会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明专利
    • Rotation detecting device
    • JP5281617B2
    • 2013-09-04
    • JP2010177231
    • 2010-08-06
    • トヨタ自動車株式会社株式会社デンソー
    • 真之 久田晶人 内田哲 枡田
    • G01D5/244F02D45/00
    • F02D41/009F02D41/222Y02T10/40
    • PROBLEM TO BE SOLVED: To accurately determine whether a tooth-missing section is passed even when a double signal abnormality is generated. SOLUTION: A crank position sensor 42 includes a main sensor 61 and a sub-sensor 62 for outputting pulse signals each time a tooth 52 of a signal rotor 51 passes, where the signals output by the sensors have phases deviating from each other. When such conditions that a sub-signal of the sub-sensor 62 is at a high level and that a main signal of the main sensor 61 is changed are established, the crank position sensor 42 outputs a crank signal whose pulse width is different according to a changing direction of the main signal when the conditions are established. An ECU 41 performs tooth-missing section passage determination based on a time interval between the crank signals. Also, the ECU 41 determines whether or not a double signal abnormality where two signals are output from the crank position sensor 42 each time the tooth 52 passes is generated, and changes determination configurations of the tooth-missing section passage determination according to the cases in which the double signal abnormality is determined to be present and absent, upon performing the tooth-missing passage determination. COPYRIGHT: (C)2012,JPO&INPIT