Hydraulic cylinder test bench load simulation device and control method thereof

Abstract

The invention discloses a hydraulic cylinder test bench load simulation device and a control method thereof. The hydraulic cylinder test bench load simulation device comprises a test bench frame, a control system, a loading hydraulic cylinder and a tested hydraulic cylinder, wherein the control system comprises an industrial personal computer, a PLC (programmable logic controller), a positional system control module and a loading system control module, the industrial personal computer sends a displacement signal to the PLC to drive the tested hydraulic cylinder to run, a displacement sensor detects the displacement signal of the tested hydraulic cylinder, the displacement sensor feeds the displacement signal back to the positional system control module so as to adjust displacement of the tested hydraulic cylinder on the one hand, and sends the displacement signal to the industrial personal computer on the other hand, the industrial personal computer converts the displacement signal into a simulation resultant force signal, and sends the simulation resultant force signal to the loading system control module so as to drive the loading hydraulic cylinder to perform opposite vertex loading on the tested hydraulic cylinder, and simultaneously a pull pressure sensor detects a pull pressure signal, and feeds the pull pressure signal back to the loading system control module after comparing the pull pressure signal with the simulation resultant force signal so as to form force negative feedback control. The hydraulic cylinder test bench load simulation device and the control method thereof achieve high automation of the hydraulic cylinder test bench load simulation device, and is high in accuracy and strong in practicability.

Description

technical field [0001] The invention relates to the field of hydraulic cylinder performance testing, in particular to a hydraulic cylinder test bench load simulation device and a control method thereof. Background technique [0002] The existing hydraulic cylinder test benches are all in the factory test stage, and the accuracy is not high, the degree of automation is not high, and the degree of intelligence is low, especially there is no real high-precision test bench. The current hydraulic cylinder test bench is mainly tested by manual operation methods, the test standards are low, the test methods are inconsistent, the test data is unreal, and the efficiency is low. [0003] The Chinese patent "Hydraulic Cylinder Test Bench" (application number: 201220592421.4, application date: 2012-11-12) discloses a hydraulic pressure control system through the pressure adjustment of the electromagnetic relief valve and the remote pressure regulating valve, as well as the direction con...

AI Technical Summary

Problems solved by technology

[0002] The existing hydraulic cylinder test benches are all in the factory test stage, and the precision is not high, the degree of automation is not high, and the degree of intelligence is low, especially there is no real high-precision test bench

The current hydraulic cylinder test bench is mainly tested by manual operation, the test standard is low, the test method is not consistent, the test data is not true, the efficiency is low, and the requirements for improving product quality cannot be met, which limits the improvement of hydraulic cylinder performance.

[0003] Chinese patent "Hydraulic cylinder test bench" (application number: 201220592421.4, application date: 2012-11-12) discloses a hydraulic pressure adjustment through the electromagnetic relief valve and remote pressure regulating valve, and the direction control of the reversing valve. Cylinder test bench device, the device can realize the factory test of the hydraulic cylinder, the structure is simple and the test is convenient, but the control method is still limited to the manual control, the test process requires a lot of manpower, and there are problems in data detection and display. The problem of low precision

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