A motor multi-eccentric fault simulation method and device

Abstract

The invention discloses a method and device for simulating multi-eccentricity faults of a motor. The two sides of the test motor are arranged symmetrically on both sides along the axial direction of the test motor. The feed motor drives a left and right horizontal linear stepping motor screw to move axially, the sliding groove on each side is connected with a test motor bracket that can slide forward and backward along the sliding groove, and the left and right ends of the test motor shaft pass through the test on the same side respectively. Motor bracket, the linear stepping motor screw on each side is fixedly connected to the test motor bracket on the same side; the ARM control module drives the linear stepping motor to realize static eccentricity fault, dynamic eccentricity fault, symmetrical skew eccentricity fault and compound eccentricity fault, etc. The dynamic simulation of eccentricity faults changes the degree of eccentricity faults online by controlling the moving distance of the linear stepping motor screw, and realizes the quantitative simulation of the degree of each eccentricity fault.

Description

technical field [0001] The invention relates to the technical field of motor fault diagnosis, in particular to a dynamic simulation device and method for motor multi-eccentric faults. Background technique [0002] Among all the faults of the motor, mechanical faults account for 60%, and 80% of the mechanical faults will cause the eccentricity of the motor. Therefore, it is necessary to carry out early on-line monitoring of the eccentric fault of the motor in order to take measures to improve the reliability of the motor. At present, for the simulation of bearing faults of electrical machinery, the method of applying torque vibration is generally used to simulate bearing faults. This kind of simulation of bearing faults using a purely mechanical structure is complicated to operate, and there is no documented data for motors. Simulation of gap eccentricity fault. [0003] As a common fault, rotor eccentric fault accounts for a large proportion of motor faults. Although there ...

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Problems solved by technology

At present, for the simulation of bearing faults of electrical machinery, the method of applying torque vibration is generally used to simulate bearing faults. This kind of simulation of bearing faults using a purely mechanical structure is complicated to operate, and there is no documented data for motors. Simulation of Gap Eccentric Fault

[0003] As a common fault, rotor eccentric fault accounts for a large proportion of motor faults. Although there are many methods and schemes for rotor eccentric fault diagnosis and online detection of motors, there is no effective experimental device for simulating motor eccentric faults. It makes it difficult to study the eccentric fault diagnosis of the motor, especially the research on the dynamic eccentric fault diagnosis of the motor

Since the faults of the motor are random, in order to solve the problem of fault diagnosis, it is very difficult to make the motor naturally have a certain specified fault

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