一种数字式旋转变压器转角位置检测方法

介绍了一种旋转变压器数字化转角位置测量的新方法，在旋转变压器定子绕组施加两相正交的ＳＰＷＭ波激磁，用滤波器滤去转子绕组输出信号的高次谐波后，测量其上位移获得绝对转角位置，文中论述了ＳＰＷＭ波形的设计，硬件构成和数据处理过程，在全数字交流伺服系统上的应用表明，该方法具有高分辨率，高性能价格比的特点。

Digital Measurement of Shaft Position with Resolver

Describes a novel method of resolver digital conversion. Two orthogonal SPWM weve. are supplied to the stator winding of the resolver. The higher order harmonics of the rotor winding signal are attenuated through a filter circuit, while the absolute shaft position is obtained by measuring the phase shifting of the filter circuit output. The design of SPWM waveform, hardware implementation and data processing are proposed. This method has been applied to a fulldigital AC servo system. The results show that it has high resolution, high performance and low cost.