基于感应同步器的高速高精度位置测量技术

High speed and accuracy position measuring method based on inductosyn

现有的基于感应同步器的鉴幅、鉴相位置测量法,由于其原理缺陷,不适合高速高精度的测量场合.为解决高速高精度位置测量问题,给出一种新型的基于感应同步器的位置测量方法———幅度细分法.感应同步器输出的感应信号是调幅信号且幅度很低,为采用幅度细分技术,需对其输出的感应信号无失真的放大.在阐述系统工作原理的基础上,给出了系统的结构,并对关键功能电路进行了实验及仿真研究.结果表明,此法从原理上克服了感应信号中动态分量对测量结果的影响,克服了现有测量法不适合高速高精度测量的缺点,具有测量精度高、时间间隔固定。

Position measurement methods by use of phase detection and amplitude detection based on inductosyns are not suitable for high speed and high accuracy position measurement for the defects of operation principle. To solve the problem of measuring position accurately at high speed, a novel position measurement method based on inductosyns was given, which makes use of amplitude fine division means. The inductosyn's output signal is an amplitude modulation signal and its amplitude is small. To use the amplitude fine division method, the inductosyns output signal should be amplified with no distortion. After showing the operation principle, a block diagram of the position measurement system was given. Experiment and simulation of function circuits was performed. The results prove that this method cancels the effect of the dynamic variables in the inducting signals out of inductosyns on position measurement, overcomes the shortage of current methods which can only measure position with low accuracy and low speed, can measure position with high accuracy, equal time interval in high speed moving conditions, etc.