一种M/T 混合测速法的研究与实现

针对高精度伺服控制系统中电机速度反馈信号的采集精度问题，提出一种基于误差分析的M/T混合测速法。该方法由TMS320F28335增强型正交编码脉冲模块(eQEP)和增量式光电编码器组成，通过比较已有的各种转速测量方法的不足，在不增加软硬件复杂度的前提下，利用M法和T法在恰当时刻的切换，实现较宽速度范围内的高精度测速，并给出了实际各种情况下动态测速的软件算法流程，利用实验验证了算法的准确性。实验结果表明：该方法实现了较宽速度范围内的高精度测速，实际应用中可根据具体测速条件灵活调整参数，具有很强的通用性。

Research and Implementation of M/T Mixed Velocity Measurement Method

To solve the problem of precious acquisition of feedback signal about motor speed in high precision servo system, a new method based on the error analysis -M/T mixed velocity measurement is put forward. This method consists of enhanced quadrature encoder pulse (eQEP) module in TMS320F28335 and incremental photoelectric encoder. Disadvantages of several exiting velocity measurement methods have been compared. Handover the M or T method at the right moment, we can implement precious velocity measurement in wide speed range without complicating the hardware configurations and software situations. Software algorithm procedure of dynamic velocity measure under practical situation is also provided. Experiments prove the accuracy of the proposed algorithm. The test results show that the method can be used for high precision velocity measurement in wide velocity range. Adjust parameters according to velocity measurement conditions in practical application. It has strong commonality.