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1. 发明专利

JP2009011013A Power conversion equipment 审中-公开
标题翻译：电力转换设备
公开(公告)号：JP2009011013A
公开(公告)日：2009-01-15
申请号：JP2007167069
申请日：2007-06-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIGETA SATORU , FUJINO SHINICHI , NOTO YASUO
IPC分类号： H02M1/08 , H02M7/5387
CPC分类号： H02M3/155
摘要： PROBLEM TO BE SOLVED: To provide power conversion equipment which shortens its switching time while suppressing its surge voltage. SOLUTION: The power conversion equipment has a MOSFET 1 where a main current flows in a direction which goes from a drain electrode 12 to a source electrode 11, based on the voltage applied to a gate electrode 13, a voltage switching circuit 4 which controls the voltage to be applied to the gate electrode 13, and a conduction switching circuit 8 which is connected between the drain electrode 12 and the gate electrode 13. In case that the voltage switching circuit 4 operates to switch off the MOSFET 1, the conduction of the conduction switching circuit 8 is controlled, based on the first potential difference between the drain electrode 12 and the source electrode 11 and the second potential difference between the gate electrode 13 and the source electrode 11. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供在抑制其浪涌电压的同时缩短开关时间的电力转换设备。解决方案：功率转换设备具有MOSFET 1，其中主电流根据施加到栅电极13的电压，电压切换电路4，从漏极12流到源电极11的方向流动其控制施加到栅电极13的电压，以及连接在漏电极12和栅电极13之间的导通开关电路8.在电压切换电路4关断MOSFET 1的情况下，基于漏电极12和源电极11之间的第一电位差和栅电极13与源电极11之间的第二电位差来控制导通开关电路8的导通。（C） 2009年，JPO＆INPIT

2. 发明专利

JPH11174020A A/F SENSOR CONTROL CIRCUIT 失效
公开(公告)号：JPH11174020A
公开(公告)日：1999-07-02
申请号：JP34252297
申请日：1997-12-12
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： MINAMI NAOKI , NOTO YASUO , UENO SADAYASU
IPC分类号： G01N27/41 , F02D35/00 , F02D45/00 , G01N27/409 , G01N27/419
摘要： PROBLEM TO BE SOLVED: To control several kinds of A/F sensors by means of a single kind of control circuit by arranging a determination circuit determining a kind of an A/F sensor from an output of the A/F sensor. SOLUTION: When different microcomputers are used for an engine controlling microcomputer and for a sensor controlling microcomputer, a sensing cell driving voltage is computed by the microcomputer so as to be impressed to a terminal Rf. The current flowing in the terminal Rf becomes voltage between both ends of R1 so as to be inputted to an A/D converter via an amplifier. In the case of two cells, a terminal of a reference cell is connected to Pm, while a voltage applied to the terminal Rf is controlled so that the voltage of the terminal is kept constant. In the case of a single cell, because a reference cell and a sensing cell are the same, an amplifier is actuated on the basis of a signal of DO1 and a stop of high impedance is switched so that voltage impression and voltage input from the reference cell are carried out. In this case, the voltage of the reference cell is inputted to AD4. Dt represents a fixed voltage. A heater driver impresses voltage to the heater. A microcomputer controlling these apparatus outputs A/F data abnormal signal and the like to an engine control module.

3. 发明专利

JPH02155873A DEVICE FOR CONTROLLING CURRENT 失效
公开(公告)号：JPH02155873A
公开(公告)日：1990-06-14
申请号：JP30861688
申请日：1988-12-06
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： MASAKI RYOZO , KOTERASAWA TOSHIYUKI , MARUMOTO KATSUJI , KURIYAMA SHIGERU , NOTO YASUO , KUME MASAYUKI , TAWARA KAZUO
IPC分类号： B62D5/04 , H02P27/08
摘要： PURPOSE:To improve responsiveness in a motor driven power steering by comparing a serrate carrier signal with a current detecting voltage value to obtain a second PWM signal and synchronously detecting a motor current. CONSTITUTION:A first PWM generating circuit 16 compares a voltage command value from a circuit 14 with a serrate carrier signal and turns on/off a control PWM signal P1, and a PWM switchover circuit 17 controls a motor 9 in accordance with a right/left switchover signal from a current command circuit 12. Also, a second PWM generating circuit 20 compares a current detecting voltage value below the voltage command value according to a proportion circuit 19 with the serrate carrier signal and turns on/off a second PWM signal, to feedback signals from current detecting terminals 11c, 11d to a signal from the current command circuit 12 via a current detection switchover circuit 18, a sample hold circuit 21, and an A/D converter 22. Thereby, a current instant value which is nearly conformed to an average value is detected from among pulsating currents to increase the responsiveness of a current control system.

4. 发明专利

JPS63253401A SAFETY DEVICE FOR ACTUATOR CONTROL CIRCUIT 失效
公开(公告)号：JPS63253401A
公开(公告)日：1988-10-20
申请号：JP8690087
申请日：1987-04-10
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： NOTO YASUO , SUGIURA NOBORU , NAITO SHOTARO , KUME MASAYUKI
IPC分类号： G06F11/30 , G05B9/02 , G05B23/02
摘要： PURPOSE:To improve the safety of an actuator control circuit by securing such a constitution where both a microcomputer and a microcomputer monitor circuit monitor the abnormality with each other so that the malfunctions of an actuator can be effectively avoided. CONSTITUTION:A microcomputer monitor means 6 is added to a control circuit for an actuator 2 to monitor the working state of a microcomputer 1. While the microcomputer 1 contains a means to monitor the working state of the means 6. Thus, a circuit is constituted so that both the microcomputer 1 and the means 6 monitor the abnormality with each other. Then, the microcomputer 1 and the means 6 display the alarms to cut off an actuator drive circuit when they detect the abnormality with each other. Thus, the malfunctions of the actuator 2 are prevented and the safety of the actuator control circuit is improved.

5. 发明专利

JPS62286874A ELECTRIC MOTOR DRIVEN POWER STEERING DEVICE 失效
公开(公告)号：JPS62286874A
公开(公告)日：1987-12-12
申请号：JP13034986
申请日：1986-06-06
申请人： HITACHI LTD
发明人： NOTO YASUO , SUGIURA NOBORU , NAITO SHOTARO
IPC分类号： B62D5/04 , B62D6/00
摘要： PURPOSE:To permit any of the plural controls of mutually different mode to be selected in accordance with a content of abnormality generated in a control system, by performing a control of auxiliary steering force, which must be given to a steering system, through the plural different modes. CONSTITUTION:An electric motor driven power steering device is actuated by the first control mode, in which switches SW1-SW4 are selected in a condition as shown in the drawing, second control mode, when only the switches SW1, SW2 are selected oppositely to the drawing, and the third control mode where the switches SW3, SW4 are turned off in no relation to a selected position of the switches SW1, SW2. The first control mode performs a power steering control by a digital soft process through constitution with a microcomputer serving as the center, while the second control mode performs the power steering control by analog through constitution with a torque signal processing circuit 85 serving as the center, and the third mode places the control in a condition that a power. steering function is lost.

6. 发明专利

JPS60128373A CURRENT DETECTOR 失效
公开(公告)号：JPS60128373A
公开(公告)日：1985-07-09
申请号：JP23629983
申请日：1983-12-16
申请人： HITACHI LTD
发明人： KURIYAMA SHIGERU , NOTO YASUO , INOUE YASUHIRO
IPC分类号： G01R1/22 , G01R15/20 , G01R19/15
摘要： PURPOSE:To increase a signal-to-noise ratio and to detect precisely a current by varying the control current of a Hall element to which a feed current is converted into the variation in magnetic flux density and applied when it exceeds the range of a measurement current. CONSTITUTION:Grips 3 and 4 movable pieces 1 and 2 are held to clamp a cable 15 and then released from being gripped, and then a support shaft 8 presses an iron core 7 with the reaction force of a spring 16 to contact an iron core 10, constituting a magnetic circuit. When a current flows through the cable 15, magnetic flux produced by the iron cores 7 and 10 varies in density and the output voltage of the Hall element varies to output a signal through a terminal-stage amplifying circuit 20. On the other hand, when a measurement is taken while the measurement range is narrowed down, the application of the control signal to a terminal C turns on a transistor TR1 to connect a resistance R in parallel to R4. Consequently, the voltage drop across a resistance R5 increases and conduction current of a TR2 increases to increase the Hall element control current, so the output signal increases to improve the precision.

7. 发明专利

JPS6018452A MOTOR DRIVEN POWER STEERING CONTROL DEVICE 失效
公开(公告)号：JPS6018452A
公开(公告)日：1985-01-30
申请号：JP12483583
申请日：1983-07-11
申请人： HITACHI LTD
发明人： NOTO YASUO , KURIYAMA SHIGERU , ROKUTAN HIDEO , SUGIMOTO SHIYUNICHIROU , NEMOTO KIYOSHI
IPC分类号： B62D5/04
摘要： PURPOSE:To have smooth restoration of a tire by furnishing a sensor to extract the deviation of the steering rod from the steering gear shaft, distinguishing the direction of this deviation increasing or decreasing, and thereupon controlling the motor so as to cancel the statical torque. CONSTITUTION:The output of a sensor 7 to extract the deviation of the steering rod from the steering gear shaft, which shall correspond to the amount of steering operation, is taken in a deviation sensor 12, and the change DELTAE of deviation is compared with the reference value DELTAE0. If DELTAE>DELTAE0, a latch circuit 14 is actuated, and if DELTAE

8. 发明专利

JPS5925501A Controller for electric rolling stock 失效
标题翻译：电动滚筒控制器
公开(公告)号：JPS5925501A
公开(公告)日：1984-02-09
申请号：JP13314682
申请日：1982-07-29
申请人： Hitachi Ltd
发明人： NOTO YASUO , SUGIMOTO SHIYUNICHIROU , HORIUCHI MICHIMASA
IPC分类号： B60L15/28 , B60L15/08 , G01R19/02 , H02M3/155 , H02P7/29
CPC分类号： B60L15/08 , Y02T10/645 , Y02T10/7258
摘要： PURPOSE:To stabilize a speed by taking in currents flowing through a motor when a chopper is turned ON-OFF, calculating average currents and controlling the electric rolling stock. CONSTITUTION:A micro-computer 1 is constituted by a microprocessor 2, a RAM3, a ROM4, an oscillator 5 and a bus line 6. An analog input circuit 7 converts analog electric signals ACA corresponding to the quantity of an accelerator device 8 stepped on and analog signals obtained by passing detecting signals under the state of operation of a main circuit 10 through a level converting circuit 11 into digital signals and takes them in. An interruption circuit 14 and the flow-rate control circuit 15 of the chopper determine ON time during one period, i.e. a duty. The square waves of the output are divided into ON pulses and OFF pulses by a pulse distributing circuit 16. These pulse signals are amplified 17, and used as chopper signals in the main circuit 10. Accordingly, the currents flowing through the motor are taken in when the chopper is turned ON-OFF, average currents are calculated, and the electric rolling stock is controlled.
摘要翻译：目的：通过在斩波器接通断开时接收电流流过电流来稳定速度，计算平均电流并控制电动车辆。构成：微型计算机1由微处理器2，RAM3，ROM4，振荡器5和总线6构成。模拟输入电路7将与加速器装置8的量对应的模拟电信号ACA转换成踩踏将通过电平转换电路11的主电路10的运行状态下的检测信号通过电平变换电路11获取的模拟信号输入到数字信号中。中断电路14和斩波器的流量控制电路15决定接通时间在一个时期，即义务。输出的方波被脉冲分配电路16分成ON脉冲和OFF脉冲。这些脉冲信号被放大17，并在主电路10中用作斩波信号。因此，流过马达的电流被吸入当斩波器接通 - 断开时，计算平均电流，控制电动车辆。

9. 发明专利

JP2007199014A Temperature history measurement method and device 有权
标题翻译：温度历史测量方法和装置
公开(公告)号：JP2007199014A
公开(公告)日：2007-08-09
申请号：JP2006020494
申请日：2006-01-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMADA SHIGEKI , TOMITA TSUGIO , NOTO YASUO
IPC分类号： G01K1/02 , B60S5/00 , F02B39/16 , F02D35/00 , F02D45/00 , G01D9/00
摘要： PROBLEM TO BE SOLVED: To provide a method for surely and easily measuring the history of atmospheric temperature of an electronic controller, for which the atmosphere temperature is prescribed.
SOLUTION: A temperature sensor 20 is mounted on a substrate 51 inside the electronic controller 5 and the atmospheric temperature of the controller 5 is estimated from the substrate temperature by a CPU 9. The CPU 9 periodically acquires the measured values of the temperature sensor and writes them in a nonvolatile memory 17, when the values are predetermined temperature (i.e., 125°C) or higher. The nonvolatile memory 17 is associated with the temperature for each address, and "1" is recorded for the data of associated address, when the predetermined temperature or higher is measured. When the measured temperature exceeds the predetermined temperature, all is recorded in addresses from the corresponding temperature to the predetermined temperature. No rewriting is performed in the addresses that have been recorded once.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种确定和容易地测量气氛温度规定的电子控制器的大气温度历史的方法。
解决方案：温度传感器20安装在电子控制器5内部的基板51上，并且通过CPU 9从基板温度估计控制器5的大气温度.CPU 9周期性地获取温度的测量值传感器，并将其写入非易失性存储器17中，当值为预定温度（即125℃）或更高时。非易失性存储器17与每个地址的温度相关联，并且当测量预定温度或更高时，记录关于相关地址的数据的“1”。当测量温度超过预定温度时，全部记录在从相应温度到预定温度的地址中。在一次记录的地址中不进行重写。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2001059833A CONCENTRATION DETECTING APPARATUS FOR EXHAUST GAS 失效
公开(公告)号：JP2001059833A
公开(公告)日：2001-03-06
申请号：JP23609199
申请日：1999-08-23
申请人： HITACHI LTD
发明人： NOTO YASUO
IPC分类号： G01N27/419
摘要： PROBLEM TO BE SOLVED: To provide a concentration detecting apparatus by which the concentration of an exhaust gas whose excess air factor λ as one operating region of a vehicle is approximately 1 can be detected with good accuracy. SOLUTION: This concentration detecting apparatus is constituted of a reference electrode 2 and a pumping cell 3. When an air-fuel ratio sensor 1 which measures the air-fuel ratio of an exhaust gas detects that the excess air ratio λof the exhaust gas is approximately a theoretical air-fuel ratio of 1, a control part 5 stops the flow of a current I flowing to the pumping cell 3, and it detects the voltage of the pumping cell 3. The value of the voltage is used as the detection valve of the concentration of the exhaust gas.

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