Pietron Gregory Michael,Fujii Yuji,Brevick John Edward,Hinkle Jeffrey Martin,Leads Michael John
申请号：
US201615045405
公开号：
US2017234755(A1)
申请日:
2016.02.17
申请国别(地区):
美国
年份:
2017
代理人:
摘要：
A transmission utilizes an output torque sensor that relies upon magnetization of a section of the output shaft. The sensor produces an electrical current that varies as the torque transmitted by the shaft varies. However, the relationship between output torque and electrical current is impacted by part-to-part variability of the shaft and of the sensor. Conventional methods of compensating for this variability are hampered because the sensors and shafts are not paired until they are assembled into the transmission. A portable test may be used to characterize each shaft and each sensor. This characterization data includes average zero torque current and variability of zero torque current with respect to shaft position. A mapping is selected based on the shaft characterization and the sensor characterization and programmed into the controller.
