Method and system for online testing of system parameters of sinusoidal torque device

Abstract

The invention discloses a sinusoidal torque device system parameter online testing method and system, belonging to the field of measurement testing. The invention includes a driving turntable, an air bearing turntable, a measuring grating, a lifting mechanism, a standard weight, an automatic weight loading mechanism, a standard torque sensor, a calibrated torque sensor and a torque calibration system. When the present invention uses the torsion pendulum method to dynamically calibrate the torque sensor, the system is excited by giving different frequencies, and the high-precision grating is used to measure the dynamic angle, angular velocity and angular acceleration while measuring the output of the standard torque sensor. By using the process method, the online calibration of the system parameters of the standard device, such as moment of inertia, damping and elastic coefficient, can be realized. The invention can carry out on-line test on the inherent parameters of the sinusoidal torque standard device, the moment of inertia, damping and elastic coefficient, and can also realize the calibration of the torque sensor.

Description

technical field [0001] The invention relates to an online testing method and system for system parameters of a torque device, belonging to the field of measurement testing. Background technique [0002] Aeronautics, aerospace, ships, armored vehicles, marine engineering, material science, robotics and other fields use dynamic torque test systems extensively. However, the above test systems cannot perform dynamic calibration, but can only perform static calibration. The measurement error is large. [0003] At present, the measurement technology of dynamic torque is still in the preliminary research stage. There are generally two types of excitation source signals for dynamic torque: step excitation and sinusoidal excitation. Step torque excitation generally uses a force arm-mass system or a hydraulic system to impose a known torque value, and generates a negative step torque through sudden unloading. This type of device is mainly used to calibrate the time-domain characteri...

AI Technical Summary

Problems solved by technology

[0002] Aeronautics, aerospace, ships, armored vehicles, marine engineering, material science, robotics and other fields use dynamic torque test systems extensively. However, the above test systems cannot perform dynamic calibration, but can only perform static calibration. Large measurement error

[0003] At present, the measurement technology of dynamic torque is still in the preliminary research stage

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