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公开(公告)号：US11828383B2
公开(公告)日：2023-11-28
申请号：US17051249
申请日：2019-05-16
Applicant: YUKEN KOGYO CO., LTD.
Inventor： Taku Nagano
CPC classification number: F16K37/0041 , F16K31/0613 , G01B7/003 , H01F7/064 , H01F2007/1888
Abstract: An electromagnetic switching-valve position detection system includes: an electric current control circuit in which an electric current from a power supply is smoothed to be a direct current, and is turned into a pulse wave alternating current, the pulse wave alternating current being transmitted to the secondary side and outputted as a smoothed direct current; a carrier wave generator configured to superimpose a high frequency carrier wave for position detection on a signal wave of the electric current command; and a detecting unit configured to extract a carrier wave frequency component for the position detection from a voltage feedback signal of the solenoid, detect a voltage amplitude from the frequency component, and obtain an amplitude signal. The control unit has a position determining unit configured to determine a position of the valve spool, and a determination circuit configured to output a valve position signal based on the determination signal.
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公开(公告)号：US09911561B2
公开(公告)日：2018-03-06
申请号：US14941077
申请日：2015-11-13
Inventor： Kevin Gerard Cordle , John Behm
CPC classification number: H01H47/32 , F02D41/20 , H01F7/1844 , H01F2007/1888 , H01H47/002 , H01H47/223 , H01H47/325 , H02H3/087
Abstract: A DC solenoid coil current controller includes a rectifier, pulse width modulator, and power driver. The rectifier inputs an alternating current signal and a direct current signal, and outputs a rectified signal using at least one of the alternating current signal and the direct current signal. The pulse width modulator outputs a pulse width modulated signal in response to the rectified signal. The power driver controls a DC solenoid coil using the pulse width modulated signal, thereby enabling a direct current DC solenoid coil to be controlled in response to the alternating current signal. A method of controlling current to a DC solenoid coil is also disclosed.
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公开(公告)号：US20170222428A1
公开(公告)日：2017-08-03
申请号：US15412002
申请日：2017-01-21
Applicant: LSIS CO., LTD.
Inventor： Jaehyuk CHOI
CPC classification number: H02H7/222 , F02D41/20 , F02D2041/2027 , F02D2041/2044 , F02D2041/2065 , H01F7/1844 , H01F2007/1866 , H01F2007/1888 , H01H47/002 , H01H47/325 , H01H2047/025
Abstract: The magnetic coil driving circuit of the magnetic contactor according to the present invention comprises a semiconductor switch configured to open or close a circuit for magnetizing or demagnetizing a magnetic coil; a pulse width modulation unit configured to output a pulse signal as a control signal for turning on or off the semiconductor switch; a control unit configured to output a control signal for changing a pulse width of the pulse signal to the pulse width modulation unit; and a temperature detection and protection unit configured to detect a temperature inside the magnetic contactor, output an output signal for turning off the semiconductor switch when the temperature exceeds an allowable temperature, and control the semiconductor switch by the pulse signal from the pulse width modulation unit when the temperature is within the allowable temperature.
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公开(公告)号：US09653200B2
公开(公告)日：2017-05-16
申请号：US14684481
申请日：2015-04-13
Applicant: DENSO CORPORATION
Inventor： Atsushi Ito , Toshio Nishimura , Takeshi Akiyoshi
CPC classification number: H01F7/1844 , F01L9/04 , F02D41/20 , F02D2041/2058 , H01F7/1805 , H01F2007/1888
Abstract: An electromagnetic-valve controller includes a control switch, a control portion regulating a supply current supplied to the electromagnetic valve by controlling a drive of the control switch and controlling to open or close the electromagnetic valve, and a current detection portion detecting the supply current. The control portion controls the drive of the control switch based on a detection result of the current detection portion. The control portion controls the drive of the control switch by using a first pulse signal having a duty ratio that is variable, in a closed period. The control portion controls the drive of the control switch by using a second pulse signal maintaining the supply current to be constant so as to maintain the electromagnetic valve to be in the fully closed state, in a closed-state maintaining period.
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公开(公告)号：US20160307683A1
公开(公告)日：2016-10-20
申请号：US15098522
申请日：2016-04-14
Applicant: Hanchett Entry Systems, Inc.
Inventor： Brett L. Davis , Randall Shaffer
CPC classification number: E05B47/02 , H01F7/1805 , H01F2007/1888
Abstract: A constant-current controller that supplies a constant current to an inductive load. This controller comprises an electric control circuit module. The electric control circuit module comprises a primary switch and a secondary switch. During a time interval in which the primary switch is closed (ton), the secondary switch is open and the voltage across the inductive load is equal to the source voltage (Vs). At time ton until the end of a time interval (T), zero volts appears across the inductive load. During this interval, current continues to flow as supplied by the energy stored in the inductance. The periodic current in the inductive load becomes constant with a sufficiently large PWM switching frequency and is dependent upon the parameters of the control circuit and the duration of ton.
Abstract translation: 一个恒定电流控制器，向感性负载提供恒定电流。 该控制器包括电控电路模块。 电气控制电路模块包括主开关和次开关。 在初级开关闭合（ton）的时间间隔内，二次开关断开，感应负载两端的电压等于源电压（Vs）。 在时间吨直到时间间隔（T）结束时，电感负载上出现零伏特。 在此间隔期间，电流由存储在电感中的能量提供而继续流动。 电感负载中的周期性电流变得恒定，具有足够大的PWM开关频率，并且取决于控制电路的参数和ton的持续时间。
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Patent Agency Ranking
公开(公告)号：US09146567B2
公开(公告)日：2015-09-29
申请号：US13985627
申请日：2012-02-21
Applicant: Teppei Hirotsu , Nobuyasu Kanekawa , Ryosuke Ishida
Inventor： Teppei Hirotsu , Nobuyasu Kanekawa , Ryosuke Ishida
CPC classification number: G05F1/10 , H01F2007/1888 , H02M1/32 , H02M7/53803 , H02P29/0241 , H02P29/0243 , H02P29/032
Abstract: A current control device capable of performing widely applicable failure detection without a motor rotation speed sensor is provided. A current control semiconductor element includes, on a same semiconductor chip, a transistor that drives load, a current detection circuit that detects current of the load, a compensator that calculates an on-duty of the transistor from a current command value and a current value output from the current detection circuit, and a PWM timer that generates a pulse turning on the transistor on the basis of the on-duty. A microcontroller sends the current command value to the current control semiconductor element, receives the current value output from the current detection circuit and the on-duty output from the compensator from the current control semiconductor element, and detects failure of the current control semiconductor element on the basis of the received current value and on-duty.
Abstract translation: 提供一种能够在没有马达转速传感器的情况下执行广泛应用的故障检测的电流控制装置。 电流控制半导体元件在相同的半导体芯片上包括驱动负载的晶体管，检测负载电流的电流检测电路，从电流指令值和电流值计算晶体管的占空比的补偿器 来自电流检测电路的输出;以及PWM定时器，其基于占空比产生导通晶体管的脉冲。 微控制器将电流指令值发送到电流控制半导体元件，从电流控制半导体元件接收从电流检测电路输出的电流值和来自补偿器的占空比输出，并检测电流控制半导体元件的故障 所接受的现值和值班的依据。
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公开(公告)号：US08723456B2
公开(公告)日：2014-05-13
申请号：US13009349
申请日：2011-01-19
Applicant: Uwe Daemmrich , Guido Kalbas
Inventor： Uwe Daemmrich , Guido Kalbas
IPC: H02K41/00
CPC classification number: F02D41/20 , F01N3/208 , F01N2610/02 , F01N2610/146 , F02D41/266 , F02D2041/2027 , F02D2041/2051 , H01F7/1805 , H01F2007/1888 , Y02A50/2325 , Y02T10/24
Abstract: A procedure for controlling actuators within an on-board power system, which provides different operating voltages and temporal on-board power voltage changes. The actuator or actuators are controlled with different pulse-width modulated control signals, whereby the pulse-width and the cycle duration of the control signals can be adjusted independent of each other and are adjusted independent of the actually applied on-board power voltage. Control signals for the actuators can be specified by a control unit. The actuator or actuators can be controlled with the aid of the control unit by different pulse-width modulated control signals, whereby the pulse-width and the cycle duration of the control signals can be adjusted independent of each other; and the control unit provides devices for detecting the actually applied on-board power voltage and driver units.
Abstract translation: 用于控制车载电力系统内的致动器的程序，其提供不同的工作电压和时间板载电源电压变化。 致动器或致动器由不同的脉冲宽度调制控制信号控制，由此控制信号的脉冲宽度和循环持续时间可以彼此独立地进行调整，并且独立于实际施加的板上电源电压进行调整。 执行器的控制信号可由控制单元指定。 通过不同的脉冲宽度调制控制信号可以通过控制单元控制致动器或致动器，从而可以独立于彼此调节控制信号的脉冲宽度和循环持续时间; 并且控制单元提供用于检测实际应用的车载电源电压和驱动单元的装置。
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8.发明授权Method and pulse-width-modulated current control circuit for driving inductive loads in motor vehicles 有权用于驱动机动车辆感应负载的方法和脉宽调制电流控制电路公开(公告)号：US08704508B2
公开(公告)日：2014-04-22
申请号：US12300488
申请日：2007-05-11
Applicant: Wolfgang Fey , Micha Heinz , Wolfgang Joeckel , Peter Oehler , Axel Schmitz , Frank Michel
Inventor： Wolfgang Fey , Micha Heinz , Wolfgang Joeckel , Peter Oehler , Axel Schmitz , Frank Michel
IPC: G01R1/14
CPC classification number: B60T8/36 , B60T2270/411 , G01R19/0092 , H01F7/1811 , H01F2007/1866 , H01F2007/1888 , H02M2001/0009 , H02M2003/1555
Abstract: Method in which the current is measured inside an integrated PWM control circuit using at least one A/D converter which is likewise integrated in the circuit is described. The PWM controller is provided for the purpose of driving inductive loads and is arranged, in particular, in an electronic circuit of an electronic controller for a motor vehicle braking system. Before determining the actual current of the PWM controller, which is determined using the at least one A/D converter, the current is smoothed using a low-pass filter. A circuit arrangement for carrying out the above method and its use in electronic motor vehicle control systems is also described herein.
Abstract translation: 描述了使用同样集成在电路中的至少一个A / D转换器在集成PWM控制电路内测量电流的方法。 PWM控制器被提供用于驱动感性负载，并且特别地布置在用于机动车辆制动系统的电子控制器的电子电路中。 在确定使用至少一个A / D转换器确定的PWM控制器的实际电流之前，使用低通滤波器平滑电流。 这里还描述了用于执行上述方法的电路装置及其在电子机动车辆控制系统中的应用。
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公开(公告)号：US20130320948A1
公开(公告)日：2013-12-05
申请号：US13985627
申请日：2012-02-21
Applicant: Teppei Hirotsu , Nobuyasu Kanekawa , Ryosuke Ishida
Inventor： Teppei Hirotsu , Nobuyasu Kanekawa , Ryosuke Ishida
IPC: G05F1/10
CPC classification number: G05F1/10 , H01F2007/1888 , H02M1/32 , H02M7/53803 , H02P29/0241 , H02P29/0243 , H02P29/032
Abstract: A current control device capable of performing widely applicable failure detection without a motor rotation speed sensor is provided. A current control semiconductor element includes, on a same semiconductor chip, a transistor that drives load, a current detection circuit that detects current of the load, a compensator that calculates an on-duty of the transistor from a current command value and a current value output from the current detection circuit, and a PWM timer that generates a pulse turning on the transistor on the basis of the on-duty. A microcontroller sends the current command value to the current control semiconductor element, receives the current value output from the current detection circuit and the on-duty output from the compensator from the current control semiconductor element, and detects failure of the current control semiconductor element on the basis of the received current value and on-duty.
Abstract translation: 提供一种能够在没有马达转速传感器的情况下执行广泛应用的故障检测的电流控制装置。 电流控制半导体元件在相同的半导体芯片上包括驱动负载的晶体管，检测负载电流的电流检测电路，从电流指令值和电流值计算晶体管的占空比的补偿器 来自电流检测电路的输出;以及PWM定时器，其基于占空比产生导通晶体管的脉冲。 微控制器将电流指令值发送到电流控制半导体元件，从电流控制半导体元件接收从电流检测电路输出的电流值和来自补偿器的占空比输出，并检测电流控制半导体元件的故障 所接受的现值和值班的依据。
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公开(公告)号：US07872845B2
公开(公告)日：2011-01-18
申请号：US11731722
申请日：2007-03-30
Applicant: Kyle Shawn Williams , Joseph Funyak
Inventor： Kyle Shawn Williams , Joseph Funyak
CPC classification number: H01F7/1844 , H01F2007/1888
Abstract: One embodiment relates to a control system. In one embodiment, a control system is configured to drive a load based on a set-point of the load, a measured load characteristic and a supply voltage of the load. The controller is configured to determine a duty cycle based on the load characteristic, the set-point, and the supply voltage. The controller is further configured to drive the load in response to the duty cycle.
Abstract translation: 一个实施例涉及一种控制系统。 在一个实施例中，控制系统被配置为基于负载的设定点，测量的负载特性和负载的电源电压来驱动负载。 控制器被配置为基于负载特性，设定点和电源电压来确定占空比。 控制器还被配置为响应于占空比来驱动负载。
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