Method and device for detecting failure of electromagnetic movement mechanism

Abstract

The present invention relates to a method and a device for detecting the failure of electromagnetic movement mechanism. The method comprises the following steps: driving the electromagnetic movement mechanism by a control unit through a driving unit; sensing, adjusting and sampling the current response signal of electromagnetic movement mechanism by a current detecting unit; determining and dividing the initial fixed area, movement area and terminated fixed area of electromagnetic movement mechanism by an area determining unit; calculating the inductive reactance to the initial fixed area and terminated fixed area by an inductive reactance calculating unit; and determining the failure by a failure detecting unit according to the calculated inductive reactance. According to the invention, the effect detection, failure determination and gradual variation failure detection of movement can be executed. Not only is the potential safety hazard in the system application reduced, but also the positions of initial point and terminated point of movement can be effectively detected. The using safety and economic property are increased.

Description

【Technical field】 [0001] The invention relates to a failure detection method and device of an electromagnetic motion mechanism, in particular to a failure detection method and device of an electromagnetic motion mechanism based on the inductive reactance of a fixed point driving end. 【Background technique】 [0002] Electromagnets, relays, electromagnetic pilot valves and other components are widely used in industrial, hydraulic and other fields. Because they are key components, failures and failures caused by springs, excitation, mechanical failures, etc. will seriously affect system safety and work efficiency. Online failure detection is seldom carried out, and it is often determined by regular replacement, or judging whether the steady-state value of the driving current is normal, or adding detection links such as whether the controlled object works as expected to determine its working status. This seriously affects the safety of its use, and it is difficult to distinguish...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of poor security of the existing electromagnetic motion mechanism failure detection method, the inability to quickly locate the cause of the fault, and the economic waste caused by the replacement of some parts that can continue to be used, the present invention provides a failure detection method of the electromagnetic motion mechanism and devices

[0005] The technical solution adopted by the present invention to solve the technical problems of poor security of the failure detection method of the existing electromagnetic motion mechanism, the inability to quickly locate the cause of the fault, and the economic waste caused by the replacement of some parts that can continue to be used is to provide an electromagnetic motion mechanism A mechanism failure detection method, the electromagnetic movement mechanism failure detection method includes the following steps: the first step, the control unit drives the electromagnetic movement mechanism through the drive unit; the second step, the current detection unit transmits the current response signal of the electromagnetic movement mechanism In the third step, the area judging unit judges and divides the initial immobility area, motion area and end immobility area of ​​the electromagnetic motion mechanism; the fourth step, the inductance calculation unit determines the initial immobility area and the end immobility area Calculate the inductive reactance of the area; the fifth step, the failure detection unit conducts failure discrimination according to the calculated inductive reactance value

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