Controller for oscillation center of electric vibration table with barometrial compensation control

Abstract

The invention disclose an electrodynamic vibration table vibrating centre control device with air pressure compensate control, which includes a static controller and a dynamic controller, and the invention is characterized in that the control device also includes an air pressure compensate control circuit, the circuit detects moving coil gasbag gate or air pressure in air cell through the baroceptor and outputs voltage signal which reflects air pressure value, the voltage signal is divided into two signals after the AC signal is filtered by the filter circuit: one signal goes through the voltage latch circuit, the other signal goes through the inverting circuit, two signals are superposed by the supercircuit and inputted into the static controller by a compensate control. The invention has the advantages that: the air pressure compensate control circuit is setup, which solves the conflict between the dynamic controller and the static controller, and improves systemic safety and reliability; the invention has simple structure, works reliably and has high control precision; the voltage latch circuit of the invention has simple structure and high precision.

Description

technical field [0001] The invention relates to mechanical environment test equipment, in particular to an electric vibration table vibration center controller with air pressure compensation control. Background technique [0002] The electrodynamic vibration test bench (hereinafter referred to as the vibration table) is a kind of test equipment for performing vibration simulation tests on the specimen. Through the vibration test, the seismic performance of a product can be evaluated, which provides a reasonable basis for evaluating the quality and design of the product. Therefore, electrodynamic vibration test benches are widely used in industries such as aviation, aerospace, navigation, ships, automobiles, electronics, communications, home appliances, and instrumentation. [0003] The electric vibration test bench is designed using the principle of electromagnetic vibration. Its structure is mainly composed of the table body (magnetic cylinder, magnetic cylinder head, cent...

AI Technical Summary

Problems solved by technology

If the support air bag or air chamber leaks, when the power amplifier is turned off (the dynamic controller is realized through the power amplifier, once the power amplifier is turned off, the dynamic controller will lose its function immediately), it will cause the moving coil to undershoot. It will cause serious damage to the moving coil and the test piece

At present, most domestic high-thrust shaking tables adopt airtight structures, and it is very difficult to ensure that the entire pressurized air chamber is strictly airtight. At the same time, the mass of test pieces of high-thrust shaking tables sometimes reaches thousands of kilograms, and they are generally expensive satellites, missiles, etc. , once a similar accident occurs, the consequences will be disastrous

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