-
公开(公告)号：US20160215662A1
公开(公告)日：2016-07-28
申请号：US15000334
申请日：2016-01-19
Applicant: DENSO CORPORATION
Inventor： Masatake Sato , Yoshifumi Kishimoto
CPC classification number: F01L1/352 , F01L2201/00 , F01L2250/02 , F01L2820/032
Abstract: A motor control apparatus for adjusting a cam phase includes a motor control part, which controls a current supplied to a stator coil by controlling plural switching elements forming an inverter to turn on and off. The motor control part stops the current supplied to the stator coil each time a motor rotates a predetermined rotation angle interval in a power generation control mode, in which a rotation torque is generated in a direction to impede the motor rotation. The motor control part maintains the power generation control mode when a rotation signal is determined as varying in a predetermined time period. The motor control part switches over an operation mode to a normal control mode to generate a rotation torque in a direction to promote the motor rotation when the rotation signal is determined as not varying in the predetermined time period.
Abstract translation: 用于调整凸轮相位的电动机控制装置包括电动机控制部，其通过控制形成逆变器的多个开关元件来接通和断开来控制供给定子线圈的电流。 电动机控制部在每当电动机以阻碍电动机旋转的方向产生旋转转矩的发电控制模式中旋转规定的旋转角度间隔时，停止供给到定子线圈的电流。 当旋转信号被确定为在预定时间段内变化时，马达控制部分保持发电控制模式。 电动机控制部分将操作模式切换到正常控制模式，以在旋转信号被确定为在预定时间段内不变化的方向上产生促进电动机旋转的方向的旋转转矩。
-
公开(公告)号：US10344634B2
公开(公告)日：2019-07-09
申请号：US15561594
申请日：2016-04-08
Applicant: DENSO CORPORATION
Inventor： Yoshifumi Kishimoto , Masatake Sato
Abstract: A motor drive device for valve timing control of an internal combustion engine includes: a motor drive unit that controls a phase of a camshaft to drive a motor for controlling opening and closing operation of a valve; and a determination unit that determines whether a timing is to start up the motor or to normally drive the motor. The motor drive unit drives the motor with an advance angle when it is determined that the timing is to normally drive the motor by the determination unit, and the motor drive unit normally drives the motor without the advance angle when it is determined that the timing is to start up the motor.
-
公开(公告)号：US09777605B2
公开(公告)日：2017-10-03
申请号：US15000334
申请日：2016-01-19
Applicant: DENSO CORPORATION
Inventor： Masatake Sato , Yoshifumi Kishimoto
CPC classification number: F01L1/352 , F01L2201/00 , F01L2250/02 , F01L2820/032
Abstract: A motor control apparatus for adjusting a cam phase includes a motor control part, which controls a current supplied to a stator coil by controlling plural switching elements forming an inverter to turn on and off. The motor control part stops the current supplied to the stator coil each time a motor rotates a predetermined rotation angle interval in a power generation control mode, in which a rotation torque is generated in a direction to impede the motor rotation. The motor control part maintains the power generation control mode when a rotation signal is determined as varying in a predetermined time period. The motor control part switches over an operation mode to a normal control mode to generate a rotation torque in a direction to promote the motor rotation when the rotation signal is determined as not varying in the predetermined time period.
-
公开(公告)号：US09998040B2
公开(公告)日：2018-06-12
申请号：US15169907
申请日：2016-06-01
Applicant: DENSO CORPORATION
Inventor： Tatsuhiro Numata , Masatake Sato
IPC: F01L1/344 , H02P6/08 , H02P27/08 , H02P6/14 , F01L13/00 , F01L3/20 , F01L1/053 , F02D41/00 , F02D41/20
CPC classification number: H02P6/08 , F01L1/344 , F01L3/20 , F01L2001/0537 , F01L2013/103 , F01L2201/00 , F01L2250/02 , F01L2800/00 , F01L2820/032 , F01L2820/041 , F01L2820/042 , F02D2041/001 , F02D2041/2027 , H02P6/14 , H02P6/30 , H02P27/08
Abstract: A motor driver for driving a motor in a valve timing controller of an internal combustion engine, including an Electronic Driver Unit (EDU) that, upon receiving a target rotation cycle as the instructed rotation cycle, instructs a rotation controller to (i) calculate a duty value of a Pulse Width Modulation (PWM) signal for driving the motor based on an instructed rotation cycle and an actual rotation cycle and (ii) output a calculation result of the duty value to a motor drive unit, with the rotation controller outputting, to the motor drive unit, an instruction signal that rotates the motor forward along an actual rotation direction, when the calculation result takes a positive value as a duty ratio of the PWM signal, establishing an accurate motor rotation speed control together with an improved responsiveness.
-
-
-
Search Results
4
records
(took 0.014 seconds)
