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| Application No. | Application Title | Issue Date |
| 20120068651 | GENERATOR DRIVE SYSTEM FOR AN INTERNAL COMBUSTION ENGINE A generator drive system for the generator (3) of an internal combustion engine (1), including a flexible drive having a traction mechanism (5) which is guided across a generator pulley (6) driving the generator (3). The generator (... | 03/22/2012 |
| 20120032623 | METHOD OF CONTROLLING FAN SPEED A method of controlling fan speed is provided. The method includes: setting a target speed of the fan; providing an actual control speed signal and using the actual control speed signal to drive the fan so as to obtain an actual speed of the fan; determining whether the... | 02/09/2012 |
| 20110266991 | SEAT ADJUSTING DEVICE A seat adjusting device for an automobile seat (1) having an electric motor (11) for generating a drive motion, wherein the electric motor is operationally coupled to a gearbox (13) for transmitting the drive motion thereof, the gearbox having a gea... | 11/03/2011 |
| 20110133680 | FAN SPEED CONTROL METHOD The invention relates to a method of control fan speed in a fan speed control system having a cooling fan driven by a motor, a motor driver for driving the motor at a speed corresponding to a fan speed control signal, and an electronic control unit (ECU) for generating ... | 06/09/2011 |
| 20110084643 | METHOD AND APPARATUS FOR FAILSAFE MONITORING AN ELECTROMOTIVE DRIVE The invention relates to a method and to an apparatus for the failsafe monitoring of an electromotive drive (10) without additional sensors. The apparatus comprises a drive having a three-phase control of an electric motor, means (20) for detecting the cur... | 04/14/2011 |
| 20110084638 | METHODS, SYSTEMS AND APPARATUS FOR DYNAMICALLY CONTROLLING AN ELECTRIC MOTOR THAT DRIVES AN OIL PUMP Methods, system and apparatus are provided for sensorless control of a vector controlled motor drive system that includes an electric motor used to drive an auxiliary oil pump.... | 04/14/2011 |
| 20110050142 | SYSTEM AND METHOD FOR MOTOR SPEED ESTIMATION OF AN ELECTRIC MOTOR A system and method for a motor management system includes a computer readable storage medium and a processing unit. The processing unit configured to determine a voltage value of a voltage input to an alternating current (AC) motor, determine a frequency value of at le... | 03/03/2011 |
| 20110043151 | MOVABLE UNIT DRIVING APPARATUS A movable unit driving apparatus which drives a movable unit by a motor, the movable unit driving apparatus includes a first detection unit configured to detect that the movable unit passes a first position; a second detection unit configured to detect that the movable ... | 02/24/2011 |
| 20100327791 | ELECTRIC MACHINE WITH NON-COAXIAL ROTORS A rotary electric machine having plural rotary elements in a non-coaxial arrangement is disclosed. The rotary electric machine includes a housing assembly, at least one stator frame mounted in the housing assembly, at least one stator winding wound on the at least one s... | 12/30/2010 |
| 20100319268 | METHOD FOR OBTAINING A CRITERION FOR DETECTING OBSTACLES TO THE CLOSURE OF AN OPENING The invention relates to a method for obtaining a criterion for detecting obstacles in a closure movement of a motor-driven opening. The obtaining method includes the step of determining a speed of rotation of a motor shaft and the step of determining a quantity represe... | 12/23/2010 |
| 20100244758 | FAN DEVICE WITH IMPROVED SPEED CONTROL MODULE AND PLURAL FAN SYSTEM CONSTRUCTED THEREBY A fan device with improved speed control module includes a stator, a rotor, and a speed control module. The stator has a driving unit outputting currents for the stator to generate alternative magnetic fields and thus turn the rotor. The speed control module includes a ... | 09/30/2010 |
| 20100171456 | VOLTAGE SOURCE INVERTER WITH A VOLTAGE OFFSET Methods and apparatus are provided for operation of a voltage source inverter. A method of operating a voltage source inverter having an output with multiple voltage phases having a DC voltage level, the method comprising sensing a low output frequency condition; determ... | 07/08/2010 |
| 20100162918 | TRACTION CONTROL FOR DC ELECTRIC MOTOR A method of propelling a mobile machine is disclosed. The mobile machine may have a plurality of DC traction motors, including a first DC traction motor and a second DC traction motor. The method may include driving a first traction device with the first DC traction mot... | 07/01/2010 |
| 20100117578 | GARAGE DOOR OPENER This invention relates generally to a garage door opener. The garage door opener has a user interface and an integrated motor operatively connected to the garage door. The integrated motor has a motor drive and an integrated motor control circuit. The integrated motor c... | 05/13/2010 |
| 20100103608 | INFORMATION PROCESSING APPARATUS AND METHOD FOR CONTROLLING INFORMATION PROCESSING APPARATUS An information processing apparatus sets a driving keeping voltage for keeping driving of a fan to a voltage that is higher than a voltage that is applied to the fan when the fan is determined not to be rotating after decreasing the voltage that is applied to the fan in... | 04/29/2010 |
| 20100083579 | MOTOR CONTROL CIRCUIT AND POWER WINDOW DEVICE A motor control circuit includes a manipulation unit, a control unit that drives a motor in a normal rotation direction or a reverse rotation direction, a catch detecting unit that detects a foreign substance caught in the opening and closing body, a first relay circuit... | 04/08/2010 |
| 20100057284 | METHOD AND APPARATUS FOR CONTROLLING MOTOR FOR SKID MODE OF ELECTRIC VEHICLE The present invention discloses a method and apparatus for controlling a motor for an electric vehicle. The method and apparatus calculates the current acceleration a of the motor according to the detected rotor position values in real-time, and if the current accelerat... | 03/04/2010 |
| 20100007300 | Method and system for temperature-based power converter control A method of controlling a power converter in an electric drive machine is disclosed. The method may include determining a first switching frequency and determining a second switching frequency. The method may also include comparing the first switching frequency and the ... | 01/14/2010 |
| 20090256505 | SYNCHRONOUS MOTOR AND CONTROL METHOD OF SYNCHRONOUS MOTOR A synchronous motor including therein a three-phase inverter and position sensors, having a unit for calculating a digital input current value from the analog output of an input current detection circuit that detects the input current flowing into the DC input terminal ... | 10/15/2009 |
| 20090242292 | Method and system for operating an electric machine In a method for operating an electric machine which is coupled to a drive shaft, the electric machine is connected to a high voltage direct-current power supply line (HDVC) by a switch and the rotational speed of the connected electric machine or of the drive shaft coup... | 10/01/2009 |
| 20090136360 | METHOD OF CONSTANT AIRFLOW CONTROL FOR A VENTILATION SYSTEM A method of constant airflow control for a ventilation system is disclosed. The method includes various controls to accomplish a substantially constant airflow rate over a significant change of the static pressure in a ventilation duct. One control is a constant I·RPM ... | 05/28/2009 |
| 20090001915 | METHOD AND APPARATUS FOR ACTIVE VOLTAGE CONTROL OF ELECTRIC MOTORS Methods and apparatus are provided for dynamic voltage control of electric motors. An inverter provides an output voltage to an electric motor based on a gate voltage. The method includes determining a speed of the electric motor and modifying the gate voltage based on ... | 01/01/2009 |
| 20090001916 | MOTOR CONTROLLING DEVICE AND METHOD TEHREOF A motor controlling device and a motor controlling method are provided. The motor controlling device includes a first sensor, a second sensor and a signal switching circuit. The signal switching circuit is electrically connected to the first and second sensors, respecti... | 01/01/2009 |
| 20080315818 | AXIAL GAP TYPE MOTOR/GENERATOR An axial gap type motor/generator is provided with a stator, a rotor and an alternating current control device. The alternating current control device executes alternating current control of a single phase or multiple phase alternating current flowing in the coils. The ... | 12/25/2008 |
| 20080315816 | Motor Control Device And Compressor A motor control device performing vector control for a motor that drives a load whose load torque varies periodically. The motor control device has: a motor speed deriving portion estimating or detecting a motor speed; a speed controller producing a specified torque cur... | 12/25/2008 |
| 20080310967 | INTELLIGENT AIR MOVING APPARATUS An intelligent air moving apparatus for cooling an electronics enclosure includes a motor for driving a fan at a variable rotational speed and a microcontroller for controlling the rotational speed of the motor. The microcontroller includes a speed sensor for sensing th... | 12/18/2008 |
| 20080303468 | CORRECTION METHOD FOR MICROPROCESSOR-CONTROLLED DIGITAL REGULATION In a correction method for a microprocessor-controlled digital regulation of a drive motor, wherein the measurement arrangement used for the regulation of the motor is simplified. recognizing that the real value surveying cannot always be implemented periodically by the... | 12/11/2008 |
| 20080297076 | Closure panel control apparatus A controller prestores average moving speed data, which corresponds to respective corresponding positions of a window glass of a door driven by a motor at the time of the closing movement of the window glass, as learning data. The controller senses pinching of an object... | 12/04/2008 |
| 20080258664 | FAN CIRCUIT WITH A FAN SPEED CONTROL CIRCUIT A fan speed control circuit is used for controlling rotation speed of a fan. The fan speed control circuit receives a pulse width modulation (PWM) signal from a system and comprises a programmable control unit and a current control unit. The programmable control unit re... | 10/23/2008 |
| 20080258665 | Door drive control apparatus and door drive control method A door drive control apparatus capable of an accurate detection, without misidentifying an inverse overrun condition, and a door drive control method that improves safety. The door drive control apparatus includes a power converter that supplies power to a door drive li... | 10/23/2008 |
| 20080246426 | Control system for multiphase rotary machines A control system aims at converting, via a switching circuit, a direct current voltage into an alternating current voltage to be applied to multiphase windings of a multiphase rotary machine to thereby control rotation of the multiphase rotary machine. In the control sy... | 10/09/2008 |
| 20080224648 | MOTOR CONTROL DEVICE, METHOD AND PROGRAM STORAGE MEDIUM There are provided a motor control device and a method for deciding a velocity instruction shape within the limit of a movement range, a velocity, and an acceleration of an object device while maintaining the acceleration as high as possible in inertia identification. T... | 09/18/2008 |
| 20080203953 | CONTROL BANDWIDTH FOR COST EFFECTIVE AC MOTOR DRIVES IN AEROSPACE APPLICATIONS USING TWO DSP DEVICES WITH DISSIMILAR REDUNDANT INTER-PROCESSOR COMMUNICATION LINK A digital control system for an electric motor uses two motor-control DSP's operated in parallel to provide high bandwidth motor control. Each of the two DSP's individually may have a limited processing rate (e.g. about 150 million instructions per second [MIPS]). Paral... | 08/28/2008 |
| 20080196955 | POWER OUTPUT DEVICE, AND HYBRID VEHICLE EQUIPPED WITH THE POWER OUTPUT DEVICE A motor-generator is feedback-controlled by adopting the rotation speed information from a resolver when the rotation speed of a motor-generator is low, and by adopting the rotation speed information from a north marker when the rotation speed thereof is high. If the gr... | 08/21/2008 |
| 20080111511 | ELECTRIC POWER-ASSIST SYSTEM FOR MANUALLY-OPERATED VEHICLE An electric power-assist system for a manually operated vehicle, such as a bicycle, has a pedal with Hall sensors for producing a signal representing a rotational speed of the pedal, and an electric motor for power assisting the driving force of the bicycle. A speed cou... | 05/15/2008 |
| 20080088267 | Method For Monitoring A Drive Device For A Standstill Condition, Monitoring System Therefore, And Drive System Therefore In a method for monitoring a stationary condition of a drive device, a monitoring device provides the drive device with a temporally varying monitoring signal which, when a sensor device connected to the drive device functions properly, modulates a sensor output signal ... | 04/17/2008 |
| 20080048601 | System And Method For Determining Barrier Motor Parameters Without Using Sensors This invention deals with a barrier operator system comprising a direct current (dc) motor coupled to a barrier, where the dc motor is driven by a string of voltage pulses. The system has a barrier operator that is programmed to determine various qualities including the... | 02/28/2008 |
| 20080042605 | Electric motor drive control method and apparatus An electric motor drive control method includes deriving a target current from a target torque to apply electric current corresponding to the target current to an electric motor. When a rotation speed of the motor is in a predetermined speed region, including a zero rot... | 02/21/2008 |
| 20080036409 | Method For Controlled Braking Of A Door And Device For Applying Said Method The invention relates to a method for controlled braking of an electrically powered lifting action in the event of a failure, such that at least one of the nominal values for “rotational direction” and/or “operating speed” and/or “door position” and/or “mo... | 02/14/2008 |
| 20070247099 | SYSTEM AND METHOD FOR TRANSIENT-BASED MOTOR SPEED ESTIMATION WITH TRANSIENT EXCITATION Control systems and speed estimation systems are presented having a transient-based speed estimation system that provides a rotor speed estimate based on a measured speed-related motor transient signal, and a transient excitation system which selectively modifies at lea... | 10/25/2007 |
