Design And Research Of Coupling Shaft Dynamic Torque Sensor

In recent years,the failure frequency of ship power plant remains high,which seriously threatens the navigation safety,mobility and combat ability of ships.As a necessary means of power transmission system power monitoring,dynamic torque measurement can test whether the output power of power machinery can meet the standard,and monitor and alarm the operating conditions of power machinery.Domestic research on dynamic torque measurement is relatively late,and there is no mature product.With the rapid development of shipbuilding and aerospace industry,there is an urgent need for dynamic torque sensor to monitor the torque of its power system.Based on the finite element method,established the numerical simulation model of the torque sensor,the static and dynamic characteristics analysis,studied the working plane strain under different load torque sensor and the relationship between the load and torque sensor structure size effect on the working plane strain,optimize the structure of the torque sensor,designs the general structure of the torque sensor,The strain of working plane is improved.In torque,on the basis of structure design,the research of the torque sensor wireless power supply technology,magnetic coupling resonance method is proposed for torque sensor for power supply,through theoretical calculation and simulation,determine the magnetic coupling resonant mode for power supply,the feasibility of torque sensor,design of the torque sensor wireless power supply and signal transmission circuit;The experimental prototype of the torque sensor is processed and manufactured.The calibration experiment and high speed test are carried out on the prototype of the torque sensor.The technical indexes of the sensor are determined to ensure the safe and reliable operation of the torque sensor at the rated speed.The dynamic calibration experiment of Kistler9275 sensor is carried out.On the basis of the dynamic calibration experiment,the dynamic compensation theory and method of the sensor are studied.The dynamic compensation theory of torque sensor is proposed,and the improved least square method,zero-pole assignment method and particle swarm optimization algorithm are studied.The dynamic compensator of Kistler9275 torque sensor is designed by three methods.In this thesis,a coupling shaft torque sensor measuring range of 10KNm-100 KNm is designed,and its structure is optimized,improve the strain of the working plane,reduce the stress concentration,and set up a speed measurement area on the shaft,in the torque measurement at the same time can output speed signal and power signal;Based on the principle of magnetic coupling resonance,the wireless power supply and signal transmission circuit of torque sensor are designed.The experimental prototype of the torque sensor is manufactured,and all its indexes are in line with the design indexes of the torque sensor.Based on the dynamic calibration,the dynamic compensation technology of the torque sensor is studied,and the design method of the improved least square method as the dynamic compensator of the torque sensor is determined.