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Piezoresistive sensors for MEMS device having rejection of undesired motion
Piezoresistive sensors for MEMS device having rejection of undesired motion
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机译:用于MEMS器件的压阻传感器,可抑制不希望的运动
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摘要
Briefly, in accordance with one or more embodiments, a piezoresistive stress sensor comprises a plurality of piezoresistive elements coupled in a bridge circuit disposed on, near, or contiguous to a flexure to detect torsional flexing about an axis of the flexure. The bridge circuit has at least two nodes disposed along the axis of the flexure and at least two nodes disposed off the axis of the flexure to maximize, or nearly maximize, an output of the bridge circuit in response to the torsional flexing of the flexure. A torsional flexing component of the output signal of the bridge circuit is relatively increased with respect to a component of the output signal generated by non-torsional stress of the flexure, or a component of the output signal generated by non-torsional stress of the flexure is reduced with respect to the torsional flexing component of the output signal, or combinations thereof.
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