N Phase Position Encoder And Associated Signal Processing And Calibration Methods

Abstract: An n phase encoder for use in a mechatronic system, including a movable element (104, 304) that applies a magnetic field with period S representing a total displacement, and a stationary support (201, 310) with n magnetic field sensors (202a-c, 312) mounted thereon and positioned on the stationary support (201, 310) so as to measure the magnetic field imparted by the movable element (104, 304), wherein n is greater than 1, the encoder being configured to obtain signals from the n magnetic field sensors (202a-c, 312) corresponding to the measurements of the magnetic field imparted by the movable element (104, 304), and to process n signals from the n magnetic field sensors (202a-c, 312) by utilizing a transformation matrix to determine a displacement of the movable element (104, 304), as well as associated signal processing and calibration methods.

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