Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 401 - 450 out of 22,665

Document Document Title
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/2009/034223A1
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/2009/007175A2
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/2008/130560A1
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...  
WO/2007/103109A3
A cordless power tool (300) has a transmission (12) having multiple speed ranges In the light torque range, the speed of a motor (8) of the cordless power tool is held constant to hold an output speed of the transmission (12) constant un...  
WO/2008/080474A1
An adjustment system for a motor vehicle, particularly with a window opener or a motor vehicle lock, comprises an electric motor (2) mechanically coupled to an adjusting mechanism, and a relay (5) electrically connected to the electric m...  
WO/2008/077898A1
A controller for electrically adjustable furniture comprises a supply device (10), which is coupled to system terminals (12) via a system isolating relay (13) and is used for producing a voltage present at supply terminals (11). The syst...  
WO/2008/069359A2
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/2008/070382A2
Provided are a method, computer-readable medium, and system for automatically determining a proper operational current input to an electric motor. In an exemplary embodiment, a method for determining the proper operational current input ...  
WO2007070814A9
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/2008/064759A1
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...  
WO2008039287B1
A self propelled upright vacuum cleaner (10) is provided with a Hall effect sensor (310) to provide a Hall voltage that varies according to the position of a handgrip (114) maintained by the vacuum cleaner (10). A microprocessor generate...  
WO/2008/064075A2
A portable electric appliance (1, 23) such as a hand held hair dryer uses a brushless electric motor (13, 25) in combination with a secondary fan assembly (14) and/ or an air scoop (24) to redirect air toward the motor (13, 25), to maint...  
WO/2008/061126A2
Methods and apparatus to lock a phase lock loop to a spindle motor (102) are disclosed. An example controller (104) comprises a counter (108) to determine a period of an operating signal received from a motor, an oscillator (114) to gene...  
WO/2008/048618A2
A device includes a housing configured with a working element. The device also includes a motor configured for urging motion of the working element. The device also includes a power control module which may be electrically connected with...  
WO/2008/046829A1
Method for determining the angular position of the rotor of a mechanically commutated DC servo motor (5), which is arranged in the transverse branch of a bridge circuit, and the armature current of which is preset by an electromechanical...  
WO/2008/048615A2
A device includes a housing configured with a working element. The device further includes a motor configured for urging motion of the working element. The device further includes a power control module. The power control module is confi...  
WO/2008/043238A1
An H-bridge control system comprises a main control unit MCU (6), an H-bridge driver and protection circuit (1) for driving a motor, an H-bridge driving circuit (2) for driving the H-bridge driver, detecting units (3,4,5,8) for various d...  
WO/2008/041504A1
A small-sized electric actuator capable of controlling the position and movement speed of a rod by a simple structure. In the electric actuator (1), rotation of an electric motor (3) as the drive source is reduced in speed by a reduction...  

Matches 401 - 450 out of 22,665