Active magnetic bearing compensation based on external information

Abstract

A system includes a rotating machine, a controller, and a sensor residing apart from the rotating machine. The rotating machine includes a stator, a rotor received in the stator, and a bearing actuator that includes a magnet and an electromagnet. The magnet is configured to generate a constant magnetic flux which induces a constant force on the rotor to position the rotor relative to the stator. The electromagnet is configured to generate a control magnetic flux which induces a variable force on the rotor to position the rotor relative to the stator. The sensor is configured to detect an operating condition external to the rotating machine. The controller, which is coupled to the sensor and the electromagnet, is configured to regulate the variable force applied by the electromagnet based on the external operating condition. The variable force is regulated by changing an electric current that flows through the electromagnet.

Dependencies are inferred from the claim text.