H02P25/028 - CPC Classification Index

ClassID:

218424 ⎘

H02P25/028 - CPC Classification

Classification description:

Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor; Synchronous motors with four quadrant control

Recent Application in this class:

20250192697

2025-06-12

MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD

20250175108

2025-05-29

MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD

20240275316

2024-08-15

METHOD FOR OPERATING A VARIABLE SPEED DRIVE FOR DRIVING AN ELECTRIC MOTOR AND VARIABLE SPEED DRIVE FOR EXECUTING THE METHOD

20220195656

2022-06-23

Clothes treating apparatus and the control method for the same

20170093317

2017-03-30

Current recycling voice-coil-motor (VCM) driver circuit

20170052341

2017-02-23

Temperature based control of voice coil motor

20160315573

2016-10-27

Voice coil motor driver and camera module having the same

20160204790

2016-07-14

DIGITAL-TO-ANALOG CONVERTER, AND MOTOR DRIVING CONTROL APPARATUS AND METHOD USING THE SAME

20160164446

2016-06-09

Method and apparatus for back electromotive force (EMF) position sensing in a cryocooler or other system having electromagnetic actuators

#10

20160118921

2016-04-28

Control circuit and method

#11

20160094116

2016-03-31

System and method for stabilizing a voice coil

#12

20160080623

2016-03-17

Moving member control apparatus and imaging apparatus incorporating the same

#13

20160065111

2016-03-03

VOICE COIL MOTOR DRIVING CIRCUIT

#14

20160050497

2016-02-18

Voice coil motor and loudspeaker controller

#15

20160043680

2016-02-11

Driving circuit for voice coil motor having a first driver coupled to a first end of a coil and a second driver coupled to a second end of the coil

#16

20160006386

2016-01-07

MOTOR DRIVE CONTROLLER AND METHOD FOR OPERATING THE SAME

#17

20150370031

2015-12-24

Lens driver circuit with ringing compensation

#18

20150310886

2015-10-29

Power failure management in disk drives

#19

20150262599

2015-09-17

Semiconductor integrated circuit and operating method for the same

#20

20150256731

2015-09-10

Driving circuit for voice coil motor, lens module and electronic device using the same, and driving method for voice coil motor

#21

20150241794

2015-08-27

Coil Switching Method for Moving Magnet Planar Motor

#22

20150241525

2015-08-27

Dynamic Correction to Remove the Influence of Motor Coil Flux on Hall Sensor Measurement

#23

20150236624

2015-08-20

Current detection circuit, motor driving device, magnetic disk storage device, and electronic appliance

#24

20150123576

2015-05-07

Motor drive control device and operation method thereof

#25

20150028789

2015-01-29

Motor Drive Control and Operating Method Therefor

#26

20140375829

2014-12-25

Moving member control apparatus and imaging apparatus incorporating the same

#27

20140368949

2014-12-18

Class-AB amplifier, motor drive device, magnetic disk storage device, and electronic apparatus

#28

20140355973

2014-12-04

System and method for controlling a motor

#29

20140340789

2014-11-20

Operational amplifier, motor drive device, magnetic disk storage device, and electronic appliance

#30

20140340783

2014-11-20

Back electromotive force monitoring circuit, motor drive device, magnetic disk storage device, and electronic appliance

#31

20140300993

2014-10-09

Motor drive device, magnetic disk storage device, and electronic appliance

#32

20140300992

2014-10-09

Motor drive device, magnetic disk storage device, and electronic device

#33

20140252995

2014-09-11

Motor controller

#34

20140217945

2014-08-07

Control techniques for motor driven systems utilizing back-EMF measurement techniques

#35

20140203751

2014-07-24

Motor drive controller and method for operating the same

#36

20140063641

2014-03-06

Circuitry for controlling a voice coil motor

#37

20140021886

2014-01-23

Motor drive control device and operation method thereof

#38

20140009089

2014-01-09

Apparatus and method for driving voice coil motor

#39

20130334990

2013-12-19

Driver circuit and method

#40

20130300336

2013-11-14

Position control system

#41

20130285579

2013-10-31

Actuator driver

#42

20130148240

2013-06-13

Disk drive charging capacitor using motor supply voltage during power failure

#43

20130098461

2013-04-25

Booster for a digital hydraulic controller and method for using a booster in connection with a digital hydraulic controller

#44

20120200763

2012-08-09

Driving circuit and method for voice coil motor with spring return

#45

20110304285

2011-12-15

Selection circuit with digital filter for VCM

#46

20110181211

2011-07-28

Drive control circuit for linear vibration motor

#47

20110181208

2011-07-28

Drive control circuit for linear vibration motor

#48

14853313

2016-09-06

Data storage device employing different frequency preambles in adjacent data tracks

#49

14292867

2015-11-03

Temperature compensation for sensors