基于FPGA的高速扭矩测量系统研究

Research on high-speed torque measurement system based on FPGA

针对高速转动的传动转轴平台扭矩精确检测困难的问题,提出了一种适用于高速工况下的扭转形变式扭矩测量系统。该系统由霍尔传感器、可编程逻辑门阵列(Field Programmable Gate Array,FPGA)及上位机3部分组成。该扭矩测量系统属于相位差式扭矩测量仪的一种,在获取转轴的形变信号后,利用FPGA作为处理芯片,可做到精确高效的信息处理,并设计了基于PYQT5的交互界面显示最终的扭矩测量结果,在高速转动的工况下,能够实施、精准地读取当前转速下施加在转轴上的扭矩信息。实验结果表明,提出的扭矩测量系统对传动转轴扭矩的测量精度误差控制在1%内,满足实际工程测量的需求。

In response to the issue of accurately detecting torque on transmission shaft platforms rotating at high speeds,a torsional deformation-based torque measurement system designed for high-speed operational environments was introduced.The system comprises three main components:Hall sensors,Field Programmable Gate Array(FPGA),and an upper computer.Belonging to the phase difference torque measurement instrument category,this torque measurement system acquires deformation signals from the shaft and utilizes the FPGA as a processing chip to achieve accurate and efficient information processing.Additionally,an interactive interface based on PYQT5 was designed to display the final torque measurement results.Under high-speed rotating conditions,this system could effectively and precisely read the torque applied to the shaft at the current speed.Experimental results demonstrated that the proposed torque measurement system maintained a measurement accuracy error of within 1%for transmitted shaft torque,meeting the requirements of practical engineering measurements.