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Nonlinear compensation for non-contact electronic joystick with a single hall sensor

Nonlinear compensation for non-contact electronic joystick with a single hall sensor

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A new non-contact electronic joystick using a single hall-sensor, which detects a horizontal vector in the magnetic field, is demonstrated. Furthermore, the nonlinear characteristics between the output of the hall-sensor and the movement of the joystick bar are compensated to be linear. The dynamic horizontal vector of the magnetic flux is detected by the hall-sensor, whereas a permanent magnet is rotated with the joystick bar, which has a two-dimensional detecting area. Using the nonlinear adjustment equations, the output signals of the hall-sensor become linear, giving higher accuracy in two-dimensional movement. Through real experiments, it is shown that the single hall-sensor structure mechanism is superior to the dual-sensor structure in sensing two-dimensional motion without offset.

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