Control for an electromagnetic holding brake

    公开(公告)号:US12021473B2

    公开(公告)日:2024-06-25

    申请号:US17365446

    申请日:2021-07-01

    CPC分类号: H02P3/06 H02M3/04

    摘要: A control for an electromagnetic holding brake with a coil for releasing the holding brake and maintaining it in the released position, which requires a minimum brake coil voltage to maintain it in the re-leased position, having a DC-DC converter with an input and an output, the DC-DC converter being designed to convert a variable input voltage pre-sent at the input into a predetermined switch-on voltage provided at the output and a predetermined holding voltage provided at the output, the holding voltage corresponding to the minimum brake coil voltage, the DC-DC converter being designed to implement a 2-stage voltage control and, in a first stage, to maintain the switch-on voltage as a regulated DC voltage for a predetermined time, to downregulate the voltage from the switch-on voltage following a predetermined voltage curve to the holding voltage as regulated DC voltage, and to maintain it in a second stage.

    Actuator control device
    3.
    发明授权

    公开(公告)号:US11982717B2

    公开(公告)日:2024-05-14

    申请号:US17841197

    申请日:2022-06-15

    申请人: DENSO CORPORATION

    发明人: Sana Miyagawa

    摘要: An actuator control device configured to control an operation of an actuator includes: a detection unit and a restriction unit. The detection unit is configured to monitor a battery voltage and to detect a descent time which is a drop time of the battery voltage from a preset first voltage to a second voltage lower than the first voltage. The restriction unit imposes, when the descent time is equal to or longer than a time threshold, a stronger restriction on an operation of the actuator than an occasion of when the descent time is less than the time threshold.

    Safe-Torque-Off (STO) circuit and frequency converter including the same

    公开(公告)号:US11831258B2

    公开(公告)日:2023-11-28

    申请号:US17377619

    申请日:2021-07-16

    发明人: Xiaoran Xu Liang Xiao

    CPC分类号: H02P27/04 H02H7/0833 H02P3/06

    摘要: A circuit with a Safe-Torque-Off (STO) functionality and a frequency converter including the same are provided. According to embodiments, the circuit may include a first STO channel configured to control on/off of power supply to a high-side driver of a frequency converter based on a first STO signal, a second STO channel configured to control on/off of power supply to a low-side driver of the frequency converter based on a second STO signal, and a third STO channel configured to control supply of a drive control signal from a controller of the frequency converter to the high-side driver and the low-side driver based on a result of a logical operation of the first STO signal and the second STO signal, wherein the logical operation is configured to make the result active in response to at least one of the first and second STO signals being active.

    SHIFT RANGE CONTROL DEVICE
    7.
    发明申请

    公开(公告)号:US20190195357A1

    公开(公告)日:2019-06-27

    申请号:US16292630

    申请日:2019-03-05

    申请人: DENSO CORPORATION

    发明人: Shigeru KAMIO

    摘要: A shift range switching control device for switching a shift range by controlling driving of a motor includes a feedback control section, a stationary phase energization control section, and a switching control section. The feedback control section performs a feedback control based on an actual angle of the motor, and a motor speed. The stationary phase energization control section performs a stationary phase energization control which energizes a stationary phase selected according to the actual angle. The switching control section switches the control state of the motor.

    Braking control device for vehicle

    公开(公告)号:US09975531B2

    公开(公告)日:2018-05-22

    申请号:US15422078

    申请日:2017-02-01

    申请人: ADVICS CO., LTD.

    摘要: A vehicle brake control device includes an electric motor controlled based on a target energization amount calculated based on an operation amount (Bpa) of a braking operation member. Based on the operation amount (Bpa), it is determined whether or not an inertia compensation control for compensating for the influence of the inertia of a brake actuator is necessary. When the inertia compensation control is determined to be necessary, an inertia compensation energization amount for compensating for the influence of the inertia of the brake actuator is calculated based on a time-series pattern set in advance based on the maximum response of the brake actuator. Based on the inertia compensation energization amount, the target energization amount is calculated. The vehicle brake control device is thus able to generate a braking torque that appropriately compensates for the influence of the inertia of the entire device including the inertia of the electric motor.