Foshan Jiuwuqi Technology Co., Ltd.

Foshan University

Wei Yu

Chenglin Wen

Zhipeng Wang

Rui Chen

Henghui Liang

Yan Jiang

Storage rack

Rack

Spice rack

Bottle organizer

Complicated system fault diagnosis method and system based on a multi-stage model are provided. The method includes: establishing an integer-order mathematical model, a 0.1-level fractional order mathematical model, and a 0.01-level fractional order mathematical model of a permanent magnet synchronous motor system; designing an integer-order status observer based on the integer-order mathematical model, designing a 0.1-level fractional order status observer based on the 0.1-level fractional order mathematical model, and designing a 0.01-level fractional order status observer based on the 0.01-level fractional mathematical model; corresponding residual values can be obtained by the observers and compared with corresponding threshold values to judge whether there is a fault. The system includes first through third modules. Observers with different accuracy degrees are set up and the permanent magnet synchronous motor system is diagnosed through the observers. The fault diagnosis method and system are mainly used in motor diagnosis.

Complicated system fault diagnosis method and system based on multi-stage model

Growing community of inventors

Foshan, China

Wei Yu