基于空间位置的增量式光电编码器误差检测系统

发布时间：2018-03-31 21:08

本文选题：增量式编码器　切入点：误差　出处：《红外与激光工程》2017年10期

【摘要】：增量式光电编码器输出信号的正交性和均匀性是其重要技术指标之一,对增量式光电编码器的精度检测是编码器研制和生产过程中的重要环节。传统信号质量的检测是基于时间位置进行检测的,其检测准确度受转速均匀度影响,在高速、变速转动下对增量式光电编码器的动态性能检测并不准确。提出了一种基于空间位置的信号质量检测方法,并设计了相应的检测系统。检测系统采用直流无刷电机带动高精度角脉冲发生器和被检增量式编码器同轴旋转,并采集高精度角脉冲发生器在被检增量式编码器输出信号边沿时刻的数值,进行误差计算。该检测系统极大地减小了由于转速不均匀造成的测量不准确度。运用该检测系统对输出脉冲周期数为32 400的增量式编码器进行检测,并与时间位置检测法进行对比实验。实验结果表明:该检测系统检测结果不受电机转速变化的影响,可有效地提高检测精度及检测效率,能够实现动态检测。该系统的研制为批量生产增量式光电编码器提供了极大的便捷。
[Abstract]:Incremental photoelectric encoder output signal orthogonality and uniformity is one of the most important technical indicators, the accuracy of detection of incremental photoelectric encoder is an important part of the encoder development and production process. The traditional detection signal quality is based on the detection of time position, its accuracy is affected by the uniformity of rotational speed, variable rotating at high speed under the dynamic performance test of photoelectric encoder is not accurate. A signal quality detection method based on spatial location, and design the corresponding detection system. The detection system adopts brushless DC motor driven by high precision angle pulse generator and the detected coaxial rotary incremental encoder, and acquisition of high precision angle pulse generator in numerical check the incremental encoder output signal edge time, error calculation. The detection system is greatly reduced due to uneven speed Measurement uncertainty caused by the uniform accuracy. Using the detection system to detect the incremental encoder output pulse for 32400 cycles, and compared with the experimental time position detection method. The experimental results show that the detection system detection result is not affected by the change of motor speed, can effectively improve the detection precision and efficiency can be achieved. Dynamic detection. The development of the system for the mass production of the incremental photoelectric encoder provides a great convenience.

【作者单位】：长春理工大学电子信息工程学院;中国科学院长春光学精密机械与物理研究所;中国科学院大学;
【基金】：国家自然科学基金(51605465)
【分类号】：TN762

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