Electric-hydraulic servo system controller based on embedded processor

Abstract

The invention provides an electric-hydraulic servo system based on an embedded processor. The electric-hydraulic servo system based on the embedded processor comprises a first central processing unit and a second central processing unit, wherein the first central processing unit is used for collecting data of an electric-hydraulic servo actuator, and the second central processing unit is used for a control algorithm of the electric-hydraulic servo actuator and drive control over the electric-hydraulic servo actuator. The first central processing unit and the second central processing unit achieve data interaction and connection through a dynamic DPRAM. The first central processing unit is provided with a CAN bus interface and an incremental code disk interface. The second central processing unit is provided with multiple analog quantity output channels and multiple relay output functional interfaces. The electric-hydraulic servo system based on the embedded processor has the advantages that for vibration, loading and fatigue experiments based on electric-hydraulic servo control, a professional collecting and driving interface circuit is configured, and multiple servo control methods are provided; a highly flexible configuration performance is achieved; the real-time central processing unit state monitoring function is achieved, once dead halt, runaway or other faults happen to a program, emergency fault shutdown is independently completed by electric hardware, and the safety of an experiment system is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of electro-hydraulic servo system control, in particular to an electro-hydraulic servo system controller based on an embedded processor. Background technique [0002] The electro-hydraulic servo valve is an electro-hydraulic conversion element that converts continuously changing electrical input signals into hydraulic output signals, and has been widely used in hydraulic control. The electro-hydraulic servo system controller is an electronic device that converts the control signal into a power drive signal suitable for the electro-hydraulic servo valve. [0003] When conducting vibration, loading and fatigue tests based on electro-hydraulic servo control, the existing electro-hydraulic servo system controllers have the following disadvantages: the acquisition and drive interface circuits are not professional, and there are few servo control methods available. The flexibility of the configuration is poor, an...

AI Technical Summary

Problems solved by technology

[0003] When conducting vibration, loading and fatigue tests based on electro-hydraulic servo control, the existing electro-hydraulic servo system controllers have the following disadvantages: the acquisition and drive interface circuits are not professional, and there are few servo control methods available. The flexibility of the configuration is poor, and once the program "crashes" or "runs away" and other failures, the emergency failure shutdown cannot be carried out in time to ensure the safety of the test system

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