Multifunctional dynamic precision test system

Abstract

A multifunctional dynamic precision test system is characterized in that a servo motor is arranged, an output shaft of a speed reducer is connected with a rolling ball screw rod by a corrugated pipe coupling, a workbench capable of axially sliding along a straight line guide rail is fixedly connected with a nut of the rolling ball screw rod, and the workbench is supported by the straight line guide rail arranged at two sides of the rolling ball screw rod. each arranged measuring mechanism includes a built-in incremental encoder in the servo motor, circular grating encoder for measuring corner of the speed reducer, and a rolling type grating line displacement sensor for measuring displacement of the workbench. A multi-path signal data acquisition card is arranged, and detection signal of each measuring mechanism is synchronously displayed on a PC machine by the multi-path signal data acquisition card. The invention is used for researching theories such as whole system dynamic error, precision loss, error decomposition and affiliation of the dynamic system, and provides means for researching dynamic precision characteristic of dynamic system and related analysis.

Description

technical field [0001] The present invention relates to a dynamic precision research test system, which is used for research on precision loss of dynamic measurement system, dynamic error modeling of the whole system, error decomposition and traceability, precision loss modeling, etc. means. Background technique [0002] In today's information age, testing technology, as the source of information technology, plays an extremely important key role in modern science and technology, and develops very rapidly. In order to meet the needs of modern science and technology, the development of dynamic measurement in testing technology is more prominent and widely used. As an important basic theory of testing technology—dynamic precision theory must also adapt to it. [0003] The classical error and precision theory that has been used for a long time in the past is based on statistical principles as theoretical knowledge, normal distribution as a typical description, and random error ...

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Problems solved by technology

This method is relatively easy to obtain the transfer function of the system, and can reflect the actual working state of the system, but it is not superior to further study the influence of each component unit in the system on the total output of the system, because it does not consider the components of the system. The impact of unit performance changes on the entire system; although the model established by the traditional analysis method has its real-time characteristics, there is uncertainty in the change over time, and the wear, aging and performance changes of each component will lead to changes in the system transfer function , and its change law is difficult to obtain with the "black box" analysis and modeling method

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