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Method and apparatus for sectional magnetic encoding of a shaft and for measuring rotational angle, rotational speed and torque
Method and apparatus for sectional magnetic encoding of a shaft and for measuring rotational angle, rotational speed and torque
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机译:用于轴的分段磁编码以及用于测量旋转角,旋转速度和转矩的方法和设备
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摘要
Magnetically encoded shafts for use in detecting forces exerted on the shaft (271) during operation. magnetically encoded regions (272) arranged in tracks (272) or bands, encircle the shaft (271) and are formed within or affixed to the shaft (271). The magnetically encoded regions (272) define force-sensitive regions (272) therebetween. Magnetic fields surround the force-sensitive regions (272) and are altered by force vectors passing through the force sensitive region (509). These magnetic fields are sensed by magnetic field sensors (352) to determine various shaft (271) parameters including, for example: shaft (271) rotational speed, shaft (271) rotational position, and forces exerted on the shaft (271), e.g., torque, bending forces, stress forces and strain forces. To provide continuous detection of shaft (271) operational parameters and forces, dead zones between magnetically encoded regions (272) are aligned with force sensitive regions (509) associated with magnetically encoded regions (272) in other bands.
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