Pump-valve composite two-degree-of-freedom electro-hydraulic motion loading control method

Abstract

The invention discloses a pump-valve composite two-degree-of-freedom electro-hydraulic motion loading control method. According to the method, a pump-valve composite two-degree-of-freedom electro-hydraulic motion loading system is subjected to loading control, a speed servo subsystem and a pressure servo subsystem are subjected to independent coordination by a speed command planner to achieve two-degree-of-freedom servo control of speed and output force of a loading actuator, a speed controller controls rotating speed of a motor according to speed reference commands generated by the speed command planner, control of pressure of a chamber A and a chamber B of the loading actuator is achieved by adjusting displacement of a valve core of a loading valve, and further, the output force of the loading actuator is controlled to equal loading commands. The pump-valve composite two-degree-of-freedom electro-hydraulic motion loading control method achieves physical decoupling of steering engine motion interference, is high in loading precision and energy efficiency and is particularly applicable to high-power loading occasions.

Description

technical field [0001] The invention belongs to the field of simulation technology, and in particular relates to a pump and valve compound double-degree-of-freedom electro-hydraulic motion loading control method for semi-physical simulation experiments. Background technique [0002] During the flight process and attitude adjustment process of fighter jets, the rudder surface has to bear huge air resistance. During the development stage of the fighter steering gear system, it is necessary to carry out simulated loading experiments on the steering gear system, especially when it is necessary to load it during the action of the steering gear. The electro-hydraulic load simulator is one of the key equipment for physical simulation experiments. Its main function is to load the steering gear and simulate the real working conditions of the steering gear system under laboratory conditions, so as to evaluate the load performance and structure of the steering gear. strength and the ro...

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Problems solved by technology

[0006] The present invention aims at the problems and deficiencies in the above-mentioned electro-hydraulic load simulation technology, in order to effectively solve the problem of excess force interference caused by the steering gear movement in the semi-physical simulation experiment, improve the accuracy of the semi-physical loading simulation experiment, and solve the problems of the traditional electro-hydraulic load simulation system. To solve the technical problem of heat generation, improve the energy utilization efficiency of the loading system, and provide a pump-valve compound dual-degree-of-freedom electro-hydraulic motion loading control method with compact structure, low throttling loss, and high energy utilization efficiency

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