Abstract
Backlash is the inherent characteristic of gear transmission system. It is an important mean to measure and compensate backlash to improve transmission performance. When the driving gear reverses, due to the existence of backlash, the driven gear will still keep its original steering due to inertial motion until the driven gear collision with the driving gear. In this paper, based on the analysis of the tooth gap of the driving gear and the driven gear, an on-line measurement method of the meshing tooth gap combining the angular velocity of the load end with the information of the Angle position of the two axes of the master-slave gear is presented. This method uses the gyroscope at the load end (driven wheel) to monitor the sudden change of angular velocity at the moment of gear reverse impact and re contact, and the signal is used as the judgment basis for the reverse contact moment of the driving gear and driven gear. Then, the angular position data of driving gear and driven gear are fused at the time of reverse rotation and contact impact, and the backlash of the gear is calculated online. Finally, setting up an experimental platform for measuring backlash, and the proposed method is verified. The experimental results show that the proposed method can achieve accurate backlash measurement.
Highlights
Gear drive has the characteristics of low power consumption, small volume and light weight, which is widely used in electromechanical system
Its advantages are obvious in the electromechanical system, which has the characteristics of light weight, heavy load, low power consumption
Torque change and deceleration control equipment, gear is widely used in industry and aerospace
Summary
Gear drive has the characteristics of low power consumption, small volume and light weight, which is widely used in electromechanical system. Its advantages are obvious in the electromechanical system, which has the characteristics of light weight, heavy load, low power consumption. As mechanical transmission, torque change and deceleration control equipment, gear is widely used in industry and aerospace. On the inertial stabilization platform of aerial remote sensing, due to the influence of flight platform environment, it requires small volume, light weight and strong anti-interference characteristics. The meshing-teeth side clearance measured by feeler gauge is 0.25 mm, and the backlash calculated by formula [1] is 0.2274° This value is taken as the reference value to provide the evaluation reference for the following dynamic measurement results of backlash. The angle position of driving wheel and driven wheel at the time of t1 and t2 detected in real time is made difference (uz1-uz2,uc1-uc2), and brought into formula [2] to calculate the backlash accurately, and compared with the reference value measured by feeler gauge for error analysis. Compared with the two schemes mentioned in the introduction, which make use of the inertia hysteresis phenomenon to measure the backlash, the measuring principle and equipment configuration in this paper are relatively simple and the accuracy is equal This proves the feasibility of this method
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