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1. WO2019054475 - MOTOR DRIVE SYSTEM AND MOTOR CONTROL METHOD

Publication Number WO/2019/054475
Publication Date 21.03.2019
International Application No. PCT/JP2018/034169
International Filing Date 14.09.2018
IPC
H02P 6/16 2016.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
6Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
14Electronic commutators
16Circuit arrangements for detecting position
G01D 5/245 2006.01
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12using electric or magnetic means
244influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
245using a variable number of pulses in a train
CPC
G01D 5/245
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12using electric or magnetic means
244influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
245using a variable number of pulses in a train
H02P 6/16
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
6Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
14Electronic commutators
16Circuit arrangements for detecting position
Applicants
  • NTN株式会社 NTN CORPORATION [JP]/[JP]
Inventors
  • 井口 和幸 INOKUCHI, Kazuyuki
  • 松任 卓志 MATSUTO, Takushi
Agents
  • 特許業務法人深見特許事務所 FUKAMI PATENT OFFICE, P.C.
Priority Data
2017-17771615.09.2017JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) MOTOR DRIVE SYSTEM AND MOTOR CONTROL METHOD
(FR) SYSTÈME DE PILOTAGE DE MOTEUR ET PROCÉDÉ DE COMMANDE DE MOTEUR
(JA) モータ駆動システムおよびモータの制御方法
Abstract
(EN)
This motor drive system (10) is provided with a motor (50), a dual-axis magnetic sensor (80), an alternating-type magnetic sensor (70), a magnetic pole rotary angle detection unit (60), and a motor control device (20). The alternating-type magnetic sensor (70) and the dual-axis magnetic sensor (80) are arranged on a substrate having a fixed positional relationship with a stator. The alternating-type magnetic sensor (70) includes as many or more Hall sensors (71 to 73) than the number of phases of coils in the motor (50). The magnetic pole rotary angle detection unit (60), in response to outputs from the dual-axis magnetic sensor (80) and the alternating-type magnetic sensor (70), detects a magnetic pole rotary angle of a rotor. The motor control device (20), using the magnetic pole rotary angle of the rotor that has been detected by means of the magnetic pole rotary angle detection unit (60), controls an electric current through the coils. In this way, torque variations at extremely low speeds or during termination of rotation of a brushless motor are reduced, while preventing an increase in cost.
(FR)
L'invention concerne un système de pilotage de moteur (10) comportant un moteur (50), un capteur magnétique à deux axes (80), un capteur magnétique de type alternatif (70), une unité de détection de l'angle de rotation du pôle magnétique (60) et un dispositif de commande de moteur (20). Le capteur magnétique de type alternatif (70) et le capteur magnétique à deux axes (80) sont disposés sur un substrat ayant une relation de position fixe avec un stator. Le capteur magnétique de type alternatif (70) comprend un nombre de capteurs à effet Hall (71 à 73) égal ou supérieur au nombre de phases des bobines dans le moteur (50). L'unité de détection de l'angle de rotation du pôle magnétique (60), en réponse à des données de sortie provenant du capteur magnétique à deux axes (80) et du capteur magnétique de type alternatif (70), détecte l'angle de rotation du pôle magnétique d'un rotor. Le dispositif de commande de moteur (20), à en utilisant l'angle de rotation du pôle magnétique du rotor qui a été détecté au moyen de l'unité de détection de l'angle de rotation du pôle magnétique (60), commande le passage d'un courant électrique à travers les bobines. Ainsi, les variations de couple à des vitesses extrêmement basses ou à la fin de la rotation d'un moteur sans balais sont réduites, et ce, sans augmentation des coûts.
(JA)
モータ駆動システム(10)は、モータ(50)と、2軸磁気センサ(80)と、交番型磁気センサ(70)と、磁極回転角検出部(60)と、モータ制御装置(20)とを備える。交番型磁気センサ(70)および2軸磁気センサ(80)は、ステータとの位置関係が固定された基板に配置される。交番型磁気センサ(70)は、モータ(50)のコイルの相数と同個数以上のホールセンサ(71~73)を含む。磁極回転角検出部(60)は、2軸磁気センサ(80)および交番型磁気センサ(70)の出力を受けてロータの磁極回転角度を検出する。モータ制御装置(20)は、磁極回転角検出部(60)によって検出されたロータの磁極回転角度を用いてコイルの電流を制御する。このようにして、コストの上昇を抑えつつ、ブラシレスモータの極低速時、回転停止時のトルク変動を軽減する。
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