Energy accumulator water supply flow control method based on pressure measurement and temperature compensation

Abstract

The invention discloses an energy accumulator water supply flow control method based on pressure measurement and temperature compensation. Flowing-out flow is obtained by measuring the outlet pressureof an energy accumulator, and by considering the influence of temperature on the energy accumulator, temperature compensation is added when a flow conversion mathematic model is set up; and accordingto the work principle of the energy accumulator, the relation of the flow to the pressure and temperature can be obtained, and therefore the flow can be obtained according to the measured pressure and temperature. Through the flow obtained through conversion and the flow expectation, the opening degree of a proportional throttle valve is adjusted according to control logic, and the flow is controlled. By means of the energy accumulator water supply flow control method, a flow sensor and matched equipment thereof are avoided, the number of parts is reduced, the weight is reduced, and reliability is improved; and the proportional throttle valve is used for replacing a fixed throttle opening, the system can adjust the opening degree of the proportional throttle valve according to pressure changes, and the area of the throttle opening is steplessly adjusted.

Description

technical field [0001] The invention provides a method for controlling the water supply flow rate of an accumulator, in particular to a method for controlling the water supply flow rate of an accumulator based on pressure measurement and temperature compensation, and belongs to the technical field of analysis and measurement control. Background technique [0002] The hydraulic system has the advantages of small size, light weight, high rigidity, fast response, large carrying capacity, and easy realization of safety protection, so it is widely used in the aerospace field. For practical hydraulic systems, air bladder accumulators are often installed in applications, and the accumulators are used for energy supply. [0003] When the hydraulic system is powered by an accumulator, in order to meet the requirements of the system, it is generally necessary to control the flow and pressure provided by the accumulator to provide a given pressure flow. A conventional method is to use...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a pressure measurement and temperature compensation based accumulator water supply flow control method to solve the problem of using a flow sensor to detect flow signals in the existing accumulator water supply flow control process, so that the system has many components and low quality. Large, using a fixed orifice and unable to steplessly adjust the size of the orifice according to pressure changes

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