公开(公告)号：US20200301374A1

公开(公告)日：2020-09-24

申请号：US16755907

申请日：2018-09-28

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Toshiaki NAKAMURA ,  Teppei HIROTSU ,  Tatsuya HORIGUCHI ,  Tadanobu TOBA ,  Hideyuki SAKAMOTO

IPC: G05B13/02 ,  B60W50/06

Abstract: A prediction control device controls an actuator for automatic driving of a vehicle including: a command value generation unit generating an operation amount for the actuator and an operation amount candidate as a predicted value; an output prediction unit outputting a control amount candidate as a predicted value corresponding to the actuator output by using an operation model; an evaluation function calculation unit expressing constraint conditions for the automatic driving; a situation degree detection obtaining a measure of giving priority to ride comfort or giving priority to danger avoidance of an own vehicle while traveling; and a responsiveness adjusting unit obtaining a next operation amount candidate from the situation degree from the situation degree detection unit. The operation command value generation unit generates an operation amount for the actuator, and the responsiveness adjusting unit adjusts the output of the evaluation function according to the situation degree.

公开(公告)号：US20200254947A1

公开(公告)日：2020-08-13

申请号：US16760136

申请日：2018-09-13

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Hiroshi SHINODA ,  Ming LIU ,  Hideyuki SAKAMOTO

IPC: B60R16/03 ,  H02M3/158 ,  H02M3/157 ,  B60W60/00

Abstract: The present invention reduces conducted noise of an input current in a power supply device having a plurality of channels at low cost. In a power supply circuit (210) possessed by an autonomous running control ECU, switching circuits 22 respectively generate, on the basis of control signals C, power supplies supplied to a plurality of logic circuits. A transition management unit 25 controls the switching circuits 22. A clock generation unit 26 generates a plurality of clock signals. The transition management unit 25 has a control signal generation unit and a plurality of delay units. The control signal generation unit generates intermediate control signals from the clock signals generated by the clock generation unit 26. The delay units delay the intermediate control signals on the basis of command signals and output the delayed intermediate control signals as the control signals C. The clock signals generated by the clock generation unit include at least one clock signal having a different frequency.

公开(公告)号：US20200023854A1

公开(公告)日：2020-01-23

申请号：US16488896

申请日：2018-03-15

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Tatsuya HORIGUCHI ,  Teppei HIROTSU ,  Hideyuki SAKAMOTO ,  Ryohichi INADA

IPC: B60W50/00 ,  G05D1/00 ,  B60W30/18 ,  B60W10/20 ,  B60W10/18

Abstract: An object of the present invention is to enhance the reliability of an autonomous driving system. The autonomous driving system includes: a higher-level control device 1 that outputs a control target value of an actuator group based on an action plan of a vehicle; and a lower-level control device 2 that controls the actuator group of the vehicle based on a command from the higher-level control device 1. The lower-level control device 2 holds the control target value of the vehicle provided by the higher-level control device 1 over a specific period. When the higher-level control device 1 does not satisfy a desired function, the lower-level control device 2 is configured to be controlled based on the held control target value. The action plan is followed by determining and correcting a difference between an actual action value and the control target value of the vehicle.

公开(公告)号：US20170207722A1

公开(公告)日：2017-07-20

申请号：US15325790

申请日：2015-06-29

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Shinichirou HIDA ,  Hideyuki SAKAMOTO ,  Satoru SHIGETA

IPC: H02M7/537 ,  H02M1/32 ,  H02P29/024 ,  H02M1/08

CPC classification number: H02M7/537 ,  H02M1/08 ,  H02M1/32 ,  H02M7/53871 ,  H02M2001/0009 ,  H02P27/08 ,  H02P29/027

Abstract: An object of the invention is to diagnose whether an overcurrent detecting function with respect to a power semiconductor element of a power conversion apparatus is normal. The power conversion apparatus of the invention is provided with IGBTs as the power semiconductor element which performs a switching operation to convert DC power supplied from a DC power source into AC power, an overcurrent detecting circuit, and an overcurrent simulating circuit. The IGBTs include an emitter sensing terminal which outputs a sense current according to a current flowing to an emitter electrode. The overcurrent detecting circuit detects the overcurrent flowing to the IGBTs on the basis of the sense current output from the emitter sensing terminal. The overcurrent simulating circuit outputs a simulation signal which simulates the overcurrent flowing to the IGBTs and toward the overcurrent detecting circuit.

公开(公告)号：US20160208725A1

公开(公告)日：2016-07-21

申请号：US15023560

申请日：2014-06-13

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Takao FUKUDA ,  Hideyuki SAKAMOTO ,  Masahiro TOYOHARA ,  Yoshihisa FUJII ,  Osamu MUKAIHARA ,  Mitsuhiko WATANABE ,  Takeshi KONNO

IPC: F02D41/20

CPC classification number: F02D41/20 ,  F02D2041/2013 ,  F02D2041/2048 ,  F02D2041/2051 ,  F02D2041/2058

Abstract: An internal-combustion-engine fuel injection control device which can accurately control a boosted voltage applied to a fuel injection valve during fuel injection and can control a variation in a fuel injection amount without increasing a size or a cost of the fuel injection control device even when a width of a fuel injection driving pulse to drive the fuel injection valve is small is provided. A fuel injection control device includes a boosting operation control unit configured to start a boosting operation at predetermined timing regardless of an amount of a detected voltage when the detected voltage is higher than a threshold voltage for starting boosting and is lower than a threshold voltage for stopping boosting.

Abstract translation: 一种能够精确地控制在燃料喷射期间施加到燃料喷射阀的升压电压的内燃机燃料喷射控制装置，并且能够在不增加燃料喷射控制装置的尺寸或成本的同时控制燃料喷射量的变化，甚至 当提供驱动燃料喷射阀的燃料喷射驱动脉冲的宽度小时。 一种燃料喷射控制装置，包括：升压运转控制单元，被配置为，当检测电压高于用于启动升压的阈值电压时，与预定电压的量无关地在预定定时开始升压运行，并且低于用于停止的阈值电压 提升。