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1. 发明专利

JP2000131088A MOVEMENT ANALYZER FOR MOBILE OBJECT 失效
公开(公告)号：JP2000131088A
公开(公告)日：2000-05-12
申请号：JP30504998
申请日：1998-10-27
申请人： HITACHI LTD
发明人： MINOWA SHIGERU , SUZUKI HIROSHI , SEKIYAMA YOSHIO , ESATO KOJI , NAMIKI YASUYUKI
IPC分类号： G01C21/00 , G01S19/07 , G01S19/23 , G01S19/37 , G01S19/49 , G01S5/14
摘要： PROBLEM TO BE SOLVED: To prevent an error of movement information from increasing even if GPS satellites are switched by comparing GPS movement information with predicted values of GPS movement information calculated one period before and performing filtering based on GPS movement information corrected with the difference thereof. SOLUTION: A GPS receiver 14 operates the position and the speed (referred to GPS movement information) of a mobile object at a positioning coordinate group based on a selected GPS satellite group. If the combination of GPS satellites changes during positioning causing variation in satellite switching information, a GPS movement information correcting section 15 calculates the difference between the GPS movement information and predicted values of GPS movement information calculated when a filter is updated one period before and stores it as a GPS movement information correction value data base 17. The GPS movement information is then corrected with the GPS movement information correction value and delivered to a movement analyzing section 16. Since the corrected GPS movement information is matched apparently with the mobility of a mobile object, subsequent filtering can be sustained stably at a filtering section 19.

2. 发明专利

JPS6153541A Control apparatus of driving testing machine 失效
标题翻译：驱动试验机控制装置
公开(公告)号：JPS6153541A
公开(公告)日：1986-03-17
申请号：JP17408384
申请日：1984-08-23
申请人： Hitachi Ltd
发明人： SEKIYAMA YOSHIO
IPC分类号： G01L3/22 , G01M13/02
CPC分类号： G01M13/025 , G01L3/22
摘要： PURPOSE:To make it possible to obtain a smooth axial torque characteristic equivalent to an engine, by correcting transitional torque at the time of the increase or decrease in a speed due to the difference between the inertia quantities of an engine and a dynamo with good response by applying predetermined control to the dynamo simulating the engine. CONSTITUTION:The imperfect differentiation signal of a dynamo current control signal is outputted from a forcing torque coefficient operator 4b and an imperfect differentiation operator 5b corresponding to the rotary speed N of the dynamo simulating an engine. This output and the difference between the inertia quantities of the dynamo and engine of an inertia quantity operating and setting part 7b are processed by a multiplier 6b to be supplied to an output adder 8b. The imperfect differentiation signal of the current control signal of the load side dynamo coupled with the dynamo through a test body and the multiplied result of the multiplier 3b with the setting part 7b are also supplied to said adder 8b and the transitional torque at the time of the increase or decrease in a speed of the dynamo simultating the engine is corrected with good response by the current control through the adder 8b. As a result, the axial character equivalent to the engine is obtained and the torque test of the test body such as a transmission is performed well.
摘要翻译：目的：为了获得与发动机相当的平滑轴向扭矩特性，通过校正由于发动机的惯性量与具有良好响应的发电机之间的差异而在速度上升或下降时的过渡扭矩通过对模拟发动机的发电机应用预定的控制。构成：发电机电流控制信号的不完美的微分信号从强制转矩系数运算器4b和对应于模拟发动机的发电机的转速N的不完全微分运算器5b输出。该输出和惯性量操作和设定部分7b的发电机和发动机的惯量之差由乘法器6b处理，以提供给输出加法器8b。通过测试体与发电机耦合的负载侧发电机的电流控制信号的不完全微分信号和乘法器3b与设定部分7b的相乘结果也被提供给所述加法器8b和在通过加法器8b的电流控制以良好的响应来校正伴随发动机的发电机的速度的增加或减小。结果，获得与发动机等效的轴向特性，并且良好地进行变速器等试验体的转矩试验。

3. 发明专利

JPS5797386A SPEED CONTROLLING DEVICE FOR INDUCTION MOTOR 失效
公开(公告)号：JPS5797386A
公开(公告)日：1982-06-17
申请号：JP17096680
申请日：1980-12-05
申请人： HITACHI LTD
发明人： KATOU EINOSUKE , SEKIYAMA YOSHIO , YAMAZAWA YUUJI
IPC分类号： H02P23/00 , H02P25/26
摘要： PURPOSE:To control the speed of an induction motor by connecting a resistor in parallel with a liquid resistor when the motor is accelerated at a speed higher than a remaining resistance speed and controlling the resistance value of the parallel resistor in response to the speed command value. CONSTITUTION:When a speed command value Sp becomes larger than a speed (remaining resistance speed) Sp1 that the resistance value of a liquid resistor 2 of an induction motor 1 becomes minimum, a comparator 17A produces an output, a control circuit 19A operates a solenoid switch 18A to close its main contact 18Aa, thereby connecting a resistor 16 in parallel with a liquid resistor 2. Thus, the secondary resistance value of the motor 1 becomes smaller than the remaining resistance value of the resistor 2, the motor 1 is accelerated, but when the motor 1 is accelerated at a speed faster than a command value Sp, the deviation S of a controller 11 becomes negative going, and it accordingly, closes a reverse contact 11a2. In this manner, a control motor 4 is reversely rotated, the distance between the electrodes of the resistor 2 is increased to increase the resistance value, and the motor 1 is controlled to become the command value Sp.

4. 发明专利

JPS5594590A CONSTANTTOUTPUT CONTROL MEANS FOR DC MOTOR 失效
公开(公告)号：JPS5594590A
公开(公告)日：1980-07-18
申请号：JP65879
申请日：1979-01-10
申请人： HITACHI LTD
发明人： SEKIYAMA YOSHIO
IPC分类号： H02P29/00 , H02P7/298
摘要： PURPOSE:To perform constant output control precisely by increasing the field current in response to a speed and a load current and by compensating the decrease in main magnetic fluxes due to demagnetizing action. CONSTITUTION:In the case the constant output control of a DC motor 1 is performed, the speed control is achieved by the speed-feedback value from a speed generator 3, and the current feedback value from a current sensor 5 by a speed control circuit 8 and a current control circuit 7 based on the speed-command value specified by a speed setting adjuster 9. The sensed value of an armature-voltage sensor 6 and the command value specified by a field-voltage setting adjuster 14 are correlated, and the field current is controlled so that the armature voltage becomes constant. Said field current control is performed by a field control circuit 12 depending on the sensed value of the field current sensor 11. The actual value of the armature current and the actual value of the speed are input to a field compensation circuit 18 from the sensor 5 and the speed generator 3, respectively. The current command value of the field control circuit 12 is compensated by the output of the operation in the field compensation circuit 18, thereby the constant output control can be precisely performed.

5. 发明专利

JPS5290019A OVERRLOAD PROTECTING SYSTEM 失效
公开(公告)号：JPS5290019A
公开(公告)日：1977-07-28
申请号：JP677576
申请日：1976-01-23
申请人： HITACHI LTD
发明人： SEKIYAMA YOSHIO , ODAGIRI WATARU , TAGAMI HIDEO
IPC分类号： H02H7/08 , H02P7/292
摘要： PURPOSE:To obtain an over-load protecting system having an excellent compatibility by sequentially varying a protective characteristic curve and also sequentially varying a switching point between a counter timing and instaneous characteristics.

6. 发明专利

JPS5233070A SYSTEM FOR ASSEMBLING PRINTED CIRCUIT BOARD 失效
公开(公告)号：JPS5233070A
公开(公告)日：1977-03-12
申请号：JP10889375
申请日：1975-09-10
申请人： HITACHI LTD
发明人： SEKIYAMA YOSHIO
IPC分类号： H01R13/00 , H05K1/14 , H05K7/02 , H05K7/14

7. 发明专利

JPS6258131A CONTROL DEVICE OF TRANSMISSION DRIVING APPARATUS FOR AUTOMOBILE 失效
公开(公告)号：JPS6258131A
公开(公告)日：1987-03-13
申请号：JP19783785
申请日：1985-09-09
申请人： HITACHI LTD
发明人： SEKIYAMA YOSHIO
IPC分类号： G01M13/02
摘要： PURPOSE:To make it possible to stably perform a wide range of operational control while operation is continued, by altering the control constant of an automatic control system corresponding to the change in the moment of inertia being the constant of a load side. CONSTITUTION:The differentiation circuit 11 of a control apparatus differentiates the rotational speed detection signal of the drive shaft of an electromotor to obtain an acceleration signal and an acceleration torque operation circuit 16 obtains the torque change signal at the time of transition from the load current detection signal of the electromotor. A setting circuit 13 stepwise and preliminarily calculates all of the moments of torque changing by the transmission ratio of a transmission to set said value as dummy moment of inertia. A divider circuit 12 divides the output of the operation circuit 16 by the output of the differentiation circuit 11 and a filter circuit 14 calculates the moment IC of inertia of an actual value corresponding to the output signal of the circuit 12 to input the same to the circuit 13. The output IL' of dummy moment of inertial corresponding to the actual value of the circuit 13 is converted to output Gn' on the basis of the constant KC determined by an operational amplifier 15. This value is replaced with Gn' as the stabilizing constant of an automatic control system to continue a stable operation.

8. 发明专利

JPS61224899A CONTROLLER OF PWM INVERTER 失效
公开(公告)号：JPS61224899A
公开(公告)日：1986-10-06
申请号：JP6364285
申请日：1985-03-29
申请人： HITACHI LTD
发明人： SEKIYAMA YOSHIO
IPC分类号： H02P27/08 , H02P27/10
摘要： PURPOSE:To reduce a ripple of a torque generated in an AC motor in a low speed range by reducing the hysteresis width proportional to a speed signal when a torque comes to the prescribed value in a low speed range. CONSTITUTION:When a load current signal I becomes a set signal or lower decided by a torque setter 90 and an output relay 94 is turned ON, the output N of an operational amplifier 80 is applied through a contact 94a to a function generator 84. The generator 84 inputs a speed signal N, and generates an output signal DELTAh inversely proportional to the signal N. The constant hysteresis signal DELTAh by a hysteresis width setter 95 and the output signal DELTAh of the generator 84 are used as correction signal to be compared by the amplifier 85 to obtain the difference signal as a hysteresis width DELTAH.

9. 发明专利

JPS60148392A ROTATION CONTROLLER OF MOTOR 失效
公开(公告)号：JPS60148392A
公开(公告)日：1985-08-05
申请号：JP302384
申请日：1984-01-11
申请人： HITACHI LTD
发明人： SEKIYAMA YOSHIO
IPC分类号： H02P29/00
摘要： PURPOSE:To obtain stable characteristics with a simple construction by extracting vibration component corresponding to the resonance angular frequency of a rotary machine from the variation in the torque and controlling the gate of a controller on the basis of the frequency and the amplitude of the component. CONSTITUTION:A current control system for a motor feeds back a current control element 8 through a current feedback element 9 so that a drive current becomes constant to a drive system having a motor constant element 4, motor torque coefficient elements 5, 6 and a machine inertia efficiency element 7, and applies it to a voltage application element 10. A drive current is detected from the output point of the element 4, and a correction coefficient signal is fed back to a gain calculator 11 inserted between a speed control element 3 and a current control element 8 through a compensator. The compensator obtains a correction coefficient by the frequency and the amplitude of the vibration component due to the resonance of a general drive system.

10. 发明专利

JPS59156160A Thyristor converter 失效
标题翻译： THYRISTOR转换器
公开(公告)号：JPS59156160A
公开(公告)日：1984-09-05
申请号：JP2762083
申请日：1983-02-23
申请人： Hitachi Ltd
发明人： SEKIYAMA YOSHIO
IPC分类号： H01L23/467 , H02M7/04
CPC分类号： H02M7/04
摘要： PURPOSE:To reduce the number of components, to reduce the size and cost and to simplify a thyristor converter by using a cooling fin as a conducting terminal of one side pole of a thyristor element. CONSTITUTION:A cathode of a thyristor element 7 is threaded with a cooling fin 14, and a cathode of a thyristor element 1 is threaded with a cooling fin 15. On the other hand, anode side leads of the thyristor elements 1, 7 are mounted on the opposite side cooling fins, and electrically connected directly by screws 1', 7', respectively. In this manner, the elements 1, 7 are thermally and electrically connected.
摘要翻译：目的：通过使用散热片作为晶闸管元件的一个侧极的导电端子，减少元件数量，减小尺寸和成本，简化晶闸管转换器。构成：晶闸管元件7的阴极与冷却翅片14螺纹连接，并且可控硅元件1的阴极与冷却翅片15螺纹连接。另一方面，可控硅元件1,7的阳极侧引线被安装在相对侧的散热片上，分别由螺钉1'，7'直接电连接。以这种方式，元件1,7被热电连接。

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