The power management unit (50) supplies a first power as a continuous power to the second sensor (34) when the power switch (11) is turned on, and supplies a second power as an intermittent power having a lower voltage than the first power to the second sensor when the power switch is turned off. And outputs rotation number information indicating the number of rotations of the motor rotation shaft on the basis of the second sensor signal. The power management unit (50) has: comparators (58a, 58b) that operate the second power as a power source and compare the second sensor signal and the reference voltage when the power switch is turned off; and counters (58c, 58d) that detect the number of turns of rotation of the motor rotating shaft by counting the output of the comparator.

    电源管理部(50)在电源开关(11)接通的情况下向第2传感器(34)提供作为连续的电力的第1电力,在电源开关断开的情况下向第2传感器提供具有比第1电力小的电压的作为间歇的电力的第2电力,并且基于第2传感器信号输出表示马达旋转轴的旋转圈数的旋转圈数信息。电源管理部(50)具有:比较器(58a、58b),其在电源开关断开的情况下将第2电力作为电源进行动作并对第2传感器信号和基准电压进行比较;以及计数器(58c、58d),其通过对比较器的输出进行计数而检测马达旋转轴的旋转圈数。


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    Title :

    Rotation angle detection device, electric power steering device, and method for controlling electric power steering device


    Additional title:

    旋转角检测装置、电动助力转向装置以及电动助力转向装置的控制方法


    Contributors:

    Publication date :

    2022-04-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein



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