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1. 发明专利

JPS61295888A CONTROLLER OF INDUCTION MOTOR 失效
公开(公告)号：JPS61295888A
公开(公告)日：1986-12-26
申请号：JP13537585
申请日：1985-06-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITA HIROBUMI
IPC分类号： H02P21/00 , H02P23/07 , H02P23/08 , H02P23/16 , H02P27/04
摘要： PURPOSE:To accurately and finely control a vector with high reliability by providing two temperature switches having different operating temperatures. CONSTITUTION:A temperature switch 10 corrects a temperature to be disposed in an induction motor 3, and operates at lower temperature than a temperature switch 8 for preventing it from overheating. The ON/OFF signal of the switch 10 is input to a high/low temperature discriminator 9, and transmitted through the discriminator 9 to the secondary resistance value converter 11 to select the secondary resistance value used to calculate a vector of a vector calculator 6. The motor is prevented from overheating by ON/OFF signal of the switch 8 having high operating temperature.

2. 发明专利

JPH02114879A CONTROLLER FOR SPINDLE MOTOR 失效
公开(公告)号：JPH02114879A
公开(公告)日：1990-04-26
申请号：JP26770188
申请日：1988-10-24
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITA HIROBUMI
IPC分类号： H02P29/00 , H02P21/04 , H02P21/05 , H02P23/00 , H02P23/03 , H02P23/04 , H02P23/16
摘要： PURPOSE:To improve the capacity of speed detection by installing two kinds of speed detectors having different resolution, a changeover switch selecting either one of these speed detectors and a speed detector computing motor speed corresponding to the resolution of the speed detector selected by the changeover switch. CONSTITUTION:Two kinds of speed detectors 5a, 5b of a speed detector 5a being used at the time of intermediate and low speed revolution and having normal resolution and a speed detector 5b being employed at the time of high speed revolution and having low resolution, changeover switches 9a, 9b selecting either one of these speed detectors 5a, 5b and a speed detector 7a computing motor speed corresponding to the resolution of the speed detector selected by the changeover switches 9a, 9b are mounted. Consequently, when a spindle motor 4 is operated, motor speed is controlled by using the speed detector having normal resolution when the motor is worked in intermediate and low speed revolution regions, and the speed detector is changed over to the speed detector having low resolution and motor speed is controlled when the motor is operated in a high speed revolution region. Accordingly, a controller controlling speed within a wide range with high accuracy and having excellent noise resistance can be acquired.

3. 发明专利

JPS6212394A CONTROLLER OF INDUCTION MOTOR 失效
公开(公告)号：JPS6212394A
公开(公告)日：1987-01-21
申请号：JP14711385
申请日：1985-07-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITA HIROBUMI
IPC分类号： H02P21/00 , H02P21/22 , H02P21/36 , H02P23/07 , H02P23/08 , H02P23/16 , H02P23/20 , H02P27/04 , H02P27/08
摘要： PURPOSE:To correct the variation of the secondary resistance value due to temperature without special device by correcting the variation of the resistance on the basis of a saturation detection signal of a torque current command. CONSTITUTION:The secondary resistance corrector 15 corrects the secondary resistance value on the basis of a deviation between a command output P from a vector calculator 10 and the output P1 of an inverter output detector 14. A saturation detector 16 detects the saturation of a torque current iqs to take the timing of correction. That is, only when the torque current iqs is saturated, the corrector 15 is operated to correct the resistance of the calculator 10 on the basis of it.

4. 发明专利

JPH0584156B2 失效
公开(公告)号：JPH0584156B2
公开(公告)日：1993-12-01
申请号：JP14711385
申请日：1985-07-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITA HIROBUMI
IPC分类号： H02P21/00 , H02P21/22 , H02P21/36 , H02P23/07 , H02P23/08 , H02P23/16 , H02P23/20 , H02P27/04 , H02P27/08 , H02P5/408

5. 发明专利

JPH05189049A STOP CONTROLLER FOR ELECTRIC MOTOR 失效
公开(公告)号：JPH05189049A
公开(公告)日：1993-07-30
申请号：JP298492
申请日：1992-01-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITA HIROBUMI
IPC分类号： G05D3/12
摘要： PURPOSE:To prevent the stop controller for the electric motor from mechanically resonating owing to mechanical fixation in a stop state without any complicate external sequence process. CONSTITUTION:A torque command circuit 4 is provided with a timer circuit 44 and a torque limiter circuit 42 which sets a torque limiter corresponding to a position deviation and is equipped with a parameter setting circuit 43 stored with their set values.

6. 发明专利

JPH0469132A STOP CONTROLLER OF ELECTRIC MOTOR 失效
公开(公告)号：JPH0469132A
公开(公告)日：1992-03-04
申请号：JP18094990
申请日：1990-07-09
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITA HIROBUMI
IPC分类号： B23Q15/26 , B23Q16/02
摘要： PURPOSE:To realize stable fixed position stop operation in the shortest time by automatically optimizing position control loop gain and/or speed control loop gain according to the magnitude of load inertia. CONSTITUTION:A load inertia calculation circuit 19 sets creep speed Wci in a constant speed direction circuit C15. When load inertia is small, creep speed Wci becomes equal to Wc, but when it is large, creep speed Wci becomes smaller than Wc. In addition, load inertia calculation circuit 19 set position control loop gain Gpi in position control speed direction circuit 26. When load inertia is small, position control loop gain Gpi become value Gp, but when it is large, position control loop gain Gpi becomes smaller than value Gp. A fixed position stop motion control circuit 11 drives at a creep speed of Wci until position deviation thetas-thetar is reduced to a value of thetac or less. When position deviation thetas-thetar becomes a value of thetac or less, speed deviation Wpi-Wr is given to a speed control circuit 53.

7. 发明专利

JPH03121738A SPINDLE DRIVING DEVICE OF MACHINE TOOL 失效
公开(公告)号：JPH03121738A
公开(公告)日：1991-05-23
申请号：JP25819289
申请日：1989-10-03
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITA HIROBUMI , HAYASHIDA TAKAHIRO
IPC分类号： B23Q5/10 , B23Q5/04 , B23Q5/20 , B23Q16/02 , G05B19/23
摘要： PURPOSE:To provide a processing performance of high degree without generation of resonance phenomenon in a mechanical system by furnishing a gain changing means to change the gain of a position loop and a speed loop when the position control mode is selected. CONSTITUTION:A control mode changeover means 23 of a control device selects either of the speed control mode to control the revolving speed by means of negative feedback of the spindle 5 revolving speed and the position control mode to control the rotational position by means of negative feedback of the spindle rotational position. A gain changeover means changes the gains of a speed loop and a position loop at the time of machining to a greater value than at the time of idle machining in fast feeding in case the position control mode is in selection. That is, a switch changeover operating part 29 makes changeover setting of switches 27a, 28a to 'open' and switches 27b, 28b to 'close' on the basis of a gain changeover signal GCS from an NC 1, and the gains B of a position loop gain circuit 22b and a speed loop gain circuit 25b are set to a larger gain value than the gains A of gain circuits 22a, 25a.

8. 发明专利

JPH0276659A MACHINE TOOL SPINDLE DRIVING DEVICE 失效
公开(公告)号：JPH0276659A
公开(公告)日：1990-03-16
申请号：JP22771988
申请日：1988-09-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITA HIROBUMI , HAYASHIDA TAKAHIRO
IPC分类号： B23Q5/10 , B23Q5/04
摘要： PURPOSE:To shorten the time for changing over the operating mode to a great extent and allowing one system of spindle drive device to work well by equipping the spindle with a built-in location sensor of high precision type, and providing a spindle drive control device also with function to control not only the lathe operation mode but also the C-axis operation mode. CONSTITUTION:When C-axis operation mode is selected, a command from an NC device 1 is changed over from speed command Wr* to thetar* of C-axis operation mode. In conformity to the command thetar*, a spindle drive device 2 drives a motor 4 to make location control of the spindle 8. Information exchange between the NC control device 1 and spindle drive control device 2 is made by digital bus coupling. This enables synchronous operation with other shafts and eliminates shortage of resolution and analog noise influence.

9. 发明专利

JPH08107683A DRIVE CONTROLLER OF MOTOR AND INSULATION TYPE BIDIRECTIONAL DC VOLTAGE CONVERTING CIRCUIT 失效
公开(公告)号：JPH08107683A
公开(公告)日：1996-04-23
申请号：JP23907094
申请日：1994-10-03
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITA HIROBUMI , KAITANI TOSHIYUKI , KIMATA MASAHIRO , ONISHI YOSHITAKA
IPC分类号： H02H7/122 , H02H7/125 , H02M3/335 , H02M7/72 , H02P4/00 , H02P27/06 , H02P7/63
摘要： PURPOSE: To obtain a drive controller of a motor which can deal with different power-supply voltages by a minimum circuit-alteration while the drive controller of the motor, the motor, windings and the like are used in common and whose structure present between the motor and the input power-supply side whereon an electric power can be used for the bidirectional drive comprising power- running mode and regenerative mode drives is made to be an insulation structure. CONSTITUTION: A drive controller 30 of a motor is provided with an inverter part 5 for feeding an electric power to the motor and a converter part 31 fitted with an insulation type bidirectional DC voltage converting function. The converter part 31 has an insulation type bidirectional DC voltage converting part 32. The converting part 32 has an insulation type bidirectional DC voltage converting circuit 33, a controlling circuit 35 and a smoothing circuit 34.

10. 发明专利

JPH01185190A CONTROLLER FOR MACHINE TOOL MAIN-SHAFT MOTOR 失效
公开(公告)号：JPH01185190A
公开(公告)日：1989-07-24
申请号：JP322988
申请日：1988-01-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITA HIROBUMI
IPC分类号： H02P5/46
摘要： PURPOSE:To extremely widen the flexibility of a position detecting system, by dividing a position detecting circuit and a position controlling circuit respectively into the two systems of the circuits for an encoder system and for a magnetic sensor, and by composing the circuits to be arbitrarily selected. CONSTITUTION:In a one-amplifier and two-motor change-over controller, the stopping of a first main shaft motor 5 at a home position is controlled by an encoder 7, and the stopping of a second main shaft motor 9 at a home position is controlled by a magnetic sensor 12. By the instruction of a change-over controlling circuit 1, during the moving of the first main shaft motor 5, a contactor 17 and change-over switches 22, 24a, 26 are turned ON, and the circuit A of the encoder system of a position controlling circuit 16a is connected to, and by a power converter circuit 4, home position stop working with the encoder system for the final shaft 5a of the first main shaft motor 5 is performed. During the moving of the second main shaft motor 9, a contactor 18 and change- over switches 23, 25b, 27 are turned ON, and connected with the circuit B of the magnetic sensor system of the position controlling circuit 16a.

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