SYSTEM AND METHOD FOR RESOLVING THE ANGULAR POSITION OF A ROTOR

摘要

A system and method for resolving the angular position of a rotor evaluates the real size of the stripes or gears on the rotor by an auxiliary device, such as a sensor shift device in a first embodiment or a camera in a second embodiment, at a fixed rotor, thus eliminating systematic errors and influence of rotor vibration during this calibration. By knowing the actual size or angular increment or produced sensor signal of each repeating element, a compensation of the error can be made and accuracy can be dramatically increased.

主权项

1. A system for resolving the angular position of a rotor, the system comprising:
a rotor having a circumference, the circumference having a repeating pattern thereon, wherein the repeating pattern has multiple repeating segments; a contactless sensor directed to the pattern during rotation of the rotor; a measuring device configured for measuring and recording, in a fixed rotor state, one or more of:
an angular period of every segment of the repeating pattern;a width of every segment of the repeating pattern; andan output signal of the contactless sensor signal by moving along every segment of the repeating pattern.