Docking mechanism test system six-component force on-line calibration method

Abstract

The invention provides a docking mechanism test system six-component force on-line calibration method. In a calibration process, a standard force sensor is connected in a back-to-back mode with a six-component force sensor of a docking mechanism test system to be tested; loading is performed manually, a transmission mechanism transmits a force to the standard force sensor, and the force is applied to the six-component force sensor; and the output of the standard force sensor is used as a standard value and is compared with six-component force measured values of the docking mechanism test system to be tested, and the measurement error of each component of six-component forces of the docking mechanism test system are obtained. According to the invention, the transmission mechanism and the standard force sensor which are adapted to the six-component force measuring range of the docking mechanism test system are selected, and the calibration of the whole measuring range of the six-component forces is realized; in addition, the special metering tools matched with the test system are designed for the installation of the transmission mechanism and the standard force sensor, and by selecting different metering tools and different installation positions, the calibration of each component of the six-component forces of the docking mechanism test system is realized.

Description

technical field [0001] The invention belongs to the technical field of measurement and calibration, the online calibration technology of a multi-component force measurement system, and in particular relates to a six-component force online calibration method of a docking mechanism test system. Background technique [0002] The six-component force sensor of the space docking mechanism comprehensive test system is used to measure the interaction force and moment when the simulated elements of the docking mechanism are in contact, and transmit the measurement results to the computer system, and solve the docking process in real time according to the established spacecraft dynamics model. The relative motion of the two spacecraft is then controlled by the drive mechanism to simulate the motion of the docking process. Therefore, the accuracy of the six-component force measurement data of the comprehensive test system of the space docking mechanism will directly affect the simulati...

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Problems solved by technology

[0014] 1. The measurement range cannot be covered: Due to the limitation of the weight volume and loading method, the mass of the weight cannot be made very large. The calibration range of the existing calibration method using weight loading generally does not exceed 1,000 N, and the test The six-component force measurement range of the system is in F X direction (perpendicular to the front of the sensor) is tens of kN, at F Y and F z The direction is also several thousand newtons, so the calibration range of the existing calibration method cannot meet the calibration requirements of the six-component force measurement of the test system

[0015] 2. The measurement parameters cannot be covered: affected by the installation position and installation method of the six-component force sensor, the existing calibration method using weight loading cannot achieve the calibration of all six components of the measurement system, for example, the six-component force of the buffer test bench The sensor is installed perpendicular to the ground, and the existing calibration method cannot achieve F X , F Z calibration, it is also not possible to achieve M Z , M Y calibration

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