel method for demodulating the output signals of the resolver through software was proposed. The analog signals which is produced by the resolver converted to the digital signals by using the ADC （analog to digital converter） module of the DSP （TMS320F2812） rather than using the RDC（resolver to digital converter）. The analog signals is sent to the ADC module, and is sampled, disposed, and compensated by the software, then the rotor-speed of the motor is calculated. The experiments demonstrate that this method can determine the rotor-speed accurately, and realizes the idea of using the software instead of the hardware.

关 键 词：软件解调 旋转变压器 转子速度 模拟-数字转换 

分 类 号：TM340[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]