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Patent Searching and Data


Matches 351 - 400 out of 23,244

Document Document Title
WO/2009/066840A2
The present invention relates to a motor controller, including a converter for converting commercial AC power into DC power, an inverter including a plurality of switching elements, the inverter receiving the DC power, converting the DC ...  
WO/2009/065699A2
The invention relates to a method and a device for determining the position of a closing part of a vehicle, that can be moved by a direct-current motor. A motor current signal is derived from the direct-current motor and converted into a...  
WO/2009/066839A2
The present invention relates to a motor controller of an air conditioner, including an inverter including a plurality of switching elements and adapted to convert a DC voltage, input through switching operations of the switching element...  
WO/2009/065280A1
An electric shaver with an led/lcd speed display comprises a power circuit module, a motor module, a motor-driving module, a motor-detecting module, a charge control module, a module for sampling electric quantity of a self-provided powe...  
WO/2009/020737A3
A control circuit includes a PWM oscillator configured to generate a PWM output signal having a duty cycle. The speed of a motor is controlled by the PWM output signal to be proportional to the duty cycle. The control circuit also includ...  
WO/2008/069359A3
A motor power device includes a power circuit having a low voltage part that receives and converts AC power and outputs DC voltage, wherein a first power for a motor drive coil and a second power for a control circuit controlling the mot...  
WO/2009/052808A2
The invention relates to a circuit arrangement (1) in the manner of control electronics for operation in the clockwise and/or counterclockwise rotation of an electric motor (2) in a power tool, particularly for a cordless screwdriver. Th...  
WO/2009/053161A1
The invention relates to a method for detecting a load drop of a unit (80) that is connected to an H bridge circuit (52) of a controller (50), wherein the load drop is detected via at least one comparator (68) of the controller (50), whi...  
WO/2007/001800A3
A digital motor control system (Fig 4) utilizes time duration electric pulses generated by digital logic (10, 13, 18, 19) to control the motor speed and direction of rotation of a D C or A C motor (30) The digital logic (10, 13, 18,19) p...  
WO/2009/051235A1
A motor drive circuit is provided with an output circuit having a drive transistor which supplies a motor with a drive current. The output circuit is characterized in having a control transistor which turns on the drive transistor connec...  
WO/2009/052165A2
Presented is a harmonic regulator that regulates a plurality of individual harmonics in a system having periodic torque disturbances to commanded values, including zero. For each harmonic being regulated, a feedback signal having at leas...  
WO/2008/036089A3
A thermal plasma generator may be used in conjunction with at least one thermal to electric converter, such as a solid state thermal to electric energy to electric converter. A micropipe heat pump extracts heat from the at least one ther...  
WO/2008/138600A3
The invention relates a wind turbine comprising a rotor (12) provided with adjustable rotor blades (13) for driving a generator (14), an adjusting device (3) for the rotor blades (13) provided with an actuator (4) that comprises at least...  
WO/2009/046673A1
A torque management method for motors of hybrid electric vehicles. The method includes torque combination and limitation in electric driving mode, torque combination and limitation in generating mode, and torque arbitrating management. W...  
WO/2007/139570A3
A trash can can include a sensor for detecting the presence of an object near a lower portion of the trash can. The detection of the object can be used to signal the trash can to open its lid. The trash can can include an electric drive ...  
WO/2009/041888A1
A method for creating a stream of air for removing residue particles formed in connection with cutting, grinding and/or polishing of a stone or stone-like material is disclosed. The method comprising energizing an electric motor (27) to ...  
WO/2009/007175A3
The invention is directed at an electric motor commutator (12) with a switching link (20) with a high-side semiconductor (T1) and a low-side semiconductor (T4). In addition, the commutator (12) has a pulse-width modulator (26) for drivin...  
WO/2009/016468A3
In a pump control apparatus (100) that controls the discharge of brake fluid using the rotation of a motor, the number of windings in a low speed circuit (140) is set such that the motor operates at a second rotation speed when the low s...  
WO/2009/034223A1
DC/DC bridge for controlling a direct-current load (M1), which bridge is provided with controllable semiconductor switches (S11 - S14, S21 - S26) and with a control unit (BC1). The bridge comprises two bridge sections (B11, B12), at leas...  
WO/2008/113458A3
The invention relates to a method and a device for detecting the rotation of a brush-operated d.c. motor (1) comprising a number of winding branches (3) which are electrically connected between brushes (6, 7), during the operation of the...  
WO/2009/000576A3
The invention relates to a method and a device for detecting the rotation direction of a drive unit, especially of an adjustment drive (64) in a motor vehicle. Said device comprises a motor (12) the rotation direction of which can be rev...  
WO/2009/003703A3
The invention relates to a device (1) for driving an electric motor (2), particularly a DC motor in a battery-operated electric tool. Said driving device (1) comprises a power circuit (3) encompassing at least one power semiconductor (4,...  
WO/2009/020737A2
A control circuit includes a PWM oscillator configured to generate a PWM output signal having a duty cycle. The speed of a motor is controlled by the PWM output signal to be proportional to the duty cycle. The control circuit also includ...  
WO/2009/016468A2
In a pump control apparatus (100) that controls the discharge of brake fluid using the rotation of a motor, the number of windings in a low speed circuit (140) is set such that the motor operates at a second rotation speed when the low s...  
WO/2009/007175A2
The invention is directed at an electric motor commutator (12) with a switching link (20) with a high-side semiconductor (T1) and a low-side semiconductor (T4). In addition, the commutator (12) has a pulse-width modulator (26) for drivin...  
WO/2009/003703A2
The invention relates to a device (1) for driving an electric motor (2), particularly a DC motor in a battery-operated electric tool. Said driving device (1) comprises a power circuit (3) encompassing at least one power semiconductor (4,...  
WO/2009/000579A2
The invention relates to a method and a device for detecting the rotation direction of a drive unit, especially of an adjustment drive in a motor vehicle. Said device comprises a motor (12) the rotation direction of which can be reversed...  
WO/2009/000234A1
The present invention relates to an apparatus and method for determination of the present position of a rotor, in particular of the rotation angle of the rotor, of an electric motor, with this apparatus determining the present position o...  
WO/2008/150334A1
A power tool may include an electronically commutated motor such as, for example, a brushless DC permanent magnet motor with a rotor having internally mounted magnets. A control system may be used to control the motor in a manner that im...  
WO/2008/005659A3
Robot platforms, methods, and computer media are disclosed. The robot platforms (100) include perceptors (165), locomotors (175), and a system controller (HO), which executes instructions for a robot to follow a target in its environment...  
WO/2008/138454A2
The invention relates to an electric drive which comprises at least one motor (31) which is or can be supplied with an electric motor current (30) by means of a converter (26), a current regulator (22) by means of which the motor current...  
WO/2008/138663A1
The invention relates to a method for operating a non-stalling electric motor (2), comprising the following steps: determining an indication of the motor temperature (T); providing an actuating voltage for operating the electric motor de...  
WO/2008/135138A1
The invention relates to a method and a device for determining the motor torque constant KM of an electric motor by measuring motor parameters on the running motor. In order to reduce the previously extensive measurement effort, it is pr...  
WO/2008/135605A1
The present invention describes a pitch control system comprising a principal converter, and auxiliary converter, a direct current motor and a power storage system (accumulator) and has four different operation modes: normal, fault (firs...  
WO/2008/133426A1
A blushless direct current (BLDC) motor apparatus includes: a stator which is provided with a plurality of windings corresponding to N phases and wound in parallel independently of each other; a rotor which has a plurality of poles corre...  
WO/2008/130560A1
A mover (344) moving a stage (238) along a first axis and about a second axis includes a magnetic component (454), and a conductor component (456). The magnetic component (454) includes one or more magnets (454D) that are surrounded by a...  
WO/2008/130982A1
A method of controlling a motorized window treatment provides for continued operation of the motorized window treatment during an overload or low-line condition. The motorized window treatment is driven by an electronic drive unit having...  
WO/2007/149360A3
A method and apparatus for an automated waste receptacle includes a waste flap, a motor positioned on a bottom side of the waste flap and an actuator located in proximity of the top side of the waste flap, wherein the actuator is configu...  
WO/2008/113458A2
The invention relates to a method and a device for detecting the rotation of a brush-operated d.c. motor (1) comprising a number of winding branches (3) which are electrically connected between brushes (6, 7), during the operation of the...  
WO/2008/109328A1
A single low side power transistor switch is used to efficiently control a brushed motor in a. forward rotational direction. A boost voltage power supply is used to supply voltage to the brushed motor in a reverse rotational direction or...  
WO/2008/022841A3
The invention relates to a method for determining the rotation speed (n) of a starter (1) for starting internal combustion engines. The starter rotation speed (n) can be determined in a particularly simple and cost-effective manner by be...  
WO/2008/105333A1
[PROBLEMS TO BE SOLVED] An actuator voltage control method in DC driving of a DC driving source is provided for making it possible to significantly improve an acceleration disturbance eliminating performance, so that the positioning prec...  
WO/2008/016744A3
A method, apparatus or computer program (FIG 4) implements an overload prevention approach involving monitoring a speed (410) o a motor, detecting an overload (420) condition of the motor based on the monitored speed, and controlling an ...  
WO/2008/095750A1
The invention relates to an apparatus for adjusting an actuator in a motor vehicle, having a DC motor (M) which is operatively connected to the actuator, a drive circuit (AS) which is connected to the DC motor (M), an inductive component...  
WO2008064759A8
The invention relates to a high pressure cleaning device with an electric motor and a pump driven by said electric motor for the delivery of pressurized cleaning fluid, wherein the electric motor contains a coil mechanism with at least o...  
WO/2008/089591A1
By a control system and a control method for a brushless DC motor and an inverter module thereof, it will be realized that a squarewave brushless DC magnetoelectric machine can be controlled in the form of current closed-loop. The cathod...  
WO/2008/027874A3
A current limiting DC motor starter (FIG 7a) employing a closed loop current measurement (58) to provide precise current control that adapts to changing motor conditions, integrated (104, 106) with a solid state reversing motor starter T...  
WO/2007/070814A3
Methods and apparatus are provided for generating zero- sequence voltages based on voltage commands and a motor output signal. At least one of the methods includes, but is not limited to, receiving a torque command and generating three-p...  
WO/2008/009827A3
Supply circuit (3) for an electric apparatus (1) having a positive supply line (5) and a negative supply line, to which lines a polarity inversion detection module (18), an inrush current module (18) and a capacitive filter element (14) ...  
WO/2008/006727A3
The invention relates to a circuit arrangement for measuring the current consumption of a pulse-width modulation controlled direct-current motor (M) fed by a direct voltage supply system (14,16), in particular a drive motor for a cooling...  

Matches 351 - 400 out of 23,244