公开(公告)号：US20140254058A1

公开(公告)日：2014-09-11

申请号：US14199062

申请日：2014-03-06

Applicant: DENSO CORPORATION

Inventor： Fuminori SUZUKI ,  Yuuta MIZUNO

IPC: H01H47/32

CPC classification number: H01H47/325

Abstract: A current control device sets a target current value of a solenoid, and sets a duty ratio of a PWM signal outputted to a drive circuit of a solenoid based on the target current value. The target current value is a value that periodically varies in a dither period longer than a PWM period of the PWM signal. A setting period of the target current value and a setting period of the duty ratio are shorter than the dither period. As compared with a configuration where the duty ratio is set in the dither period, a time period from a time a basic current value is changed to a time the duty ratio is renewed is shortened. A operation responsiveness of a movable core of the solenoid improves.

Abstract translation: 电流控制装置设定螺线管的目标电流值，并根据目标电流值设定输出到螺线管的驱动电路的PWM信号的占空比。 目标电流值是在比PWM信号的PWM周期长的抖动期间周期性变化的值。 目标电流值的设定期间和占空比的设定期间比抖动期间短。 与在抖动期间设定占空比的结构相比，从基本电流值变为时间到占空比更新的时间段变短。 螺线管的可动铁芯的操作响应性提高。

公开(公告)号：US20150088320A1

公开(公告)日：2015-03-26

申请号：US14491067

申请日：2014-09-19

Applicant: DENSO CORPORATION

Inventor： Yuuta MIZUNO ,  Fumihiko NAKANE ,  Fuminori SUZUKI ,  Hiromitsu NAGATA

IPC: H02M3/156 ,  G05D7/06

CPC classification number: H02M3/156 ,  H02M2003/1555

Abstract: A load drive controlling device includes a dulling controller, a dulling adjuster, and a Proportional Integral (PI) controller. The dulling adjuster sets a first electric current value for a dulling adjustment operation according to a change trend of a target electric current value in an inductive load. The dulling adjuster performs the dulling adjustment operation on the first electric current and limits a dulled value based on a guard value. The PI controller performs a PI control based on a deviation between the dulled value and an actual value of the electric current. The dulling controller sets the first electric current value and the guard value according to a change trend of the target electric current value. In such a configuration, the load drive controlling device improves an electric current response while preventing an over-accumulation of an integration value.

Abstract translation: 负载驱动控制装置包括钝化控制器，钝化调节器和比例积分（PI）控制器。 钝化调整器根据感性负载中的目标电流值的变化趋势来设定用于钝化调整操作的第一电流值。 钝化调节器对第一电流执行钝化调整操作，并基于保护值限制钝化值。 PI控制器基于钝化值与电流的实际值之间的偏差执行PI控制。 钝化控制器根据目标电流值的变化趋势来设定第一电流值和保护值。 在这种结构中，负载驱动控制装置提高电流响应，同时防止积分值过度累积。

公开(公告)号：US20140375290A1

公开(公告)日：2014-12-25

申请号：US14296751

申请日：2014-06-05

Applicant: DENSO CORPORATION

Inventor： Yuuta MIZUNO ,  Fumihiko NAKANE ,  Fuminori SUZUKI ,  Hiromitsu NAGATA

IPC: H02M3/156

CPC classification number: H02M3/156 ,  H02M2003/1555 ,  H02P23/04 ,  H02P27/085

Abstract: A load drive control device is provided, which includes a pulse generator for generating pulse signals with a duty ratio to drive an inductive load, a feedback setting section for setting the duty ratio for feedback, a detection setting section for setting the duty ratio for detection of a natural vibration frequency of the inductive load, a natural vibration frequency setting section for setting the natural vibration frequency of the inductive load based on an actual current value detected at setting the duty ratio for detection, and a selection section for selecting the feedback setting section as a duty ratio setting section at a normal time and for selecting the detection setting section as the duty ratio setting section when a condition for detecting the natural vibration frequency is satisfied.

Abstract translation: 提供了一种负载驱动控制装置，其包括用于产生具有驱动感性负载的占空比的脉冲信号的脉冲发生器，用于设置用于反馈的占空比的反馈设置部分，用于设置检测占空比的检测设定部分 感应负载的固有振动频率的固有振动频率设定部，其基于在设定检测用占空比时检​​测到的实际电流值来设定感性负载的固有振动频率;以及选择部，用于选择反馈设定 作为正常时的占空比设定部，并且当满足用于检测固有振动频率的条件时，选择检测设定部作为占空比设定部。