Binocular vision-based synchronous operation lifting system detection system and method

Abstract

The invention relates to a binocular vision-based synchronous operation lifting system detection system and a method. The system comprises a synchronous operation lifting system, two CCD (Charge Coupled Device) cameras, bases of the CCD cameras, a plurality of artificial target points, two auxiliary light sources and a computer, the two CCD cameras are mounted over the synchronous operation lifting system, the artificial target points are respectively mounted at different positions on the synchronous operation lifting system, and the two CCD cameras can continuously acquire and transmit the images of the artificial target points to the computer. The method includes the following steps: a coordinate system is established, the two cameras respectively acquire and transmit a digital image of the artificial target points to the computer, the image information of the two cameras are integrated, the binocular vision imaging theory is utilized to calculate the three-dimensional coordinates of each artificial target point under the world coordinate system, and linear operation is then utilized to work out the synchronism and verticality error of each lifting axis of the synchronous operation lifting system. The non-contact, disturbance-less and high-frequency measurement of the synchronous operation lifting system is realized.

Description

technical field [0001] The invention relates to measurement technology, in particular to a detection device and method for a synchronous operation jacking system based on binocular vision. Background technique [0002] The three-axis air bearing system is the key equipment for the satellite ground simulation test. The synchronous operation jacking system is an important part of the three-axis air bearing system. Usually, the multi-axis synchronous operation jacking system is composed of multiple jacks, which is responsible for completing the ball. Auxiliary disassembly, positioning and protection of bearings and instrument platforms. Because the satellite test puts forward high reliability and high precision requirements for the equipment, the synchronization error and verticality error of the multi-axis synchronous operation jacking system are two of the key technical indicators. Due to the special construction of the three-axis air bearing system The synchronization and v...

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Problems solved by technology

[0007] The use of displacement sensors to detect synchronous displacement mainly has the following disadvantages: 1. It belongs to the contact measurement method, which interferes with the movement of the moving parts to be measured, which is not conducive to accurate measurement; Verticality error; 3. The displacement sensor itself has a certain nonlinear error. In the document "Sensor Error Calibration of Hydraulic Synchronous Jacking Control System" ("Measurement and Control Technology", Vol. 32, No. 1, 11-13, 2013), Lu Guofang et al. pointed out that the linearity of the displacement sensor itself has a certain error between the measured value and the real value during field use, and the displacement sensor must be calibrated online

[0008] Therefore, the above measurement method is not suitable for the measurement of the synchronous operation jacking system used by the three-axis air bearing table, and new measurement methods and devices need to be considered

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