A multi-axis synchronous measurement and control method with fully closed position loop

Abstract

The invention discloses a multi-shaft synchronous testing controlling method with a fully closed-loop position. The method comprises the steps that a controlling instruction is sent by a PC to be analyzed and processed by a moving controller and transmitted to multiple servo drivers, motors are driven to move by the drivers to control a working platform to move, grating ruler signals of each shaftare collected by a position detecting / synchronizing device, a triggering signal is generated for a displacement sensor, and the surface height data of a spare part at the current position is collected; position information of multiple grating rulers is collected synchronously by the position detecting / synchronizing device, a grating ruler feedback signal of the fastest moving shaft is taken as asynchronous reference signal, the displacement sensor is triggered to operate, and the uniformity of the height signal of the tested spare part and the position signal on the working platform is achieved through synchronization. The method has the advantages that the grating ruler is taken as the real-time position of the working platform, the displacement sensor is taken as a surface height measuring tool, the measuring accuracy is high, and a detecting device with the above function is suitable for the method.

Description

technical field [0001] The invention belongs to the technical field of synchronous measurement and control of industrial measurement and control, and more specifically relates to a multi-axis synchronous measurement and control method of position fully closed loop. Background technique [0002] For precision measurement of small parts, the part to be measured is generally placed on a moving measurement and control workbench (X / Y axis), the displacement sensor is installed vertically above the workbench (parallel to the Z axis), the part to be measured moves with the workbench, and the measurement and control platform During the movement process, the current position surface height data of the measured part is continuously collected by the displacement sensor, and then the collected measurement and control platform position data and the part surface height data are restored to the entire surface model of the measured part through 3D reconstruction. [0003] At present, in thi...

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Problems solved by technology

In this way, due to the mismatch between the height information of the part surface and the platform position information, there is a relatively large error after the 3D reconstruction of the part, which cannot meet the requirements of precision measurement

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