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71. 发明专利

JPH04265445A A/D CONVERTED VALUE CORRECTING METHOD 失效
公开(公告)号：JPH04265445A
公开(公告)日：1992-09-21
申请号：JP2439591
申请日：1991-02-19
申请人： HITACHI LTD
发明人： KIMURA HIROSHI , MASUDA MITSUYASU
IPC分类号： F02D45/00
摘要： PURPOSE:To simply correct analog input signals in a microcomputer device provided with an A/D converter without being affected by the power-supply voltage of an external system. CONSTITUTION:In an electronic control AT control device 1 in Fig.1, analog input signals are simply corrected in a microcomputer 13 by programming processing shown in the flowchart without adding correction circuits, etc., to an input processing unit 3, a low voltage generating unit 9.

72. 发明专利

JPH03106114A OUTPUT TRANSISTOR PROTECTION CIRCUIT AND ON-VEHICLE CONTROLLER PROVIDED WITH THE CIRCUIT 失效
公开(公告)号：JPH03106114A
公开(公告)日：1991-05-02
申请号：JP24211489
申请日：1989-09-20
申请人： HITACHI LTD
发明人： IBAMOTO MASAHIKO , TOKUYAMA KEIICHI , MASUDA MITSUYASU , OIWA HIROYUKI , KIMURA HIROSHI
IPC分类号： H01F7/18 , H03K17/08
摘要： PURPOSE:To protect an output transistor(TR) by disconnecting the output TR immediately after an output current reaches a limit value to evade heat destruction due to overcurrent. CONSTITUTION:A TR 7 for a self holding is provided in addition to a current limiter TR 6 to apply positive feedback to the TR 6. That is, when a current I flowing to the output TR 3 is increased and reaches to a limit, the conduction of the TR 6 is started by a voltage VS caused across a shunt resistor 2. Thus, the collector potential of the TR 6 rises to conduct the self holding TR 7. Since the collector of the self holding TR 7 connects to a base of the current limit TR 6 via a resistor R, the base current of the TR 6 is secured to a sufficiently large value and the output TR 3 transfers to a complete interrupt state. Thus, the heat destruction of the output TR 1 is surely avoided.

73. 发明专利

JPH02246841A CONTROL DEVICE AND METHOD THEREOF FOR AUTOMOBILE 失效
公开(公告)号：JPH02246841A
公开(公告)日：1990-10-02
申请号：JP6374689
申请日：1989-03-17
申请人： HITACHI LTD
发明人： OSUGA MINORU , OYAMA TAKASHIGE , KUROIWA HIROSHI , NOGI TOSHIJI , MINOWA TOSHIMICHI , KIMURA HIROSHI
IPC分类号： B60W10/00 , B60G17/0195 , B60R16/02 , B60R16/03 , B60W10/04 , B60W10/06 , B60W10/10 , B60W10/22 , B60W50/00 , F02D29/00 , F02D45/00 , F16H61/00 , F16H61/02 , F16H61/04 , F16H63/50 , G05B15/02
摘要： PURPOSE:To aim at the high speed performance of control processing by incorporating semantic information generated at a first control means through a transmission path and controlling a second adjusting means for adjusting each control quantity in coordination with a first adjusting means by a second control means on the basis of the incorporates semantic information. CONSTITUTION:The control system of an automobile 1 is provided with leased nodes such as an engine control device 3, a transmission control device 4, a diagnosis device 5, a brake control device 6, a suspension control device 7, a display control device 8 and a navigation control device 9. The data measured and processed by one node are serially transferred to the CPUs of the other plural nodes through a communication bus 10 and all the nodes act in coordination for the same control purpose. The signals or the data in this case are heightened in their precedence compared to the other transferred data and act immediately in coordination by the CPU of the related node in relation to the control generated in succession. The process demanding high speed performance can be thus alotted so as to realize the accuracy and high-speed performance of control.

74. 发明专利

JPH0192820A ELECTRONIC CIRCUIT FOR AUTOMOBILE 失效
公开(公告)号：JPH0192820A
公开(公告)日：1989-04-12
申请号：JP24786987
申请日：1987-10-02
申请人： HITACHI LTD
发明人： TOKUYAMA KEIICHI , MASUDA MITSUYASU , OIWA HIROYUKI , KIMURA HIROSHI , FUKUSHIMA RYUICHIRO
IPC分类号： B60R16/02 , G06F1/00 , G06F15/78
摘要： PURPOSE:To constitute a stable and inexpensive sequence circuit by using a delay circuit consisting of a resistor and a capacitor and a circuit consisting of an inverter IC to constitute the sequence circuit. CONSTITUTION:A constant circuit 1 converts the voltage of battery into 5V constant voltage and supplies the constant voltage to a microcomputer 3 and the sequence circuit 2 outputs signals to the inverse of RES terminal for resetting the microcomputer 3, the inverse of NMI terminal for executing interruption processing and the inverse of STBY terminal for reducing current consumption. After disconnecting an ignition switch 8, a constant voltage circuit 5 outputs small power to the microcomputer 3 and an I/O interface 4 outputs/inputs signals to/from the external through a terminal 7. Since it is unnecessary to use four expensive one-shot multivibrator ICs, the cost of the circuit can be reduced down to about 1/3, the since malfunction due to surge is not generated, a highly reliable circuit constitution can be obtained.

75. 发明专利

JPS63265127A TORQUE SENSOR 失效
公开(公告)号：JPS63265127A
公开(公告)日：1988-11-01
申请号：JP10074187
申请日：1987-04-23
申请人： HITACHI LTD
发明人： NOTO YASUO , SUGIURA NOBORU , NAITO SHOTARO , KIMURA HIROSHI , TAKAHASHI TADASHI
IPC分类号： G01L3/10 , B62D5/04
摘要： PURPOSE:To detect a rotary angle and a rotary torque at the same time without contact, by providing rotary bodies having a plurality of magnetic pole bodies at both ends of a torsion bar, and detecting the relative displacements of both magnetic bodies. CONSTITUTION:A magnetic drum 2 having a plurality of poles comprising an incremental track 3 and a reference track 4 and a magnetic drum 7 having an incremental track 8 are formed at both ends of a torsion bar 5. When the torsion bar 5 is twisted, said magnetic drums 2 and 7 are relatively deviated. The deviation is detected with a magnetoelectric transducer 9. The detected output is guided to a waveform shaping circuit 10 and a differential voltage detecting circuit 11. An operating circuit 16 obtains a rotary angle theta and a torque T based on a pulse signal P and a differential voltage signal VT which are outputted from said circuits 10 and 11.

76. 发明专利

JPS61179508A FORCED COOLING SUPERCONDUCTIVE COIL DEVICE 失效
公开(公告)号：JPS61179508A
公开(公告)日：1986-08-12
申请号：JP1923785
申请日：1985-02-05
申请人： HITACHI LTD
发明人： KURODA KUNISHIGE , HOTTA YOSHITOSHI , KIMURA HIROSHI , HARA NOBUHIRO , KOBAYASHI KOJI
IPC分类号： H01F6/00 , H01F6/04 , H01L39/04
摘要： PURPOSE:To improve the initial cooling efficiency and to enable a superconductive coil to be cooled in a short period and still with a low consumption of liquid helium, by providing a flow control means for controlling the flow rate of the refrigerant flowing through an auxiliary refrigerant flow path and further providing insulation joints for stopping the current supplied by a voltage induced in the auxiliary refrigerant flow path. CONSTITUTION:In the initial cooling stage, most of refrigerant which is introduced from a refrigerant introduction tube 28a and discharged through a refrigerant discharge tube 28b is shunted to a coiled tube 30 having a low flow resistance and cools a superconductive coil 16 through cooling fins 33. When the temperature of the superconductive coil 16 is decreased and the vaporization rate within the superconductor 1 is decreased to lower its flow resistance, the amount of the refrigerant shunted to the coiled tubes 30 is decreased by closing a flow control valve 32 to such an extent that the amount of the refrigerant flowing through the cooling system is not decreased, while the flow rate of the refrigerant flowing through the superconductor 1 is increased. When a temperature as desired is obtained, the shunt of the refrigerant to the coiled tubes 30 is stopped so that all the refrigerant is allowed to flow through the superconductor 1. Electric insulation joints 31a and 31b are inserted between the coiled tube 30 and the refrigerant introduction tube 28a and between the coiled tube 30 and the flow control valve 32, respectively. Therefore, no cyclic current is supplied to the coiled tube 30 by a voltage induced in the coiled tube 30.

77. 发明专利

JPS5984405A CRYOGENIC COOLING EQUIPMENT 失效
公开(公告)号：JPS5984405A
公开(公告)日：1984-05-16
申请号：JP19351382
申请日：1982-11-05
申请人： HITACHI LTD
发明人： HOTSUTA YOSHITOSHI , KIMURA HIROSHI , HARA NOBUHIRO
IPC分类号： H01F6/04 , F25D3/10 , H01L39/04
摘要： PURPOSE:To avoid the damage of a superconductive coil by a method wherein a cooling equipment is composed of a cold box for generating cryogen, a liquid He storag and a cryogenic container in which a superconductive coil is stored and prescribed valves are provided between the storage and the container. CONSTITUTION:High purity He gas, compressed by a compressor 1, is introduced into a cold box 2 and a part of it is turned into liquid He by expansion turbines 4a and 4b. The produced liquid He is led into a He storage 10 through a conveyor tube 9a to be stored as liquid He 11. Then, a part of the liquid He 11 is led into a cryogenic container 18, in which a superconductive coil 19 is stored, through a conveyer tube 12 to cool the coil 19. In this configuration, a manual valve 13b is provided to the conveyer tube 12 and the storage 10 and the container 18 are connected by a connecting tube in which manual valves 14a and 14b for recycling are connected in parallel. With this constitution, when an abnormal voltage detector 22 operates, the valve 14b is opened and at the same time the valve 13b is closed.

78. 发明专利

JPS5745207A Precooler for superconducting magnet 失效
标题翻译：超级磁铁预制器
公开(公告)号：JPS5745207A
公开(公告)日：1982-03-15
申请号：JP11974580
申请日：1980-09-01
申请人： Hitachi Ltd
发明人： TOMEOKU HIROSHI , KIMURA HIROSHI
IPC分类号： H01F6/04 , H01L39/04
摘要： PURPOSE:To reduce temperature rise in a tank of cryostat and to enable complete exhaust of refrigerant of a precooler for superconducting magnet by a method wherein a heater and a temperature measuring element are provided at the tank bottom part of cryostat, and the heater is controlled monitoring existence of the refrigerant by the temperature measuring element. CONSTITUTION:A superconducting magnet 2 is accomodated in the cryostat 1, and a pipe 3 is arranged as to open to the tank bottom part and a pipe 4 as to open to the upper part of the tank. The electric heater 6 is fixed to the tank bottom part, and is connected to a feed control circuit through a lead wire 7, and the temperature measuring part 9 of a thermoelectric couple 8 is fixed to the heater 6. A cold junction 10 of the thermoelectric couple 8 is equipped in a small heat insulating tank 11 as to be submerged in the refrigerant 5 for precooling, and a voltmeter 12 for temperature measurement is connected as to measure the temperature difference between the temperature measuring part 9 and the cold junction 10. Accordingly although the refrigerant 5 for precooling is poured in the tank when precooling is to be performed, and the refrigerant 5 is exhausted after the superconducting magnet is cooled, but when the refrigerant 5 is remained in the tank, because waste of refrigerant is generated, so that the remained refrigerant can be exhausted by making a current to be connected and disconnected from the heater monitoring deflection of the indicator of a voltmeter.
摘要翻译：目的：为了降低低温恒温箱的温度升高，并通过一种方法使超导磁体的预冷器的制冷剂完全排出，其中加热器和温度测量元件设置在低温恒温器的罐底部，并且加热器被控制通过温度测量元件监测制冷剂的存在。构成：超导磁体2被容纳在低温恒温器1中，并且配管3设置成向罐底部开口，而管4打开到罐的上部。电加热器6固定到罐底部，并通过引线7连接到馈电控制电路，热电偶8的温度测量部分9固定在加热器6上。将热电偶8安装在小型绝热罐11中，以浸没在用于预冷却的制冷剂5中，并且连接用于温度测量的电压计12，以测量温度测量部分9和冷接点10之间的温差。因此，虽然在进行预冷却时将用于预冷却的制冷剂5注入罐中，并且在超导磁体被冷却之后制冷剂5被排出，但是当制冷剂5保留在罐中时，由于产生制冷剂的浪费，使得通过使电流与电压表的指示器的加热器监视偏转相连接和断开而使剩余的制冷剂可以被排出。

79. 发明专利

JPS56152212A SUPERCONDUCTIVE COIL 失效
公开(公告)号：JPS56152212A
公开(公告)日：1981-11-25
申请号：JP5539480
申请日：1980-04-28
申请人： JAPAN NATIONAL RAILWAY , HITACHI LTD
发明人： NAKASHIMA HIROSHI , HEKI TOSHIKI , OGATA HISANAO , FUJINAGA TAKAMASA , KIMURA HIROSHI
IPC分类号： H01F6/04 , H01F6/06 , H01L39/04
摘要： PURPOSE:To prevent the temperature rise of a superconductive coil in which a cooling passage is formed at a spool by molding the coil with synthetic resin by enclosing the outer periphery of the cooling passage with a thermal conductor. CONSTITUTION:A superconductive coil 1 is integrally impregnated with synthetic resin such as epoxy resin or the like and is fixed together with a spool 2 surrounding the outer periphery of the coil 1, and a cooling passage 3 is formed at the spool 2. This spool 2 and the passage 3 are formed of high strength member such as stainless steel or the like. A thermal conductor 6 such as an aluminum plate or a copper plate or the like is intimately secured by a welding or a bolt clamping to the outer periphery of the spool 2 and the passage 3. The heat generated from the coil 1 is transmitted to a freezing medium flowing through the passage 3 provided at the spool 2 to cool the coil 1. The heat and electromagnetic wave introduced from the exterior to the coil 1 are absorbed by the thermal conductor 6 and are transmitted to the freezing medium flowing through the passage 3 in the form of the heat to perform cooling.

80. 发明专利

JPS55163709A METHOD OF MANUFACTURING SUPERCONDUCTIVE STABILIZED MEMBER 失效
公开(公告)号：JPS55163709A
公开(公告)日：1980-12-20
申请号：JP7003079
申请日：1979-06-06
申请人： HITACHI LTD , HITACHI CABLE
发明人： TADA NAOFUMI , KIMURA HIROSHI , KAKIZAKI KIMIO , ISHIGAMI YUUJI
IPC分类号： H01B12/02 , H01B12/00 , H01B13/00 , H01L39/06

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