Electro-hydraulic servo system fault simulation hydraulic control system

Abstract

The invention discloses a fault simulation hydraulic control system for an electro-hydraulic servo system. The fault simulation hydraulic control system comprises three parts of an oil supply loop, a fault simulation loop and a load simulation loop. The oil supply loop is used for providing a power source for the system; the fault simulation loop is used for simulating various common faults of the system; and the load simulation loop is used for providing the force load and the elastic load for the fault simulation loop. By the adoption of the fault simulation hydraulic control system for the electro-hydraulic servo system, through the match among different elements of the hydraulic control system, the various common faults of key components such as a hydraulic pump, a hydraulic cylinder, a hydraulic motor, a control valve and a pipeline, of the electro-hydraulic servo system, a variable speed working condition and the like can be simulated. The hydraulic control system is simple in structure, reliable in work, diverse in function, flexible in operation mode and high in universality.

Description

technical field [0001] The invention relates to an electro-hydraulic servo system, in particular to its fault simulation hydraulic control system. Background technique [0002] With the rapid development of modern science and technology, the electro-hydraulic servo system is playing an increasingly important role in international competition. It has been widely used in weapons and equipment, civil equipment, aerospace and other fields, and has gradually become an important part of industrial automation and weapon automation. Indispensable important aspect. Therefore, the state monitoring and fault diagnosis research on the electro-hydraulic servo system has very important practical and engineering significance. However, due to the complex faults of the electro-hydraulic servo system, reliability verification is required for the transformation of condition monitoring and fault diagnosis technology from the theoretical stage to the engineering application stage. If it is test...

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Problems solved by technology

[0003] At present, although technical personnel in the field at home and abroad have designed a variety of hydraulic control systems for the above problems, such as patents CN201859588U, CN202883520U, CN203038523U, CN203784021U, etc. disclose a variety of hydraulic systems for experiments, but they can only meet the fault simulation and control of some hydraulic components. The detection function has the problem of single function and poor versatility

In 2009, Canadian scholars Mark Karpenko and Nariman Sepehri disclosed a hydraulic fault simulation system in the paper "Hardware-in-the-loopsimulator for research on fault tolerant control of electrohydraulic actuators in a flight control application", which can simulate a variety of common faults in hydraulic systems , but it does not consider the fault simulation methods of the core components of the hydraulic system, such as hydraulic pumps, hydraulic motors, pipelines, and variable speed conditions, so it still has certain limitations.

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