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1. 发明专利

JP2004112898A Control method and device for motor in position sensorless 有权
公开(公告)号：JP2004112898A
公开(公告)日：2004-04-08
申请号：JP2002270968
申请日：2002-09-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KANEKO SATORU , MASAKI RYOZO , SAWADA TAKEFUMI
IPC分类号： H02P6/18 , H02P6/16 , H02P21/00 , H02P21/14 , H02P27/04
CPC分类号： H02P21/16
摘要： PROBLEM TO BE SOLVED: To provide a control device for motor in position sensorless having a means capable of estimating the accurate position of a rotor even if the estimation of the position of the rotor is difficult when a magnetic saturation locally occurs by a large current. SOLUTION: The control device is provided with an AC motor 2 having saliency, a PWM (pulse width modulation) inverter 3 that applies a voltage to the AV motor 2, and a controller 1 that controls the PWM inverter 3 by a PWM signal. The controller 1 is provided with a position estimation means 11 that detects motor inductance in a prescribed direction relative to the direction of a current vector flowing to the AC motor 2, and estimates the position of the rotor of the AC motor based on the motor inductance. COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2004032908A Motor controller 有权
公开(公告)号：JP2004032908A
公开(公告)日：2004-01-29
申请号：JP2002185825
申请日：2002-06-26
申请人： Hitachi Ltd , Nissan Motor Co Ltd , 日産自動車株式会社 , 株式会社日立製作所
发明人： NAGAYAMA KAZUTOSHI , MASAKI RYOZO , KANEKO SATORU , SAWADA TAKEFUMI
IPC分类号： H02P25/08 , H02P6/08 , H02P21/00 , H02P27/04
摘要： PROBLEM TO BE SOLVED: To reduce high-frequency noise at low speed or stoppage of an AC motor. SOLUTION: This motor controller detects the magnetic pole position of an AC motor, based on the AC current flowing to the AC motor and also detects the rotational speed of the AC motor, based on the change of the magnetic pole position. Furthermore, this generates a voltage for detection of the magnetic pole position for one cycle of carrier, whose half cycle is a positive rectangular wave and whose next half cycle is a negative rectangular wave, and also changes the superposition interval of the voltage for detection of magnetic pole position, according to the rotational speed of the AC motor, and superposes the voltage for detection of magnetic pole position to a d-axis voltage command value. COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2004023920A Ac motor controller 审中-公开
公开(公告)号：JP2004023920A
公开(公告)日：2004-01-22
申请号：JP2002177160
申请日：2002-06-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MASAKI RYOZO , KANEKO SATORU , SAWADA TAKEFUMI
IPC分类号： H02P6/08 , H02P21/00 , H02P27/04 , H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide an AC motor controller which can quickly suppress torque pulsation when performing the drive by the rectangular wave voltage of 180° switching-on. SOLUTION: The phase currents iu, iv, and iw of a synchronous motor 1 driven by an inverter 3 are detected by a current detector 10 and are given to an offset current part 11. The offset current part 11 gets the offset current value of a three-phase AC motor to which the rectangular wave voltage of 180°switching-on of each phase is applied. A switch selector 9 negates the offset current by controlling the inverter 3 so as to change the switching-on range of the positive voltage and the negative voltage of the rectangular wave voltage, based on the offset current value. COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2003285657A Transmission device, vehicle and bicycle using the same 审中-公开
标题翻译：传动装置，车辆和使用它的自行车
公开(公告)号：JP2003285657A
公开(公告)日：2003-10-07
申请号：JP2003031840
申请日：2003-02-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MASAKI RYOZO
IPC分类号： B60K6/365 , B60K6/445 , B60K17/04 , B60L11/14 , B60L15/20 , B62M6/45 , B62M6/55 , F16H3/44 , F16H3/72 , B60K6/04 , B62M23/02
CPC分类号： B60L3/0092 , B60L11/14 , B60L2200/12 , B60L2200/26 , B62M6/55 , B62M11/145 , B62M11/18 , Y02T10/70 , Y02T10/7077 , Y02T10/7258
摘要： PROBLEM TO BE SOLVED: To make always a high system efficiency including a prime mover and a transmission device in which the transmission device has a motor for use in converting an input energy into the most-suitable output energy and a differential mechanism. SOLUTION: This transmission device has a plurality of differential mechanisms 4, 6 having each of an input shaft and an output shaft as a common shaft, respectively. At least one differential mechanism of the plurality of differential mechanisms controls a difference in the number of rotation of each of the input shaft and the output shaft by a first motor 8 and similarly at least the differential mechanism controls a torque by a second motor 9. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了始终具有高的系统效率，包括原动机和传动装置，其中传动装置具有用于将输入能量转换成最合适的输出能量的电动机和差速机构。解决方案：该传动装置具有分别具有作为公共轴的输入轴和输出轴各自的多个差动机构4,6。多个差速机构中的至少一个差速机构通过第一马达8控制输入轴和输出轴的旋转数差异，同样至少差速机构通过第二马达9来控制转矩。版权所有（C）2004，JPO

5. 发明专利

JP2003054273A Power transmission device of automobile 有权
标题翻译：汽车动力传动装置
公开(公告)号：JP2003054273A
公开(公告)日：2003-02-26
申请号：JP2002131369
申请日：2002-05-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MINOWA TOSHIMICHI , MASAKI RYOZO , INNAMI TOSHIYUKI , KADOMUKAI YUZO
IPC分类号： B60K6/387 , B60K6/44 , B60K6/442 , B60K6/547 , B60K17/04 , B60L11/14 , B60W10/02 , B60W10/06 , B60W10/08 , B60W20/00 , F02D29/02 , F16D28/00 , F16D48/06 , B60K6/04
CPC分类号： Y02T10/6286 , Y02T10/7077 , Y02T10/76
摘要： PROBLEM TO BE SOLVED: To avoid loss of inertial torque of a generator in a hybrid car provided with an engine, a motor and the generator. SOLUTION: In a power transmission device of an automobile provided with the engine 1, the generator 15 driven by output of the engine 1, and a motor 29 driven by power output of the generator 15 and discharge output of a battery 47, a clutch mechanism 23 is provided between an output shaft of the engine 1 and an output shaft of the generator 15. By this, occurrence of inertial torque of the generator can be restricted. Thus, correction of the inertia torque due to the engine or the motor becomes unnecessary, and a fuel cost can be drastically reduced at acceleration of the vehicle.
摘要翻译：要解决的问题：为了避免设置有发动机，电动机和发电机的混合动力汽车中的发电机的惯性力矩的损失。解决方案：在设置有发动机1的汽车的动力传递装置中，由发动机1的输出驱动的发电机15和由发电机15的动力输出驱动的电动机29和电池47的排出口，离合器机构 23设置在发动机1的输出轴与发电机15的输出轴之间。由此，能够限制发电机的惯性转矩的产生。因此，不需要对发动机或电动机造成的惯性转矩的校正，并且在车辆的加速下能够显着降低燃料成本。

6. 发明专利

JP2002315386A CONTROLLER OF MOTOR 失效
公开(公告)号：JP2002315386A
公开(公告)日：2002-10-25
申请号：JP2001112137
申请日：2001-04-11
申请人： HITACHI LTD
发明人： KANEKO SATORU , MASAKI RYOZO , MOROOKA YASUO , MOTOBE MITSUSACHI , KATAYAMA HIROSHI
IPC分类号： B60L9/18 , B60K6/20 , B60K6/44 , B60K6/52 , B60L50/16 , B60W10/08 , B60W20/00 , H02P6/12 , H02P6/18 , H02P21/00 , H02P21/14 , H02P23/00 , H02P27/04 , H02P27/06 , B60L11/14 , H02P7/36 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide a controller of motor in which the rotor pole position of the motor can be estimated with high response, high accuracy and high efficiency over the entire operating region of the motor. SOLUTION: The controller 4 for controlling a voltage, applied from an inverter 3 to a synchronous motor 1 by a PWM signal comprises means 9 for estimating the pole position, based on a current detection value of the synchronous motor 1 detected in synchronism with a PWM carrier, a pole position estimating means 10 for utilizing the equal potential state of the synchronous motor 1, and a pole position switching means 20 for switching the two types of pole position estimating means.

7. 发明专利

JP2001245499A MOTOR CONTROL APPARATUS AND CONTROL APPARATUS OF ELECTRIC ROLLING STOCK 失效
公开(公告)号：JP2001245499A
公开(公告)日：2001-09-07
申请号：JP2000056047
申请日：2000-02-28
申请人： HITACHI LTD
发明人： MASAKI RYOZO , SAKURAI YOSHIMI , AMANO MASAHIKO , MOROOKA YASUO
IPC分类号： B60L9/18 , H02P21/00 , H02P21/14 , H02P21/16 , H02P21/18 , H02P21/22 , H02P21/24 , H02P23/14 , H02P23/16 , H02P23/18 , H02P27/04 , H02P27/08 , H02P29/00 , H02P5/00 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide a current control apparatus capable of reducing a load factor of a microprocessor software while securing responsiveness of the current control in an alternating current(AC) loading device such as a motor. SOLUTION: In this arrangement, there are provided with a power converter which applies a voltage to an AC motor and the control apparatus which calculates a voltage instruction value for applying with use of a real current of the AC motor and a current instruction value. The control apparatus has a current control section and a pulse voltage calculation section, and the current control section calculates the alternating voltage instruction value to give a stationary electric current with use of a difference between the current instruction value and the real current, therefore, the pulse voltage instruction value to suppress a generated transient current is calculated in the pulse voltage calculation section. By controlling the power converter with use of the additional value of this both as the voltage instruction value, the alternating voltage instruction value can control the current flowing in the motor to be the current instruction value in a short time, because, in a stationary state, the current of the motor matches with the current instruction value and the compensation current generated by the pulse voltage instruction value cancels the transient current.

8. 发明专利

JP2001211698A SYNCHRONOUS MOTOR CONTROLLER 失效
公开(公告)号：JP2001211698A
公开(公告)日：2001-08-03
申请号：JP2000014250
申请日：2000-01-20
申请人： HITACHI LTD
发明人： OBARA SANSHIRO , MASAKI RYOZO , KANEKO SATORU
IPC分类号： B60L9/18 , H02P21/00 , H02P21/05 , H02P21/14 , H02P21/18 , H02P21/22 , H02P21/24 , H02P23/04 , H02P23/14 , H02P25/08 , H02P27/04 , H02P27/08 , H02P29/00 , H02P5/00 , H02P5/05
摘要： PROBLEM TO BE SOLVED: To provide a controller and a controlling method for compensating a phase error in a rotation sensor over the entire operational range of a synchronous machine. SOLUTION: This controller which controls an inverter and is used for an electric rolling stock is provided with a current command generating part for generating a d-axis current command and a q-axis current command, a phase computing part for computing a phase θand speed N used for coordinate transformation based on the output of the rotation sensor, a current control part for calculating d, q-axis voltage command values Vs, Vq based on the d, q-axis current commands and the detected value of the d, q-axis currents from synchronous motor current, a coordinate transforming part for coordinate-transforming the d, q-axis voltage command values Vd, Vq to compute AC voltage command values Vur, Vvr, Vwr, and a PWM signal generating part for generating a drive signal of the inverter based on the AC voltage command value. Further, the controller involves a phase compensating part which compensates the output of the rotation sensor, and the phase compensating art compensates a phase angle θ0 computed by the rotation sensor at the phase computing part using a magnetic pole phase estimated value θc computed based on a synchronous signal of motor current and a PWM signal at a magnet pole phase computing part.

9. 发明专利

JP2001190008A ELECTRIC CAR 失效
公开(公告)号：JP2001190008A
公开(公告)日：2001-07-10
申请号：JP2000333522
申请日：2000-10-27
申请人： HITACHI LTD
发明人： TAKAMOTO YUSUKE , MASAKI RYOZO , OBARA SANSHIRO , KANEKO SATORU
IPC分类号： B60L15/20 , B60L7/00 , B60L11/18
摘要： PROBLEM TO BE SOLVED: To provide an electric car controller for performing position control which makes it possible to stop and keep the car at its stop position quietly without causing the car to vibrate, even if its driver does not step on its brake pedal. SOLUTION: A control circuit 6 for an electric car 1 is composed of a speed/ torque command generating circuit 10, a position control selecting circuit 11, a position command generating circuit 12, and a motor control circuit 13. The control of a motor 3 is switched from its speed or torque control over to position control, when the car stops. Consequently, it is possible for the car to become stationary at its stop position without moving forwards or backwards, even if a driver releases its braking force generated by a brake after the car stops. Besides, the car runs by a specified distance automatically by a driver's simple command issued while the car stops by the position control, and becomes stationary at the position.

10. 发明专利

JP2000018069A ELECTRONIC THROTTLE CONTROL DEVICE 失效
公开(公告)号：JP2000018069A
公开(公告)日：2000-01-18
申请号：JP18855698
申请日：1998-07-03
申请人： HITACHI LTD
发明人： MARUMOTO KATSUJI , HOSHINO MASATOSHI , MASAKI RYOZO , OSUGA MINORU , WATABE MITSURU
IPC分类号： F02D11/10 , F02D41/20 , F02D45/00 , H02P7/03 , H02P7/29 , H02P7/291
摘要： PROBLEM TO BE SOLVED: To provide an electronic throttle device at low cost using a low-priced microcomputer by generating a current command on the basis of an opening command and an opening feed back signal, and varying a PWM control signal by the current command and a motor current feed back signal so as to control motor current. SOLUTION: In an opening control system 13 of a microcomputer, an opening control calculation is carried out on the basis of an inputted throttle opening command and a throttle opening signal from an opening sensor 3, and a current command is outputted to an analog current control system 5. In the current control system 5, a deviation between the inputted current command and a motor current value detected by a motor current detecting unit 51 is found out, current is controlled, and a PWM signal is outputted to a H-bridge chopper 7. By the H-bridge chopper 1, chopper operation is carried out by the PWM signal and a valve opening/closing direction driving signal from an opening/ closing direction driving unit 15, a motor 8 installed in a throttle body 10 is driven, and an opening of a throttle valve 103 is controlled.

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