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Class Information
Number: 318/799
Name: Electricity: motive power systems > Induction motor systems > Primary circuit control > Responsive to motor condition > Responsive to speed or rotation phase angle
Description: Subject matter wherein the means to sense is responsive to the speed or the rotational phase angle of the motor being controlled or a device driven by the motor.










Sub-classes under this class:

Class Number Class Name Patents
318/804 With controlled magnetic reactance 70
318/800 With controlled power conversion 544


Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
8690549 Centrifugal pump unit Apr. 8, 2014
8653774 Motor driving circuit Feb. 18, 2014
8638057 Selective additional control in a control console for surgical instruments Jan. 28, 2014
8624533 Inverter power generator Jan. 7, 2014
8610394 Microcomputer for controlling ultrasonic motor, and method for controlling ultrasonic motor Dec. 17, 2013
8604729 Control of a permanent-magnet motor Dec. 10, 2013
8593086 System and method including feed-forward control of a brushless synchronous motor Nov. 26, 2013
8558488 Vibration-type motor controller and optical apparatus Oct. 15, 2013
8547051 Controller and method for transitioning between control angles Oct. 1, 2013
8547049 DC motor assembly with step adjusting control arrangement Oct. 1, 2013
8547050 Control method and system with feedback indicative of load flux Oct. 1, 2013
8542800 Asynchronous motor with features creating magnetic field disturbance Sep. 24, 2013
8525461 Motor control device Sep. 3, 2013
8508173 Adjustable ergonomic control console with user login Aug. 13, 2013
8502492 Single phase motor energy economizer for regulating the use of electricity Aug. 6, 2013
8487561 Softstarter device and method to control the softstarting of an electric motor Jul. 16, 2013
8487563 Drive motor control apparatus for vehicle, motor control system, method for correcting rotation angle of motor, program for performing the same, rotation detecting apparatus Jul. 16, 2013
8487575 Electric motor stator winding temperature estimation Jul. 16, 2013
8487579 Determination of the position of a component Jul. 16, 2013
8482232 Motor drive circuit Jul. 9, 2013
8471519 Control device and control method for AC motor Jun. 25, 2013
8447554 System, method and computer program for remotely testing system components over a network May. 21, 2013
8441225 Direct-current to three-phase alternating-current inverter system May. 14, 2013
8432123 Method and electric circuit for operating an electric motor, especially a servomotor, for a component of an internal combustion engine Apr. 30, 2013
8421399 Energy saver delay circuit for AC induction motors Apr. 16, 2013
8415908 Driving apparatus for electric motor and related method Apr. 9, 2013
8415907 Motor control method Apr. 9, 2013
8410733 Wound field synchronous motor drive Apr. 2, 2013
8410736 Controllable rectification device and electric motor comprising the same Apr. 2, 2013
8390240 Absolute position sensor for field-oriented control of an induction motor Mar. 5, 2013
8390238 Softstarter for controlling an asynchronous three-phase motor Mar. 5, 2013
8378612 Control system and method of operating a massage device Feb. 19, 2013
8378605 Method and apparatus for monitoring a system including a sensorless electric motor Feb. 19, 2013
8373380 Device and method for controlling alternating-current motor Feb. 12, 2013
8373369 Method and amplifier for operating a synchronous motor Feb. 12, 2013
8373371 Control of an electric machine Feb. 12, 2013
8362735 Single phase motor energy economizer for regulating the use of electricity Jan. 29, 2013
8354810 Electric power steering device Jan. 15, 2013
8353678 Controller for a motor and a method of controlling the motor Jan. 15, 2013
8324851 Method for determining a rotor position in a permanent magnet motor Dec. 4, 2012
8294409 Control of pole-change induction motors Oct. 23, 2012
8278861 External disturbance detection system and method for two-phase motor control systems Oct. 2, 2012
8274247 Rotary electric machine control system Sep. 25, 2012
8269437 Rotary electric machine control system Sep. 18, 2012
8269450 Winding switching apparatus and winding switching system Sep. 18, 2012
8264192 Controller and method for transitioning between control angles Sep. 11, 2012
8264181 Controller for motor drive control system Sep. 11, 2012
8253370 Microcomputer for controlling ultrasonic motor, and method for controlling ultrasonic motor Aug. 28, 2012
8242734 Controller of spindle provided with encoder Aug. 14, 2012
8242728 Method for modernizing a technical system and an appropriate drive element Aug. 14, 2012

1 2 3 4 5 6 7 8 9 10










 
 
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