A Calibration System of Servo Equivalent

Abstract

The invention relates to a calibration system of a servo equivalent device. The system comprises a bus measurement and control host, a signal adaptive box, and an ultra-low frequency signal generator;the bus measurement and control host comprises a bus controller module, a digital multimeter module, an oscilloscope module and a data communication module; the bus controller module is connected with input ends of the signal adaptive box and the ultra-low frequency signal generator through the data communication module; an output end of the ultra-low frequency signal generator is connected withthe input end of the signal adaptive box, the digital multimeter module and the oscilloscope module are connected with the input end of the signal adaptive box, and the output end of the signal adaptive box is connected with a telemetering interface and a control interface of the servo equivalent device. The calibration system of the servo equivalent device provided by the invention constructs a novel ultra-low frequency response analyzer, realizes the automatic calibration of the servo unit equivalent device, and simplifies the calibration operation, thereby avoiding the importing of the artificial error.

Description

technical field [0001] The invention relates to the technical field of measurement of special test equipment, in particular to a calibration system of a servo equivalent. Background technique [0002] Servo unit tester, as an important stand-alone machine for verifying the basic performance of servo mechanisms, plays an important role in the scientific research and production of servo mechanisms. Since the working mode of the servo unit tester closely corresponds to the servo mechanism, the traceability of its value needs to be realized by the servo equivalent device. The servo equivalent adopts the same interface form as the servo mechanism, and is divided into two types: the actuator equivalent (simulating the internal resistance and frequency characteristics of the equivalent) and the mechanism energy equivalent (simulating the energy internal resistance of the mechanism). The magnitude accuracy and reliability of the equivalent device directly affect the performance of ...

AI Technical Summary

Problems solved by technology

Since the interface of the handheld digital meter is an aviation plug, measuring the internal resistance of the servo equivalent device corresponding to multiple groups of pins is extremely error-prone, cumbersome to operate, and easily introduces errors

The frequency response analyzer is used to calibrate the equivalent device of the frequency characteristics of the actuator. The frequency characteristics of the actuator are mainly concentrated in the ultra-low frequency band below 20Hz, and the general-purpose frequency response analyzer is relatively low in the ultra-low frequency band. less, it is difficult to truly reflect the frequency characteristics of the actuator

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