发明名称 |
Laser Sensor Apparatus and Method for Detecting Transmission Shaft Torque |
摘要 |
Presented herein is a non-contact torque sensing apparatus and method for measuring the instantaneous torque, or torsional stress/strain, transmitted through an elongated power transmission member such as a rotatable shaft. Polarized light is directed along a measurement light path in a cavity of a shaft where it intercepts a polarizing filter. The polarizing filter is operable to alter the polarization angle of the light according to torsional twisting of the shaft. A measurement device measures the change in the polarization angle of the light to obtain the shaft twist angle. Shaft torque is then calculated from the twist angle.
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申请公布号 |
US2008156972(A1) |
申请公布日期 |
2008.07.03 |
申请号 |
US20070952240 |
申请日期 |
2007.12.07 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS, INC. |
发明人 |
VAHABZADEH HAMID;CHAKARI AYOUB |
分类号 |
G01D5/34 |
主分类号 |
G01D5/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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