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1. 发明专利

AU5362700A Control apparatus of electric vehicle 未知
公开(公告)号：AU5362700A
公开(公告)日：2001-09-13
申请号：AU5362700
申请日：2000-08-24
申请人： HITACHI LTD
发明人： SHIMADA MOTOMI , KOJIMA TETSUO , NAKATA KIYOSHI , TOYOTA EIICHI , SEKIZAWA TOSHIHIKO
IPC分类号： B60L7/14 , B60L7/16 , B60L7/26 , B60L9/18 , B60L7/18 , B60L15/20 , H02P7/63
摘要： To determine the timing of the electrical brake for completely stopping in electrical braking control, and also to achieve both sure stopping and good riding comfort in an electric vehicle powered by the motor by decreasing the braking force at a prescribed rate of change, the torque of the electric motor is controlled by controlling the power converter which powers the motor using a power converter controller. The deceleration of the motor is computed based on the detected speed of the electric motor which is as an output of the speed detection means, the subsequent speed of the electric motor is estimated based on the detected speed and the deceleration rate of the electric motor at the time the detected rotational speed of the electric motor falls below a prescribed speed, and torque control is carried out using an electric power converter controller, based on the estimated speed.

2. 发明专利

DE68918709D1 未知
公开(公告)号：DE68918709D1
公开(公告)日：1994-11-17
申请号：DE68918709
申请日：1989-01-04
申请人： HITACHI LTD
发明人： SEKIZAWA TOSHIHIKO , MATSUMURA HIROYUKI , YASUDA MAKOTO
IPC分类号： B60L9/18 , B60L13/03 , B60L15/00
摘要： A PWM (pulse width modulation) inverter (5) generating an a.c. output having a variable voltage and a variable frequency supplies a.c. power to linear induction motors (61 to 64). An electric car supported by wheels (8) is driven by a driving torque produced by the linear induction motors. While the electric car is running, the motor torque varies due to various factors among which a variation of the air gap length is representative. The power factor cos phi of the PWM inverter is detected to calculate the motor torque, and the output voltage of the PWM inverter is regulated or mechanical brakes (9) are controlled so as to compensate the torque variation. Thus, the variation of the air gap length, which is representative of the factors giving rise to torque variations and which has been difficult to be detected, can be reliably detected to permit torque control according to the torque variation of the linear induction motors (61 to 64).

3. 发明专利

BR8806691A 未知
公开(公告)号：BR8806691A
公开(公告)日：1989-08-29
申请号：BR8806691
申请日：1988-12-16
申请人： HITACHI LTD
发明人： SEKIZAWA TOSHIHIKO , MORI KINJI , ORIMO MASAYUKI , KAWANO YASUO , KOIZUMI MINORU , NAKAI KOZO , KASASHIMA HIROKAZU
IPC分类号： G06F15/16 , G06F11/00 , G06F15/173 , G06F15/177 , G06F15/00
摘要： Programs in a plurality of processors connected through a common network are started when a plurality of data necessary for starting the program are received from the network. When the processor receives data from an external equipment, it adds the event number to the data and sends it to the network, and each processor determines whether all data necessary for starting the program in itself have been received and checks the relation among the received data by comparison with the event numbers of the received data.

4. 发明专利

AU748971B2 Control apparatus of electric vehicle 未知
公开(公告)号：AU748971B2
公开(公告)日：2002-06-13
申请号：AU5362700
申请日：2000-08-24
申请人： HITACHI LTD
发明人： SHIMADA MOTOMI , KOJIMA TETSUO , NAKATA KIYOSHI , TOYOTA EIICHI , SEKIZAWA TOSHIHIKO
IPC分类号： B60L7/14 , B60L7/16 , B60L7/26 , B60L9/18 , B60L7/18 , B60L15/20 , H02P7/63
摘要： To determine the timing of the electrical brake for completely stopping in electrical braking control, and also to achieve both sure stopping and good riding comfort in an electric vehicle powered by the motor by decreasing the braking force at a prescribed rate of change, the torque of the electric motor is controlled by controlling the power converter which powers the motor using a power converter controller. The deceleration of the motor is computed based on the detected speed of the electric motor which is as an output of the speed detection means, the subsequent speed of the electric motor is estimated based on the detected speed and the deceleration rate of the electric motor at the time the detected rotational speed of the electric motor falls below a prescribed speed, and torque control is carried out using an electric power converter controller, based on the estimated speed.

5. 发明专利

DE3902488C2 未知
公开(公告)号：DE3902488C2
公开(公告)日：1994-08-18
申请号：DE3902488
申请日：1989-01-27
申请人： HITACHI LTD
发明人： SEKIZAWA TOSHIHIKO , MORI KINJI , SUZUKI YASUO , ORIMO MASAYUKI , KAWANO KATSUMI , KOIZUMI MINORU , NAKAI KOZO , KASASHIMA HIROKAZU
IPC分类号： G06F9/445 , G06F15/173 , G06F15/177 , G06F15/16 , G06F9/46
摘要： In a distributed processing system wherein a plurality of processors are connected through a network and wherein programs are transmitted among the processors; each of the processors monitors the status of a program in the processor or the load status of any other of the processors as indicated by a message on the network. Upon performance of a judgement operator, the processor broadcasts a message indicative of the status of the processor or a program with a content indicating code affixed thereto, to another network, and the processor having received the message broadcasts a program existent in the other processor to the network along with the code indicative of the content of the program. The broadcast is performed in the other processor in accordance with the load statuses of the processors, and upon judging the content of the received message. Each processor judges whether or not the program being broadcast corresponds to a function necessary for a process of the processor based on the code indicative of the content of the program. If the program is needed, the processor loads and executes the program.

6. 发明专利

DE3902488A1 Device for decentralised data processing, and method of loading programs for it 未知
公开(公告)号：DE3902488A1
公开(公告)日：1989-08-10
申请号：DE3902488
申请日：1989-01-27
申请人： HITACHI LTD
发明人： SEKIZAWA TOSHIHIKO , MORI KINJI , SUZUKI YASUO , ORIMO MASAYUKI , KAWANO KATSUMI , KOIZUMI MINORU , NAKAI KOZO , KASASHIMA HIROKAZU
IPC分类号： G06F9/445 , G06F15/173 , G06F15/177
摘要： In a decentralised data processing system, in which a number of processors (101 to 108) are connected via a network, and in which programs can be exchanged among the processors, each of the processors monitors the state of its own programs, and the load on the other processors, as it is shown by a message (1) on the network, and according to its assessment outputs a message (2), which gives its own state, or contains a program with a content which is shown by a code in a received message. The processor which receives the message transmits a program which is held in it according to the program content code, corresponding to the load on the processors, etc., and the assessment of the content of the received message. Each processor determines whether it needs a transmitted program, and loads and executes the program if required.

7. 发明专利

ZA200004552B Control apparatus of electric vehicle. 未知
公开(公告)号：ZA200004552B
公开(公告)日：2001-03-20
申请号：ZA200004552
申请日：2000-08-31
申请人： HITACHI LTD
发明人： SHIMADA MOTOMI , KOJIMA TETSUO , NAKATA KIYOSHI , TOYOTA EIICHI , SEKIZAWA TOSHIHIKO
IPC分类号： B60L7/16 , B60L7/14 , B60L7/26 , B60L9/18 , B60L
摘要： To determine the timing of the electrical brake for completely stopping in electrical braking control, and also to achieve both sure stopping and good riding comfort in an electric vehicle powered by the motor by decreasing the braking force at a prescribed rate of change, the torque of the electric motor is controlled by controlling the power converter which powers the motor using a power converter controller. The deceleration of the motor is computed based on the detected speed of the electric motor which is as an output of the speed detection means, the subsequent speed of the electric motor is estimated based on the detected speed and the deceleration rate of the electric motor at the time the detected rotational speed of the electric motor falls below a prescribed speed, and torque control is carried out using an electric power converter controller, based on the estimated speed.

8. 发明专利

CA1336014C APPARATUS AND METHOD FOR CONTROLLING ELECTRIC CAR 未知
公开(公告)号：CA1336014C
公开(公告)日：1995-06-20
申请号：CA587604
申请日：1989-01-05
申请人： HITACHI LTD
发明人： SEKIZAWA TOSHIHIKO , MATSUMURA HIROYUKI , YASUDA MAKOTO
IPC分类号： B60L9/18 , B60L13/03 , B60L15/00
摘要： A PWM (pulse width modulation) inverter generating an a.c. output having a variable voltage and a variable frequency supplies a.c. power to a linear induction motor. An electric car supported by wheels is driven by a driving torque produced by the linear induction motor. While the electric car is running, the motor torque varies due to various factors among which a variation of the air gap length is representative. The power factor cos .PHI. of the PWM inverter is detected to calculate the motor torque, and the output voltage of the PWM inverter is regulated or mechanical brakes are controlled so as to compensate the torque variation. Thus, the variation of the air gap length, which is representative of the factors giving rise to torque variations and which has been difficult to be detected, can be reliably detected to permit torque control according to the torque variation of the linear induction motor.

9. 发明专利

IN171481B A DISTRIBUTED PROCESSING SYSTEM 未知
公开(公告)号：IN171481B
公开(公告)日：1992-10-31
申请号：IN1012CA1988
申请日：1988-12-07
申请人： HITACHI LTD
发明人： SEKIZAWA TOSHIHIKO , MORI KINJI , ORIMO MASAYUKI , SUZUKI YASUO , KAWANQ KATSUMI , KOIZUMI MINORU , NAKAI KOZO , KASASHIMA HIROKAZU
IPC分类号： G06F15/16 , G06F11/00 , G06F15/173 , G06F15/177 , G06F15/10
摘要： Programs in a plurality of processors connected through a common network are started when a plurality of data necessary for starting the program are received from the network. When the processor receives data from an external equipment, it adds the event number to the data and sends it to the network, and each processor determines whether all data necessary for starting the program in itself have been received and checks the relation among the received data by comparison with the event numbers of the received data.

10. 发明专利

DE3842286A1 Method of processing data in a distributed processing system 未知
公开(公告)号：DE3842286A1
公开(公告)日：1989-06-29
申请号：DE3842286
申请日：1988-12-15
申请人： HITACHI LTD
发明人： SEKIZAWA TOSHIHIKO , MORI KINJI , ORIMO MASAYUKI , SUZUKI YASUO , KAWANO KATSUMI , KOIZUMI MINORU , NAKAI KOZO , KASASHIMA HIROKAZU
IPC分类号： G06F15/16 , G06F11/00 , G06F15/173 , G06F15/177
摘要： Programs within a number of processors (101 to 108), which are connected to each other in a distributed processing system, are started when a number of data sets is present. If a processor receives data from external equipment (161), it stores data with an event number which is assigned to the input data on the basis of the content code (CC), and determines, by comparison with the event number in a buffer of the processor, whether a predefined number of data items with event numbers has been received.

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