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1. 发明专利

JP2002186226A MOTOR AND METHOD OF ASSEMBLING DIVIDED CORES THEREOF 失效
公开(公告)号：JP2002186226A
公开(公告)日：2002-06-28
申请号：JP2000383957
申请日：2000-12-18
申请人： TOYODA MACHINE WORKS LTD
发明人： SHIBATA YOSHIYUKI , SAKUGI YASUNORI
IPC分类号： H02K1/18 , H02K3/18 , H02K15/02
摘要： PROBLEM TO BE SOLVED: To provide a motor which can reduce a cogging torque by reducing a magnetic resistance resulting from a gap formed between an internal stator core 12 and an external stator core 17. SOLUTION: After the internal stator core 12 which is deformed like a conical spring, laminated and is provided with a coil 16 is engaged within the external stator core 17 which is accommodated and laminated within a cylindrical case 20, the conical spring shape is returned to the original shape. Consequently, a gap between the internal stator core 12 and external stator core 17 can be reduced.

2. 发明专利

JP2003097973A ASSEMBLY STRUCTURE OF DETECTION DEVICE FOR ROTATION DISPLACEMENT 审中-公开
公开(公告)号：JP2003097973A
公开(公告)日：2003-04-03
申请号：JP2001287721
申请日：2001-09-20
申请人： TOYODA MACHINE WORKS LTD
发明人： ANDO KATSUAKI , SAKUGI YASUNORI , YAMAGUCHI SHIGETOSHI
IPC分类号： G01D5/245 , B62D5/04 , H02K11/00 , H02K24/00 , H02K29/12
摘要： PROBLEM TO BE SOLVED: To easily assemble a detection device for rotation displacement in short duration without adjusting an offset. SOLUTION: A power steering device 11 includes a motor housing 14, in which a brushless DC motor 14a is installed. The motor 14a is formed with a driving stator 18 and a motorshaft 19, and a fitting recess 18c is molded at an end of the right side of the driving motor 18. A resolver 32, which is installed at the right side of the driving stator 18, is formed with a detection stator 33 and a detection rotor 34. A fitting convexity 33f is molded on the detection stator 33 so as to project to the side of the driving stator 18. This fitting convexity 33f is fitted into the fitting concavity 18c, and then is a predetermined position in a circumferential direction where the detection stator 33 makes with an axis as a center to the driving stator 18.

3. 发明专利

JP2001086678A MOTOR AND MANUFACTURE OF MOTOR 失效
公开(公告)号：JP2001086678A
公开(公告)日：2001-03-30
申请号：JP26159199
申请日：1999-09-16
申请人： TOYODA MACHINE WORKS LTD
发明人： SAKUGI YASUNORI , YAMAGUCHI SHIGETOSHI
IPC分类号： H02K1/28 , H02K1/27
摘要： PROBLEM TO BE SOLVED: To materialize a motor which can suppress the occurrence of cogging torque and the manufacture of this motor. SOLUTION: A ring magnet 14 is inserted, while keeping a gap, in condition that a thermosetting film-form adhesive 30 is stuck to a shaft 12. Then, the clearance between the shaft and the ring magnet is narrowed by heating it, and the ring magnet 14 is fixed to the shaft 12 through the thermosetting film- form adhesive. Since this motor uses the thermosetting film-form adhesive 30 with a fixed thickness is used, this can fix the clearance, and can suppress the occurrence of cogging torque.

4. 发明专利

JP2000152577A RELUCTANCE MOTOR 失效
公开(公告)号：JP2000152577A
公开(公告)日：2000-05-30
申请号：JP31766298
申请日：1998-11-09
申请人： TOYODA MACHINE WORKS LTD
发明人： SAKUGI YASUNORI , YAMAGUCHI SHIGETOSHI
IPC分类号： H02K1/24 , H02K19/10
摘要： PROBLEM TO BE SOLVED: To provide a reluctance motor in which torque ripples are suppressed. SOLUTION: This reluctance motor consists of a stator equipped with salient poles 22U-22W around which winding 24 is wound, and a rotor 30 equipped with salient poles 32. By imparting a rotation radius to the tip surface S of the salient pole 32 of the rotor 30, the change of inductance of an armature winding 24 is made sinusoidal. As a result, torque ripples can be suppressed so that vibration is not generated when this motor is used in electrically-driven power steering.

5. 发明专利

JPH03284184A DIGITAL SERVOCONTROLLER 失效
公开(公告)号：JPH03284184A
公开(公告)日：1991-12-13
申请号：JP8198090
申请日：1990-03-28
申请人： TOYODA MACHINE WORKS LTD
发明人： YOKOE ISAMU , TAKANO TOSHIO , SAKUGI YASUNORI
IPC分类号： H02P21/00 , H02P21/05 , H02P21/18 , H02P21/22 , H02P21/24 , H02P23/04 , H02P23/16 , H02P23/18 , H02P27/04 , H02P27/08
摘要： PURPOSE:To prevent oscillation of output torques by controlling the load current of a servomotor through the PWM voltage control of an inverter. CONSTITUTION:A digital signal processor 14 compares the current target value of a servomotor 31 with the current feedback value of load current detected by current transformer 32a, 32b to calculate current deviation and operates the instantaneous current command value at this time from the instantaneous current deviation at this time and the cumulative value and the current target value of the instantaneous current deviation. That instantaneous current command value is compared with high-frequency triangular waves to generate voltage control PWM signal which controls on-off states of each phase transistor of the inverter 25. This voltage control PWM signal is outputted to the inverter 25 to drive each phase transistor of the inverter 25. The load current of each pair of transistors is controlled to the current target value by switching of this inverter 25.

6. 发明专利

JP2001045691A INSULATING STRUCTURE OF MOTOR 失效
公开(公告)号：JP2001045691A
公开(公告)日：2001-02-16
申请号：JP21924599
申请日：1999-08-02
申请人： TOYODA MACHINE WORKS LTD
发明人： SAKUGI YASUNORI
IPC分类号： H02K1/04 , H02K1/18 , H02K3/34 , H02K3/46
摘要： PROBLEM TO BE SOLVED: To electrically insulate easily a coil from both iron cores only by providing a first and a second insulating means to the internal side cylindrical iron core, without the provision for an insulating means to the external side cylindrical iron core. SOLUTION: A stator of motor is provided with an external side armature iron core 2 and an internal side armature iron core 3. The internal size armature iron core 3 is provided with a plurality of projected poles 4 along the circumferential direction. An insulating film 13, having completed the heat treatment, is provided at the coil winding portion 11 of each projected pole 4, and a coil 14 is wound around the coil winding portion 11. The insulating material loading portion 12 of each projected pole 4 is provided with a recessed cutout groove 15, and an insulating material 16 is loaded to the cutout grooves 15, provided opposite to each other at the adjacent two projected poles 4. An insulating means is not provided at the internal side surface of the external side armature iron core 2.

7. 发明专利

JP2000350391A MANUFACTURING METHOD OF MOTOR AND MOTOR 失效
公开(公告)号：JP2000350391A
公开(公告)日：2000-12-15
申请号：JP15781999
申请日：1999-06-04
申请人： TOYODA MACHINE WORKS LTD
发明人： SAKUGI YASUNORI , YAMAGUCHI SHIGETOSHI
IPC分类号： H02K1/18 , H02K1/28 , H02K15/02
摘要： PROBLEM TO BE SOLVED: To increase the flux flow of an outer core without increasing the outer diameter of a motor core, and to achieve miniaturization and to generate large torque by forming a projection part in a place where the outer core is brought into contact with an inner one, by forming a recessed part in a place where the inner core is brought into contact with the outer one, and by fitting the projection part to the recessed part for forming a motor core. SOLUTION: When an outer core 2 and an inner core 3 are punched from magnetic steel sheet (silicon steel sheet) 9, a projection part 4b is formed at a site corresponding to a place being brought into contact with the tip of teeth 5 of the inner core 3 of the outer core 2 when the punched outer and inner cores 2 and 3 are assembled. Then, at the tip of the teeth 5 of the inner core 3 in contact with the projection part 4b of the outer core 2, a recessed part 6 that is engaged to the projection part 4b is formed. Then, a coil 8 is wound to the teeth 5 of the inner core 3, and the projection part 4b of the outer core 2 is fitted to the recessed part 6 of the inner core for forming a motor core 1a, thus generating large torque regardless of a compact size without reducing flux flowing in the circumference direction of the outer core even when the external diameter of the outer core is not increased.

8. 发明专利

JPH0588751A POSITIONING DEVICE 失效
公开(公告)号：JPH0588751A
公开(公告)日：1993-04-09
申请号：JP27470691
申请日：1991-09-26
申请人： TOYODA MACHINE WORKS LTD
发明人： YONEDA TAKAO , HOTTA TAKAYUKI , SAKUGI YASUNORI , KATO TOMOYA , YONEZU HISAHIRO
IPC分类号： G05B19/18 , G05B19/39 , G05D3/00 , G05D3/12
摘要： PURPOSE:To attain the absolute value positioning with high accuracy by using an absolute encoder and an incremental encoder at one time. CONSTITUTION:An absolute encoder 2 is attached to a motor 1 and the output axis 3 of the motor 1 is coupled to the gear 5 of a reduction gear 4. Meanwhile a spindle 8 is attached to an output axis 7 of the gear 4, and an incremental encoder 9 is attached to the spindle 8. The motor 1, the encoder 2, and the encoder 9 are connected to a position loop control part of a CNC device 10. That is, the device 10 reads the detected positions of both encoders 2 and 9 and calculates the multi-rotational frequency and the off set value at start up of a servo clock like the application of a power supply, etc. Thereafter the device 10 calculates the present position of the spindle 8 from only the count value of the encoder 9 and then performs the feedback control.

9. 发明专利

JPH04138096A MOTOR CONTROLLER 失效
公开(公告)号：JPH04138096A
公开(公告)日：1992-05-12
申请号：JP25922190
申请日：1990-09-27
申请人： TOYODA MACHINE WORKS LTD
发明人： ENOMOTO MINORU , TAKANO TOSHIO , SAKUGI YASUNORI , KAMIYA SHINGO
IPC分类号： H02P27/06
摘要： PURPOSE:To prevent fluctuation of motor output torque by splitting the duration each of a series of control signals, produced with a control period equal to 1/n of the period of rotary field, into m sections and then outputting a set of split control signals m times. CONSTITUTION:Durations of a set of voltage vectors V6, V1, V0 are t1, t2, t3 which are split into four sub-durations of t1*, t2*, t3*, t4*. During first T/4 period, PWM signals comprising a set of forward voltage vectors V6, V1, V0 are outputted for the durations t1*, t2*, t3*, t4*, respectively. During second T/4 period, PWM signals comprising a set of reverse voltage vectors V0, V1, V6 are outputted for durations t3*, t2*, t1*, respectively. During third and fourth periods, PWM signals comprising a set of voltage vectors are outputted similarly. In such a manner, a single control period T completes with four continuous split periods.

10. 发明专利

JP2001103783A MOTOR CONTROLLER 失效
公开(公告)号：JP2001103783A
公开(公告)日：2001-04-13
申请号：JP27819599
申请日：1999-09-30
申请人： TOYODA MACHINE WORKS LTD
发明人： SAKUGI YASUNORI
IPC分类号： H02P6/08 , H02P6/06 , H02P21/00 , H02P21/05 , H02P21/14 , H02P21/18 , H02P21/22 , H02P21/24 , H02P23/04 , H02P23/14 , H02P27/04 , H02P27/08
摘要： PROBLEM TO BE SOLVED: To embody a motor controller capable of reducing cogging torque according to the temperature of a motor without change in the mechanical structure of the motor itself. SOLUTION: A d-axis current command value computation part reads a angular speed of motor rotation ωθ outputted from an angular speed computation part (S10) of motor rotation and, referring to a d-axis current command value map, judges whether the read motor angle-of-rotation speed ωθ is within a range expressed as (-ωθ1)

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