Motor parameter online identification method

Abstract

The invention belongs to the technical field of motor control, and particularly relates to a motor parameter online identification method; according to the method, an acquisition device arranged on amonitoring motor is included; the acquisition device comprises an acquisition unit used for acquiring signal parameters of the motor, a storage unit used for storing the collected signals, and a comparison unit used for comparing the collected signals; the interference parameters of the highest value and the lowest value are removed, and the average value is taken to be compared the real-time dynamic standard parameters of the motor, so that parameter state of the motor at the moment can be recognized, the result is closer to an expected value, and the influence on the parameter result of themotor is reduced; and in addition, a rotation speed acquisition module and a temperature acquisition module which are used for acquiring the rotor rotation speed of the motor and the temperature of the motor respectively are further provided, so that the operation condition of the motor can be assisted and judged, and whether the motor breaks down and is affected by the outside or not is judged, and the data collected under the affected state can be screened so as to ensure that the received data result is more accurate.

Description

technical field [0001] The invention belongs to the technical field of motor control, and in particular relates to an online identification method of motor parameters. Background technique [0002] With the development of power electronics technology, motor control technology and rare earth permanent magnet materials, the motor AC servo system has been widely used in aerospace, numerical control technology, robotics, textile industry and other fields. The mechanical parameters of the motor include the rotation of the motor body Inertia, load moment of inertia, motor viscous friction coefficient at the speed of identification and load torque and other four parameters, in general, the application occasion of AC servo system is the movement of load moment of inertia, load torque and motor speed time-varying In control occasions, if the moment of inertia of the servo motor and its load or the load torque changes in a large range, it will have a significant impact on the accuracy...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the online identification methods for motor parameters are sampled data obtained through online tests, which have limitations, so they often cannot reflect the influence of all parameters on the output well.

When used in the field, there are still some external factors involved. These factors lead to the inability of all generator parameters to be well identified in the actual online identification process, resulting in wrong results or unsolvable parameter identification problems.

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