基于同步旋转坐标系锁相环的转台角速率测量方法研究OA
A Rotating Speed Measurement Method of Rotary Table Based on SRF-PLL
针对传统定时测角、定角测时等测速方法只能求时间段内平均速率,无法获取转台瞬时角速率的问题,研究一种基于同步旋转坐标锁相环(Synchronous Reference Frame Phase-Locked Loop,SRF-PLL)的测速方法.在分析莫尔信号自身特征的基础上,对 SRF-PLL 测速原理进行详细阐述;设计基于 FPGA 的角速率测量电路,对电路中 SRF-PLL 测速算法结构进行详细说明;搭建转台转速测量实验平台,以环形激光陀螺仪结果为测量参考值,验证 SRF-PLL 测速方法的测速效果.实验结果表明,SRF-PLL 测速方法相比传统定时测角测速方法具有更高的测速精度以及稳定性,在各个转速下能够保持测量效果一致,有效地提升了角速率测量的精度以及稳定性.
To solve the problem that traditional measurement methods of rotating speed of rotary table,such as method-M and method-T,cannot measure the real-time rotating speed,a rotating speed measurement method based on synchronous reference frame phase-locked loop(SRF-PLL)is studied.According to the characteristics of Moiré signal,the principle of rotating speed measurement method based on SRF-PLL is elaborated in detail.The FPGA-based rotating speed measurement circuit is designed,and the SRF-PLL design method in the circuit is explained.A rotary table experimental platform is established to evaluate the application effect of rotating speed measurement method based on SRF-PLL with the ring read of laser gyro as the reference value.The experimental results show that the rotating speed measurement method based on SRF-PLL has higher accuracy and stability compared with the traditional method-T and the consistency of effect of measurement can be maintained at various speeds.Therefore,the method of SRF-PLL can effectively improves the accuracy and stability of the rotating speed measurement.
崔如磊;朱维斌;黄垚;孔明;邹伟;薛梓
中国计量大学计量测试与仪器学院,浙江 杭州 310018中国计量大学计量测试与仪器学院,浙江 杭州 310018中国计量科学研究院,北京 100029中国计量大学计量测试与仪器学院,浙江 杭州 310018中国计量科学研究院,北京 100029中国计量科学研究院,北京 100029
机械制造
转台莫尔信号转速FPGA同步旋转坐标系锁相环
rotary tableMoiré signalrotating speedFPGAsynchronous reference framephase-locked loop
《传感技术学报》 2026 (8)
1714-1719,6
国家重点研发计划项目(2023YFF0615703)浙江省基础公益研究计划项目(TGC24E050001)国家自然科学基金项目(52175526)
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