Aiming at problem of low precision of dynamic measurement of mechanical spindle torque in extremely harsh environments

combined with the ring-space array torque sensor principle and characteristics of output signal

a new framework of non-contact torque measuring system with high precision is proposed and designed.Signal of sensor is acquisited by microprocessor S3C2440AL and A/D converter ADS1274

and focuses on using multiple cross-correlation method to suppress system noise

measure signal phase difference and improve the torque measurement precision.The experimental results indicate that the measuring system of ring array torque sensor using multiple correlation method has higher precision

simple structure and it can work stably in harsh environments.