Design And Optimization Of Capacitive Rotary Shaft Dynamic Torque Sensor

Shafting rotation is the main form of power output of mechanical equipment,and the power device outputs torque through the transmission shaft to drive the equipment to operate normally.Torque reflects the working state and operation of the powertrain and thus evaluates the overall performance of the machine.In the power transmission system,the dynamic torque of the drive shaft is not only an important parameter for calculating the power of the power system,but also an important technical indicator for monitoring the working condition and health of the power system.It is clear that torque is closely related to the power performance and operational safety of machinery and equipment.Therefore,real-time monitoring of the torque of the drive shaft is of great importance to ensure the safe and stable operation of machinery and equipment.Dynamic torque sensing technology is the key technology to achieve this goal.In practice,it is a challenge to measure the torque of rotating shafts in real time in complex environments.The more complex the environment in which the rotating shaft operates,the more demanding the sensor performance requirements.The paper begins with a brief description of the current state of research on torque measurement methods and capacitive sensing technology,combines the existing torque measurement technology and capacitive sensing technology in the laboratory,further optimises the sensor design on the basis of the original,and analyses the characteristics of the capacitive sensor and the factors affecting the sensor performance in depth based on the previous work.Combined with the actual application environment of torque measurement,the main factors are studied and the design method is proposed.A simulation bench is built and experiments are conducted to verify the effectiveness of torque measurement using the optimised capacitive torque sensor.