Volume kalman filter-based radial magnetic bearing displacement detection method and system

• Main Authors: CHENG LIMIN, ZHANG FUCHUN, HE NAIBAO, YANG YIFEI
• Format: Patent
• Language: Chinese; English
• Published: 12.10.2016
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention relates to a volume kalman filter-based radial magnetic bearing displacement detection method and system. The radial magnetic bearing displacement detection method comprises the steps of obtaining radial displacement output signals and rotating speed signals of a rotor in an x direction and a y direction according to a continuous time system and discretizing the continuous time system to achieve extraction of displacement information of the rotor by a volume kalman filter algorithm. According to the volume kalman filter-based radial magnetic bearing displacement detection method and system, linear processing of a radial magnetic bearing which is a nonlinear model essentially is avoided; operation of a displacement-free sensor is achieved; the detection system has very high interference rejection capability; the radial magnetic bearing displacement can be accurately detected; and the radial magnetic bearing displacement can also be detected when the exact nature of the system is unknown. 本发明涉及种基于