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1. 发明专利

DE3821083A1 未知
公开(公告)号：DE3821083A1
公开(公告)日：1989-01-12
申请号：DE3821083
申请日：1988-06-22
申请人： HITACHI LTD
发明人： KIMURA HIROSHI , NAITO SHOTARO , MIYASHITA KUNIO , NOTO YASUO , SUGIURA NOBORU , TAKAHASHI TADASHI , YAMAMURA HIROHISA , YAMASHITA SEIZI , KAWAMATA SYOOICHI
IPC分类号： B62D5/04 , B62D6/10 , B62D15/02 , G01L3/10 , G01L5/22 , G01P3/44 , G01B7/30
摘要： A device for detecting a load torque using angle detectors fitted with a certain spacing on a shaft which is rotated by a drive source and on the basis of a relative angular difference of angles detected by the angle detectors. The device includes two rotary drums or discs fitted with a certain spacing on the drive side and load side of the shaft, with a plurality of magnetic poles for generating magnetic signals being formed on the surface thereof, and a magnetic sensor disposed to confront the surface of the rotary drums or discs, with magnetic resistance effect elements which vary in internal resistance in response to the magnetism of the magnetic poles being provided thereon. The amount of torsion created by the load on the load side of the rotary shaft is measured as a phase difference of outputs of the magnetic sensor, and the torque is detected in terms of the angular difference between the magnetic drums or discs. The device is operative to detect a torque in both storage and rotation, and capable of detection within a period of magnetic signal, whereby high-accuracy, high-resolution torque detection is made possible.

2. 发明专利

GB2207763B TORQUE DETECTING APPARATUS 未知
公开(公告)号：GB2207763B
公开(公告)日：1992-03-18
申请号：GB8814893
申请日：1988-06-22
申请人： HITACHI LTD
发明人： KIMURA HIROSHI , NAITO SHOTARO , MIYASHITA KUNIO , YAMAMURA HIROHISA , YAMASHITA SEIZI , KAWAMATA SYOOICHI , NOTO YASUO , SUGIURA NOBORU , TAKAHASHI TADASHI
IPC分类号： B62D5/04 , B62D6/10 , B62D15/02 , G01L3/10 , G01L5/22
摘要： A device for detecting a load torque using angle detectors fitted with a certain spacing on a shaft which is rotated by a drive source and on the basis of a relative angular difference of angles detected by the angle detectors. The device includes two rotary drums or discs fitted with a certain spacing on the drive side and load side of the shaft, with a plurality of magnetic poles for generating magnetic signals being formed on the surface thereof, and a magnetic sensor disposed to confront the surface of the rotary drums or discs, with magnetic resistance effect elements which vary in internal resistance in response to the magnetism of the magnetic poles being provided thereon. The amount of torsion created by the load on the load side of the rotary shaft is measured as a phase difference of outputs of the magnetic sensor, and the torque is detected in terms of the angular difference between the magnetic drums or discs. The device is operative to detect a torque in both storage and rotation, and capable of detection within a period of magnetic signal, whereby high-accuracy, high-resolution torque detection is made possible.

3. 发明专利

GB2207763A MEASURING TORQUE 未知
公开(公告)号：GB2207763A
公开(公告)日：1989-02-08
申请号：GB8814893
申请日：1988-06-22
申请人： HITACHI LTD
发明人： KIMURA HIROSHI , NAITO SHOTARO , MIYASHITA KUNIO , YAMAMURA HIROHISA , YAMASHITA SEIZI , KAWAMATA SYOOICHI , NOTO YASUO , SUGIURA NOBORU , TAKAHASHI TADASHI
IPC分类号： B62D5/04 , B62D6/10 , B62D15/02 , G01L3/10 , G01L5/22
摘要： A device for detecting a load torque using angle detectors fitted with a certain spacing on a shaft which is rotated by a drive source and on the basis of a relative angular difference of angles detected by the angle detectors. The device includes two rotary drums or discs fitted with a certain spacing on the drive side and load side of the shaft, with a plurality of magnetic poles for generating magnetic signals being formed on the surface thereof, and a magnetic sensor disposed to confront the surface of the rotary drums or discs, with magnetic resistance effect elements which vary in internal resistance in response to the magnetism of the magnetic poles being provided thereon. The amount of torsion created by the load on the load side of the rotary shaft is measured as a phase difference of outputs of the magnetic sensor, and the torque is detected in terms of the angular difference between the magnetic drums or discs. The device is operative to detect a torque in both storage and rotation, and capable of detection within a period of magnetic signal, whereby high-accuracy, high-resolution torque detection is made possible.

4. 发明专利

DE3661250D1 METHOD OF OPERATING ELECTRIC POWER ASSISTED STEERING SYSTEMS AND ELECTRIC POWER ASSISTED STEERING SYSTEM 未知
公开(公告)号：DE3661250D1
公开(公告)日：1988-12-29
申请号：DE3661250
申请日：1986-01-31
申请人： HITACHI LTD
发明人： NOTO YASUO , SUGIURA NOBORU , OUCHI HIDEYUKI
IPC分类号： B62D5/04
摘要： An electro-motive power steering system includes a torque sensor (6; 208) for detecting a steering force exerted to a steering wheel (1), a motor (7; 202) controlled in accordance with the output of the torque sensor, a steering angle sensor (10; 207) for detecting a a steering angle, acceleration/deceleration deciding circuit (23) for deciding based on the outputs of the torque sensor and the steering angle sensor whether the steering of the steering wheel is accelerated or decelerated, and a function generator (24, 25) for generating a function of either one of acceleration or deceleration in accordance with the result of the decision by the acceleration/deceleration deciding circuit, wherein a steering assisting force corresponding to the acceleration or deceleration of the steering of the steering wheel is applied to the steering wheel.

5. 发明专利

GB2245712A TORQUE DETECTING APPARATUS. 未知
公开(公告)号：GB2245712A
公开(公告)日：1992-01-08
申请号：GB9113393
申请日：1991-06-19
申请人： HITACHI LTD
发明人： KIMURA HIROSHI , NAITO SHOTARO , MIYASHITA KUNIO , YAMAMURA HIROHISA , YAMASHITA SEIZI , KAWAMATA SYOOICHI , NOTO YASUO , SUGIURA NOBORU , TAKAHASHI TADASHI
IPC分类号： B62D5/04 , B62D6/10 , B62D15/02 , G01L3/10 , G01L5/22
摘要： A device for detecting a load torque using angle detectors fitted with a certain spacing on a shaft which is rotated by a drive source and on the basis of a relative angular difference of angles detected by the angle detectors. The device includes two rotary drums or discs fitted with a certain spacing on the drive side and load side of the shaft, with a plurality of magnetic poles for generating magnetic signals being formed on the surface thereof, and a magnetic sensor disposed to confront the surface of the rotary drums or discs, with magnetic resistance effect elements which vary in internal resistance in response to the magnetism of the magnetic poles being provided thereon. The amount of torsion created by the load on the load side of the rotary shaft is measured as a phase difference of outputs of the magnetic sensor, and the torque is detected in terms of the angular difference between the magnetic drums or discs. The device is operative to detect a torque in both storage and rotation, and capable of detection within a period of magnetic signal, whereby high-accuracy, high-resolution torque detection is made possible.

6. 发明专利

DE3760863D1 POWER STEERING CONTROL SYSTEM 未知
公开(公告)号：DE3760863D1
公开(公告)日：1989-11-30
申请号：DE3760863
申请日：1987-01-28
申请人： HITACHI LTD
发明人： NOTO YASUO , SUGIURA NOBORU , OUCHI HIDEYUKI
IPC分类号： B62D6/00 , B62D5/04
摘要： An electrically-operated power steering control system is disclosed for an electrically-operated power steering apparatus in which a motor (7) is controlled in accordance with a predetermined function of the steering power applied to a steering wheel (1) and an auxiliary steering power is supplied by this motor (7). The motor (7) is controlled on the basis of a conduction ratio (α n ) corresponding to the difference (SA) between the acceleration/deceleration of a detected torque value of a torque sensor (6, 20) and the acceleration of the steering angle.

7. 发明专利

GB2245712B TORQUE DETECTING APPARATUS 未知
公开(公告)号：GB2245712B
公开(公告)日：1992-03-25
申请号：GB9113393
申请日：1991-06-19
申请人： HITACHI LTD
发明人： KIMURA HIROSHI , NAITO SHOTARO , MIYASHITA KUNIO , YAMAMURA HIROHISA , YAMASHITA SEIZI , KAWAMATA SYOOICHI , NOTO YASUO , SUGIURA NOBORU , TAKAHASHI TADASHI
IPC分类号： B62D5/04 , B62D6/10 , B62D15/02 , G01L3/10 , G01L5/22
摘要： A device for detecting a load torque using angle detectors fitted with a certain spacing on a shaft which is rotated by a drive source and on the basis of a relative angular difference of angles detected by the angle detectors. The device includes two rotary drums or discs fitted with a certain spacing on the drive side and load side of the shaft, with a plurality of magnetic poles for generating magnetic signals being formed on the surface thereof, and a magnetic sensor disposed to confront the surface of the rotary drums or discs, with magnetic resistance effect elements which vary in internal resistance in response to the magnetism of the magnetic poles being provided thereon. The amount of torsion created by the load on the load side of the rotary shaft is measured as a phase difference of outputs of the magnetic sensor, and the torque is detected in terms of the angular difference between the magnetic drums or discs. The device is operative to detect a torque in both storage and rotation, and capable of detection within a period of magnetic signal, whereby high-accuracy, high-resolution torque detection is made possible.

8. 发明专利

DE3760720D1 POWER STEERING APPARATUS AND CONTROL SYSTEM FOR POWER STEERING APPARATUS HAVING A STEERING WHEEL ANGLE DETECTION DEVICE 未知
公开(公告)号：DE3760720D1
公开(公告)日：1989-11-16
申请号：DE3760720
申请日：1987-01-08
申请人： HITACHI LTD
发明人： NOTO YASUO , SUGIURA NOBORU
IPC分类号： B62D6/00 , B62D5/04 , B62D5/06 , B62D6/02 , B62D15/02
摘要： A control system for a power steering apparatus having a steering wheel angle detection device comprising a steering angle sensor (8a, 8c) for generating reference pulses at a plurality of steering wheel angle positions, including a neutral position (N) of a steering wheel, and generating angle pulses (8b, 8d) as the steering wheel is rotated, an up/down counter for counting up or down the angle pulses supplied from the steering angle sensor depending on the direction of rotation of the steering wheel, and a vehicle velocity sensor (10) for detecting the vehicle velocity. When the vehicle velocity detected by the vehicle velocity sensor is higher than a predetermined velocity and a reference pulse is detected by the steering angle sensor which is determined to be a steering wheel straight ahead position then the up/down counter is reset to zero.

9. 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

10. 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.

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