Speed and angular position sensing assembly

Details Speed and angular position sensing assembly Speed and angular position sensing assembly

2005-09-20

2005-09-20

Ledynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207200, C324S173000

Reexamination Certificate

active

06946832

ABSTRACT:
A sensing assembly senses angular speed and position of a device that rotates about an axis of rotation. The axis of rotation is defined with respect to a frame. The sensing assembly includes an encoder target wheel that is fixedly secured to the device. The encoder target wheel rotates about the axis of rotation with the device being measured. A first Hall effect sensor is fixedly secured to the frame at a predetermined distance from the axis of rotation. The first Hall effect sensor has a first output line and transmits a first output thereover. A second Hall effect sensor is also fixedly secured to the frame at the same predetermined distance from the axis of rotation. The second Hall effect sensor is offset from the first Hall effect sensor by ninety degrees. The second Hall effect sensor has a second output line and transmits a second output thereover. A controller is electrically connected to the first and second Hall effect sensors. The controller receives the first and second outputs. Once received, the controller calculates an angular position and a speed for said encoder target wheel and the device.

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