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Patent Searching and Data


Matches 501 - 550 out of 23,247

Document Document Title
WO/2006/084520A1
The invention relates to a method and a circuit arrangement for recording a current of a pulse-width modulation-controlled electric motor (10) which is powered by a constant voltage supply network and connectable thereto by means of a se...  
WO/2006/069635A2
The invention relates to a method for determining the position of an actuating unit that is operated by an electric motor. According to said method, a rotational speed of a motor is determined from a motor model, the rotational speed pre...  
WO/2006/068116A1
A motor driving apparatus by which a motor start time is shortened. In the motor driving apparatus (100), a control section (110) detects a number of rotations of a motor to be driven, and a control voltage (Vcnt) is generated to have th...  
WO2006012051A3
Electrically powered devices are provided that are generally capable of automatically adjusting an operating speed of a tool removably connected to the device. The device includes circuitry that evaluates tool wear for the tool removably...  
WO/2006/067975A1
There is provided motor drive capable of setting the r.p.m. of a fan motor flexibly depending on the temperature. In a fan motor drive circuit (100) for driving a motor based on a pulse modulated external control signal CNText, a tempera...  
WO/2006/061282A1
The invention relates to a method for determining the speed of an electric machine (M) having a protective resistor (RV). The inventive method is characterized by establishing a ratio of the machine voltage (UM) to the protective resisto...  
WO/2006/058509A1
The invention relates to a method for determining the charge of an electric drive motor (2) which is coupled thereto in order to drive said motor. The aim of the invention is to identify a surcharge in an economical and reliable manner. ...  
WO2006018503A3
The invention relates to a device for piloting an electric motor (20) for driving a mobile conductor element (18) of a power switch connected to a power circuit (28) connected to two terminals (P, M) of an electrical battery pack, especi...  
WO/2006/054581A1
In a swing control device mounted on a motorized swing shovel (construction machinery), when a quick operation by a swing lever causes the abrupt rise or fall of a lever signal, a gradient corresponding to rise time Ta1 or fall time Tb1 ...  
WO/2006/054582A1
A rotation control device (50) of an electrically rotated shovel performs control of a rotating body by a small first torque command value T1 when the rotating body is rotated at constant speed. Therefore, variation in inertia moment of ...  
WO/2006/048023A1
A drive mechanism has a reversible electric motor, which can be short-circuited to stop the rotation of the motor. Hereby higher precision can be achieved. A magnetic brake has a rotor, which has one or more neutral angular positions rel...  
WO/2006/047826A1
A method and apparatus are disclosed for determining airflow through a PAP device while applying PAP therapy. The actual speed of a blower 6 is measured. The desired motor current I DES required for the actual speed to approach or mainta...  
WO/2006/045815A1
The invention relates to a method for operating an electromechanical actuating unit, which is formed, in essence, of an electronic control unit and of at least one electric motor. The electric motor is controlled by the electronic contro...  
WO2005108185A3
A control system for a powered wheel chair drive modulates a pulse power delivery signal such that power is delivered gradually at throttle positions corresponding to a low speed, and power is delivered more rapidly at throttle positions...  
WO/2006/042893A1
The invention relates to a control method and system comprising an electronic control unit (11) which manages the electric current supply from an electric power source to a motor/compressor group (12, 13). The aforementioned electronic c...  
WO/2006/042259A2
An access control mechanism such as a movable barrier operator (70) has a first time window unit (72) that is responsive to one or more triggers (71) (such as a delayed-closure button). An event detector (73) then monitors for one or mor...  
WO/2006/039662A2
Featured is a controller for a motor that is ultra-compact, with a power density of at least about 20 watts per cubic cm (W/cm3).The controller utilizes a common ground for power circuitry, which energizes the windings of the motor, and ...  
WO/2006/034733A1
The invention relates to a device (10) for the incremental control of at least one first direct-current motor (12) for the cooling fan of a motor vehicle. Said device comprises a first (14) and a second current-limiting component (16), a...  
WO/2006/034217A1
A battery-powered vehicle for transporting a mined payload or supplies over the roadways existing in or around an underground mine, includes variable voltage, variable frequency drivers that convert DC voltage from a battery into an AC v...  
WO/2006/033214A1
A fan motor drive device capable of flexibly setting the rotational speed of a cooling fan. The fan motor drive device (100) drives the fan at the number of revolutions based on a control voltage (Vcont) and an ambient temperature (Ta) t...  
WO/2006/031839A2
A multi-phase unipolar motor is configured such that each stator pole is formed with bifilar wound primary and inductively associated secondary windings corresponding with one phase. The primary winding at one stator pole corresponding w...  
WO/2006/028861A2
A variable speed electric motor to drive a variable load over a substantially continuous range of speed. The motor has a plurality of winding combinations that may be switched into and out of the motor circuit. A torque controller select...  
WO/2006/024555A1
The invention relates to a circuit arrangement and to a method for operating an electric motor (10) with varying rotational speed on a constant-voltage source (18, 20), in particular, for operating a cooling air blower motor of a motor v...  
WO/2006/021634A1
The invention concerns a monitoring device comprising means (32) for generating a supply voltage of the electric motor (20) based on a battery voltage including means, activated when the battery voltage is higher than a predetermined thr...  
WO/2006/018503A2
The invention relates to a device for piloting an electric motor (20) for driving a mobile conductor element (18) of a power switch connected to a power circuit (28) connected to two terminals (P, M) of an electrical battery pack, especi...  
WO/2006/018700A1
The method for supplying a motor with direct current from a voltage source via two relays is characterized in that it comprises a first transitory stage wherein the two relays are in a rest position, wherein one of the relay coils is sup...  
WO/2006/011938A2
A method consistent with an embodiment may include selecting one of a plurality of components of a power supply system of a cordless power tool to be a protected weak link element. The method may also include configuring the protected we...  
WO/2006/012051A2
Electrically powered devices are provided that are generally capable of automatically adjusting an operating speed of a tool removably connected to the device. The device includes circuitry that evaluates tool wear for the tool removably...  
WO/2006/009847A1
The present invention provides electrical devices that derive power from an incoming power source to produce output power to drive the device. The device includes circuitry or other means for determining at least one characteristic of th...  
WO/2006/005563A1
The invention relates to a quenching device (LOV) for a converter bridge (SRB) with line regeneration, whereby the converter bridge controlled by a network-timed control circuit (AST) by ignition pulses is connected with its three inputs...  
WO2005112221A3
A cordless power tool may include tool identification circuitry to provide a tool identification signal to a battery pack. The tool identification signal may be representative of data particular to the cordless power tool. A method may i...  
WO/2006/005564A1
The invention relates to a method for controlling a quenching device (LOV) for a converter bridge (SRB) with line regeneration, whereby the converter bridge controlled by a network-timed control circuit (AST) by ignition pulses is connec...  
WO2005104332A3
In a resonant motor system, an electrical motor 10 having a stator 14 with one or more windings, a rotor 12 which may or may not be wound, and an air gap 16 between the stator 14 and the rotor 12 for storing magnetic energy such that the...  
WO/2006/001480A1
A control unit of a motor driver automatically operates a linear motion device according to a given drive condition. An error judgment value setting unit samples the peak of the current supplied to the linear motor during the automatic o...  
WO/2006/001479A1
A control unit of a motor driver feedback-controls current supplied to a linear motor according to a detection value of a linear encoder. An error detection unit monitors current supplied to the linear motor and detects an error of a lin...  
WO/2005/124960A1
Disclosed are a method and the use of a device which is operated according to said method in order to detect a blockage of a DC motor (10), especially a DC motor (10) for a motor vehicle fan. According to the invention, the DC motor (10)...  
WO/2005/124991A1
Disclosed is a circuit arrangement and a method for adjusting the power input of a load, particularly a load of a cooling fan motor (10) of a motor vehicle, which can be operated on a direct current supply network (13,15), comprising at ...  
WO2004098261A3
A controller (28) for a doubly fed induction generator (12, 20) adjusts control signals to a rotor side converter (24) and line side converter (22) to adjust rotor current when a voltage transient on a utility grid (10) occurs, so that t...  
WO/2005/121890A1
An actuator drive circuit for a shutter capable of operating an actuator with high precision. The actuator drive circuit (1) for shutter comprises a counter (12) which starts counting frequency division clocks produced by dividing the fr...  
WO/2005/122368A1
A moving magnet linear slider in which the effect of microvibration is minimized at the time of driving a linear motor, the servo gain can be increased easily, and the speed ripple can be suppressed. The moving magnet linear slider compr...  
WO/2005/121710A1
A position sensor generates a signal representative of the angular position and, if desired, angular velocity of a rotating object using only a single circular track and plural brushes that ride on the track when the object rotates. The ...  
WO/2005/117250A1
A coil load driving circuit capable of suppressing occurrence of radiant noise when a motor is at rest. The coil load driving circuit (1) comprises output buffers (11,12) for outputting PWM pulses to the two terminals of a motor (5); a t...  
WO/2005/112221A2
A cordless power tool may include tool identification circuitry to provide a tool identification signal to a battery pack. The tool identification signal may be representative of data particular to the cordless power tool. A method may i...  
WO/2005/108185A2
A control system for a powered wheel chair drive modulates a pulse power delivery signal such that power is delivered gradually at throttle positions corresponding to a low speed, and power is delivered more rapidly at throttle positions...  
WO/2005/109611A1
The invention relates to a commutator motor (1), which has a series excitation or shunt excitation and which, in particular, is suited for use as a drive motor for a washing drum of a laundry treatment device. The stator (4) of a commuta...  
WO/2005/107048A1
The invention relates to electrical engineering, in particular to valve electric drives fed by a DC-voltage source. The inventive valve electric drive comprises an electric motor whose stator is provided with a closed-coil distribution w...  
WO/2005/104332A2
In a resonant motor system, an electrical motor 10 having a stator 14 with one or more windings, a rotor 12 which may or may not be wound, and an air gap 16 between the stator 14 and the rotor 12 for storing magnetic energy such that the...  
WO2005062455A8
The invention relates to a device for power adjustment, by phase control of an alternating current, supplying an electrical user (14) and for reduction of the harmonic waves arising from the phase control, in particular, up to the region...  
WO/2005/094124A1
A motor (20) moves a fader (18). A motor driver (22) drives the motor (20). A switch circuit (26) is connected to the voltage control terminal of the motor driver (22). The switch circuit (26) switching-operates so as to selectively supp...  
WO/2005/088827A1
There is provided a motor including magnetic pole means having a plurality of coil strings alternately excited to different poles to which is faced a permanent magnetic pole string having permanent magnetic pole elements of alternately d...  

Matches 501 - 550 out of 23,247