专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

161. 发明专利

JP2003052194A Magnetic disc storage device 有权
标题翻译：磁盘存储设备
公开(公告)号：JP2003052194A
公开(公告)日：2003-02-21
申请号：JP2001378352
申请日：2001-12-12
申请人： Hitachi Ltd , Hitachi Ulsi Systems Co Ltd , 株式会社日立製作所 , 株式会社日立超エル・エス・アイ・システムズ
发明人： KUROIWA HIROSHI , KONOUE YASUHIKO
IPC分类号： G11B15/18 , G11B5/55 , G11B21/08 , G11B21/10 , H02P25/06 , H02P7/00
CPC分类号： G11B5/5526 , G11B5/5547 , G11B21/083
摘要： PROBLEM TO BE SOLVED: To enable speedup of accessing on one hand and enhance the accuracy in magnetic head positioning control at tracking one the other, while minimizing both the occurrence of EMI noise and the heat generation which may induce read/write errors at linear drive.
SOLUTION: This magnetic disc storage device is equipped with a linear drive mode for driving a voice coil motor by linear control and a pulse drive mode for driving the voice coil motor by pulse width control. When the drive current of the voice coil motor is small, this device makes it execute the linear drive mode; and when the current is large, this makes it execute the pulse drive mode. The linear drive mode and the pulse drive mode are conducted, using common output amplifiers (3 and 4). The output amplifier is a push-pull system of output circuit and in linear drive mode, A/B-class actions are set, and in pulse drive mode, the B-class action is set.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：一方面提高访问速度，提高磁头定位控制的精度，同时尽可能减少EMI噪声的出现和产生可能引起线性驱动的读/写错误的发热。解决方案：该磁盘存储装置具有用于通过线性控制驱动音圈电机的线性驱动模式和用于通过脉冲宽度控制来驱动音圈电机的脉冲驱动模式。当音圈电机的驱动电流小时，该装置使其执行线性驱动模式; 并且当电流较大时，这使得它执行脉冲驱动模式。使用公共输出放大器（3和4）进行线性驱动模式和脉冲驱动模式。输出放大器是输出电路的推挽系统，在线性驱动模式下，设置A / B级动作，在脉冲驱动模式下，B级动作被设定。

162. 发明专利

JP2002168338A DEVICE AND METHOD FOR CONTROLLING AUTOMATIC TRANSMISSION 失效
公开(公告)号：JP2002168338A
公开(公告)日：2002-06-14
申请号：JP2000367742
申请日：2000-11-29
申请人： HITACHI LTD
发明人： OKADA TAKASHI , MINOWA TOSHIMICHI , KAYANO MITSUO , OCHI TATSUYA , SAKAMOTO HIROSHI , KUROIWA HIROSHI , OZAKI NAOYUKI , MATSUMURA TETSUO
IPC分类号： F16H63/20 , F16H3/12 , F16H61/04 , F16H61/08 , F16H61/28
摘要： PROBLEM TO BE SOLVED: To prevent the shift of the release timing of an engaging type clutch caused by the change of the characteristic of a friction type clutch while torque transmission is switched from the engaging type clutch to the friction type clutch during the gearshift and prevent the deterioration of comfortability in riding. SOLUTION: The timing to start the release of the engaging type clutch is learned by a learning control means 32 comprising a learning determination means 322 for determining the condition when the engaging type clutch is released and a learning operation means 321 for learning the start of releasing the clutch. As the optimal release control timing is learned by the engaging type clutch learning control means whenever the characteristic of the clutch is changed because of the secular change such as the response delay of an assist clutch, the gearshift shock when the gearshift is started and the deterioration of comfortability in riding can be prevented.

163. 发明专利

JP2001304402A AUTOMATIC TRANSMISSION 失效
公开(公告)号：JP2001304402A
公开(公告)日：2001-10-31
申请号：JP2000126211
申请日：2000-04-20
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： YAMAZAKI MASARU , NOGAMI TADAHIKO , KUROIWA HIROSHI , NODA JUNICHI
IPC分类号： F15B21/04 , B01D19/00 , F16H61/28 , F16H63/30
摘要： PROBLEM TO BE SOLVED: To prevent a delay of action in a hydraulic mechanism, by efficiently removing a component of air in an operating fluid before it is supplied to the hydraulic mechanism, in an automatic transmission. SOLUTION: This automatic transmission comprises a hydraulic mechanism 1 driving an operating part, a pump 4 supplying an operating fluid to the hydraulic mechanism 1, and a gas separator device 7 separating an air component in side the operating fluid. This gas separator device 7 is arranged between the hydraulic mechanism 1 and the pump 4.

164. 发明专利

JP2001132825A FRICTIONALLY ENGAGING DEVICE OF AUTOMATIC TRANSMISSION 失效
公开(公告)号：JP2001132825A
公开(公告)日：2001-05-18
申请号：JP31241699
申请日：1999-11-02
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： YAMAZAKI MASARU , NOGAMI TADAHIKO , KUROIWA HIROSHI , NODA JUNICHI
IPC分类号： F16H61/00
摘要： PROBLEM TO BE SOLVED: To quickly let out air mixed in a hydraulic fluid pressure chamber of a frictionally engaging device in an automatic transmission, and to prevent the inflow of air in the hydraulic fluid pressure chamber. SOLUTION: In an automatic transmission having a frictionally engaging device for engaging with a shaft 7 driven by an engine by the pressure when a hydraulic fluid 13 is supplied in a hydraulic fluid pressure chamber 3 from the outside, a valve mechanism including a check valve 8 for checking a flow in a chamber from the chamber outside of the hydraulic fluid pressure chamber 3 and a float valve 9 smaller than the hydraulic fluid in a specific gravity of a valve element, is arranged in a communicating passage 10 for communicating the chamber inside with the chamber outside of the hydraulic fluid pressure chamber.

165. 发明专利

JP2001080389A TRANSMISSION CONTROLLER FOR AUTOMOBILE 失效
公开(公告)号：JP2001080389A
公开(公告)日：2001-03-27
申请号：JP25777399
申请日：1999-09-10
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： NODA JUNICHI , KUROIWA HIROSHI
IPC分类号： B60W10/04 , B60W10/06 , B60W10/10 , F16H61/02 , F16H63/50 , B60K41/04
摘要： PROBLEM TO BE SOLVED: To sufficiently lower a gear shift shock so as to easily provide comfortableness by computing transmission torque inputted to an automatic transmission, controlling a clamping pressure for a frictional member on the basis of the transmission torque, and correcting engine torque on the basis of the inputted number of revolutions and the inputted torque. SOLUTION: An automatic transmission control unit 8 carries out various kinds of required computing according to the number of turbine revolutions, the number of output shaft revolutions, various kinds of signals from oil temperature sensors, 17, 18, 22, the number of engine revolutions, a throttle opening and the like so as to compute an optimum speed ratio. In compliance with the selected optimum speed ratio, a valve opening drive signal is fed to a solenoid valve 23a in an oil pressure circuit 6, while a control signal is fed to a control solenoid 23b, and the solenoid valve 23a switches an oil pressure route in the oil pressure circuit 6 for controlling an oil pressure. This oil pressure is a hydraulic pressure fed to a frictional clutch for switching a transmission ratio based on a gear train 16, and according to this hydraulic pressure, a clamping force for the frictional member in the frictional clutch mechanism is decided and engine torque is corrected.

166. 发明专利

JP2000314472A CONTROL DEVICE FOR VEHICLE TRANSMISSION 失效
公开(公告)号：JP2000314472A
公开(公告)日：2000-11-14
申请号：JP12263099
申请日：1999-04-28
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： NANAO YUICHIRO , KUROIWA HIROSHI , NODA JUNICHI
IPC分类号： F16H61/02
摘要： PROBLEM TO BE SOLVED: To provide a control device for a vehicle transmission for generating a minimum working pressure necessary to a fastening friction member in all operating regions and improve fuel consumption by avoiding supply of a more than necessary working pressure as a slide of the friction member during the rapid change of input torque is surely prevented from occurring. SOLUTION: Working pressure calculating means 130 of an ATCU 100 for controlling a transmission calculates a working pressure related to the friction member of a transmission based on torque of a turbine and the rotation speed of the turbine. A working pressure correcting means 150 performs correction by adding a correction amount, determined according to a change amount of the load state change of a prime mover, to a working pressure determined by a working pressure calculating means 130. The ATCU 100 controls the working pressure, applied on the friction member, according to a value of a corrected working pressure.

167. 发明专利

JP2000028635A ACCELERATION-DETECTING APPARATUS 失效
公开(公告)号：JP2000028635A
公开(公告)日：2000-01-28
申请号：JP19387799
申请日：1999-07-08
申请人： HITACHI LTD
发明人： SHIMADA SATOSHI , SUZUKI KIYOMITSU , TSUCHIYA SHIGEKI , UKAI SEIICHI , KANEYASU MASAMI , KUROIWA HIROSHI , YOKOTA YOSHIHIRO
IPC分类号： G01P21/00 , G01P15/125
摘要： PROBLEM TO BE SOLVED: To obtain a correct detection output by setting a means close to a detection means for stimulating and driving the detection means and carrying out online a self diagnosis or self calibration. SOLUTION: This detecting apparatus has a stimulating means 2, integrally set close to a detecting means, thereby applying a calibration signal through the means. A response delay from the detecting apparatus is brought about extremely few. Moreover, since a high-speed signal-processing circuit is used, the required time for a self calibration can be shortened in comparison with a change time of measured values. Even when self calibration is conducted during the measurement, an output of the detecting apparatus is not disturbed that is, the so-called 'online calibration' is enabled. More specifically, a multiplexer operates in accordance with a command from a microcomputer having a memory, takes an output signal of the detecting means 1 into an amplifier and an analog digital converter to covert the signal into a digital signal. Based on this value, a source voltage is supplied, the calibration signal is applied via the amplifier to the stimulating means 2, or the like. A highly accurate output that can correct errors is obtained accordingly.

168. 发明专利

JPH10159957A SHIFT CONTROL DEVICE AND SHIFT CONTROL METHOD OF AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH10159957A
公开(公告)日：1998-06-16
申请号：JP31334096
申请日：1996-11-25
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： IBAMOTO MASAHIKO , SATO KAZUHIKO , KUROIWA HIROSHI , SHIOTANI MAKOTO
IPC分类号： F16H9/00 , F16H61/00 , F16H61/02 , F16H61/662
摘要： PROBLEM TO BE SOLVED: To obtain a comfortable accelerating feeling according to intention of acceleration of a driver by performing an operation on always accurate driving torque, performing an operation on the change gear ratio to attain target driving torque set on the basis of a stepping quantity of an accelerator pedal, and controlling the speed change ratio of an automatic transmission. SOLUTION: Torque to generate acceleration comfortably felt at vehicle speed at its time, is searched from throttle opening TVO and output rotating speed No by a target torque means 301, and is outputted as target torque tTo. On the other hand, output torque To is calculated by an output torque operation means 302 from the throttle opening TVO, the output rotating speed No, engine speed Ne obtained by a crank angle signal and a turbine rotating speed Nt obtained from an input rotating speed signal. The target output torque tTo and the output torque To are compared with each other, and in its deviation, gain is adjusted by a control compensator 303, and a change gear ratio changing signal ΔR is generated, and is added by a speed change control means 304 to the present speed change ratio R on which an operation is performed by a change gear ratio operation block 305, and the change gear ratio of a continuously variable transmission 102 is controlled.

169. 发明专利

JPH09249051A CONTROLLER OF AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH09249051A
公开(公告)日：1997-09-22
申请号：JP5881396
申请日：1996-03-15
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： NODA JUNICHI , SATO KAZUHIKO , IBAMOTO MASAHIKO , KUROIWA HIROSHI , OKADA MITSUYOSHI
IPC分类号： B60W10/04 , B60W10/00 , B60W10/06 , B60W10/10 , B60W10/11 , F02D29/00 , F16H59/14 , F16H59/36 , F16H59/38 , F16H59/68 , F16H61/00 , F16H61/04 , F16H61/08 , F16H63/50 , B60K41/06
摘要： PROBLEM TO BE SOLVED: To restrict speed change shock, control a speed change time to a prescribed time, and realize a speed change with less discomfort to occupant by setting a turbine angle speed, the actuation pressure of a frictional member regarding from the turbine torque to the speed change, and the reduction quantity of a torque within a realistic range. SOLUTION: When a speed change instruction is issued during up-shift, calculation is performed by means of an ATCU7 after a prescribed time or at the time when the torque of an engine 1 start reducing. That is, a turbine rotation speed, a turbine torque, and an output shaft torque are obtained, and an assumptivce transmission torque is obtained from the obtained turbine rotation speed, the turbine torque, and a prescribed speed change time. The difference between the assumptive transmission torque and the output shaft torque is obtained, and positive pr negative is judged. By this judgment, the output shaft torque is assumed as the upper value of the assumptive transmission torque, and the torque while in speed change is identical to the torque before speed change or is reduced and determined. Thereby, the speed change with less discomfort to clews can be realized.

170. 发明专利

JPH09133708A CAPACITANCE TYPE ACCELERATION SENSOR AND ITS CALIBRATION AND DIAGNOSING METHOD 失效
公开(公告)号：JPH09133708A
公开(公告)日：1997-05-20
申请号：JP27582496
申请日：1996-10-18
申请人： HITACHI LTD
发明人： SHIMADA SATOSHI , SUZUKI KIYOMITSU , TSUCHIYA SHIGEKI , UKAI SEIICHI , KANEYASU MASAMI , KUROIWA HIROSHI , YOKOTA YOSHIHIRO
IPC分类号： G01P21/00 , B81B3/00 , G01P15/125 , G01P15/13
摘要： PROBLEM TO BE SOLVED: To perform self diagnosis and self calibration in on-line mode by detecting acceleration based on capacitance between first and second electrodes. SOLUTION: A detector 5 is composed of a detecting means 1, an exciting means 2 provided integrally with and close to the detecting means 1 and a signal processing means 4. A multiplexer is actuated by an instruction from the microcomputer of the means 4, the output signal of the means 1 is converted into a digital signal and based on the value thereof, a power supply voltage is supplied or a correcting signal is added to the means 2. Thus, a detected output is obtained, which enables an error to be corrected. In an acceleration sensor, a load 53 and a cantilever 54 for supporting the load 53 are formed in a center silicon substrate 51 by anisotropic etching. Upper fixed electrodes 55a and 55b are formed in surfaces opposed to loads placed on upper and lower substrates 52a and 52b positioned on the upper and lower parts of this substrate 51, displacement is calculated from capacitance between the fixed electrode and the load (movable electrode) and acceleration is measured.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式