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Patent Searching and Data


Matches 451 - 500 out of 23,244

Document Document Title
WO/2007/084911A2
Methods and devices for determining position and/or angular orientation of a rotating shaft (112). Exemplary features include sensor module (120/340) and position determination module (335). Sensor module (120/340) may include Hall Effec...  
WO/2007/081676A2
Systems and methods of detecting an overload condition. In one embodiment, a method of monitoring a load of a DC motor includes intermittently de-energizing the motor; monitoring a first voltage; and measuring a first interval of time be...  
WO/2007/074103A1
The present invention relates to a control method and a washing machine (1) thereof comprising a motor (2) with a common terminal (C) which facilitates the usage of the whole coil (6) during the washing process and only a part of the coi...  
WO/2007/071520A1
The invention relates to a method and a device for controlling and/or regulating an electric motor. Such electric motors are used, for example, in motor vehicles, as pump motors. The electric motor is generally provided with electrical p...  
WO/2007/070932A1
A method of tuning a DC brushless motor, wherein measurement of back EMF voltage is used to detect changes in the torque requirements caused by variation in the operating conditions of the DC brushless motor, the method including varying...  
WO/2007/070814A2
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/2007/068711A1
The field of the invention is that of safety devices for operating the actuators of aircraft and more specifically the flight control actuators of a helicopter. The invention consists of a safety operating device for controlling an actua...  
WO/2007/066625A1
A drive signal generation circuit (1) generates drive signals SDH, SDL for controlling ON/OFF of a transistor of an H-bridge circuit (110) in accordance with a torque target value. According to the drive signals SDH, SDL outputted from t...  
WO/2007/063040A1
In order to prevent the vehicle battery from being discharged completely in the event of a faulty signal line (7) between an external signal source (8, 9) and a cooling fan (1) for a motor vehicle, it is proposed that a duplicated evalua...  
WO2007006482A8
The invention describes a circuit arrangement for actuating an electric motor in a motor vehicle, having two relays which each have a changeover contact, with the changeover contacts forming a bridge circuit for connecting the motor conn...  
WO/2007/037692A3
The invention relates to a regulator circuit for controlling the power fed to an electric motor from a voltage source, wherein the regulator circuit comprises a semiconductor switching element connected in series to the electric motor an...  
WO/2007/056255A2
A battery-powered tool (100) indicates to an operator that a torque limit has been reached. The tool comprises a driver circuit (312) for generating motor interface driving signals, a motor interface circuit (314) coupled to a motor (316...  
WO/2007/056370A2
A power tool includes solid-state motor control. The tool includes a solid state variable speed control signal generator for generating a variable speed control signal, a microcontroller for generating a pulse width modulated (PWM) signa...  
WO/2007/046120A1
The present patent application refers to an actuator for automotive climatization units, of the type designed to be driven by an electric control unit with direct current and low voltage, characterised in that it is provided with an elec...  
WO/2007/044913A2
A method varies motor torque inversely as a function of speed.  
WO/2007/015968A3
A kW-based torque controller for use with an AC induction motor has been developed that includes an AC-to-DC converter for receiving incoming three-phase power from a utility and converting the three-phase AC signal to a DC signal, a DC-...  
WO/2007/042359A1
The invention relates to a device for supplying pulse width-modulated output pulses for the motor of a fan. Said device comprises an arithmetic unit and at least one final output stage. The arithmetic unit and the final output stage are ...  
WO/2007/037692A2
The invention relates to a regulator circuit for controlling the power fed to an electric motor from a voltage source, wherein the regulator circuit comprises a semiconductor switching element connected in series to the electric motor an...  
WO/2006/098858A3
A powered panel moving system includes a motor, electronic drive circuitry, a mechanism, a coupler, and electronic function circuitry. The drive circuitry drives a rotor of the motor. The coupler couples rotational output of the rotor to...  
WO/2006/026682A3
Systems, methods, apparatus, computer readable medium and propagated signals are provided for controlling the position, orientation, movement, configuration and/or operation of one or more window coverings, doors, vanes, filters or other...  
WO/2007/036023A1
A method for determining an initial position of a rotor of a polyphase motor is described. The method comprises determining current change values from a plurality of phases of the motor during saturation of the motor relating to the init...  
WO/2006/011938A3
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/2007/029517A1
In an excess current protection circuit (23), a timer circuit (TMR) generates an excess current protection signal (EN) according to comparison results between a detection voltage Va (Vb) and a voltage VrefL and between the detection volt...  
WO/2007/005318A3
The torque of a motor (16) operated by an inverter circuit is controlled to allow maximum torque in the motor when the motor is stalled or at low rotation speeds. Control is accomplished by providing a switching frequency to the motor at...  
WO/2007/026559A1
A motor drive device (2) comprising an H bridge circuit (21) having four switching elements (QH1, QH2, DL1, DL2) connected in an H bridge form to a motor coil L, a control circuit (22) for on/off-controlling each switching element, and a...  
WO/2007/023016A1
The aim of the invention is to reduce the error rate of the electronic system of a motor vehicle. For this purpose, a device for controlling a radiator fan motor (M) in a motor vehicle comprises a control device (C) having a control circ...  
WO/2007/017483A1
Information for controlling the window-lifter can be determined by using the supply flow of a DC motor (M) which drives a window lifter. The invention relates to a simple-to-produce and construct electronic circuit (ES) which measures po...  
WO/2007/015968A2
A kW-based torque controller for use with an AC induction motor has been developed that includes an AC-to-DC converter for receiving incoming three-phase power from a utility and converting the three-phase AC signal to a DC signal, a DC-...  
WO/2007/012949A1
Controlling and adjusting of the operation of a device actuated by an electric motor are carried out by shutting down the electric power supply of said electric motor at a plurality of time intervals during the motor operation, measuring...  
WO/2007/006482A1
The invention describes a circuit arrangement for actuating an electric motor in a motor vehicle, having two relays which each have a changeover contact, with the changeover contacts forming a bridge circuit for connecting the motor conn...  
WO/2007/007794A1
In a motor undergoing PWM control, rotational frequency f of the motor is detected (S1), and then a PID control Duty value is calculated (S2) and a Max.Duty value is set (S3). Acceleration/deceleration state of the motor is judged from v...  
WO/2006/074214A3
An electric motor includes a rotation shaft (10) and an armature coupled to the rotation shaft. A commutator (25) is coupled to t rotation shaft and is electrically connected to the armature. At least two power brushes (40) are fixed rel...  
WO/2007/005318A2
The torque of a motor (16) operated by an inverter circuit is controlled to allow maximum torque in the motor when the motor is stalled or at low rotation speeds. Control is accomplished by providing a switching frequency to the motor at...  
WO/2007/001800A2
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/2006/135708A1
The present invention relates to a a unipolar current electrical machine operable as a switched reluctance motor, comprising a motor structure and a control unit. The motor structure comprises a plurality of disk-shaped annular stator el...  
WO/2006/131415A1
In order to control an electromotive drive MK/MBL, a control unit CU is proposed which has control modules CM1/CM2/CM3 for controlling half-bridge end power stages HB1/HB2/HB3. Two of the control modules CM1/CM2 are pre-configured for al...  
WO/2006/127112A1
Brushed DC electric motors have a rotor with commutator portions moving into and out of contact with brushes. As each of these contacts end, a back EMF force is induced into a main current supply signal. The number of these periodic forc...  
WO/2006/124010A1
A control system and method for an electric machine includes a first calculation module that receives a modified torque command and a calculated stator flux command and that generates first and second current commands and first and secon...  
WO/2006/107503A1
An electric motor control having reduced electromagnetic interference (EMI) emissions includes a motor controller, a switch, and a power converter. The motor controller upon receipt of a control signal causes the switch to toggle between...  
WO/2006/106003A1
The invention relates to a device and a method for controlling an electromechanical power converter (10), particularly of an electric motor and/or generator in which comparatively cost-effective switches (14, 18) can be used without dras...  
WO/2006/102859A1
The invention relates to a method and a device (1) for control of a commuted electric motor (2), whereby an operating voltage (UA) of the electric motor (2) is pulse width modulated and switching edges for the operating voltage (UA) are ...  
WO/2006/100139A1
The invention relates to a device and method for capturing a DC-motor residual voltage, wherein said DC-motor is driven by a clocked control. In a normal operation, the DC motor is driven by a PWM drive and a first predefinable pulse/pul...  
WO2006028861A3
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/2006/097390A1
The invention relates to a method and circuit arrangement for limiting a current consumption of a direct current motor supplied by a continuous voltage network, in particular a fan motor supplied by a motor vehicle voltage supply network...  
WO/2006/098858A2
A powered panel moving system includes a motor, electronic drive circuitry, a mechanism, a coupler, and electronic function circuitry. The drive circuitry drives a rotor of the motor. The coupler couples rotational output of the rotor to...  
WO/2006/092219A1
The invention relates to a ventilation appliance embodied as an exhauster hood (1), said appliance comprising a drive (40) for generating an air flow, an illumination device (310), and a control unit (220). Said control unit (220) genera...  
WO2006069635A3
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/2006/091289A1
A motor control system for a two-phase brushless DC motor (11; 111) uses measured EMF voltage (17; 117) from the passive set of stator coils (113, 114) to control commutation (19; 119) . A microcontroller (101) receives the EMF voltage m...  
WO/2006/089548A1
The present invention relates to a method for testing an electronic circuit comprising a plurality of switching elements arranged in a H-bridge configuration, the electronic circuit being adapted to drive an associated DC-motor operative...  
WO/2006/086980A1
The present invention relates to a method for ensuring a constant target speed of a battery driven electrical motor, the battery driven electrical motor being adapted to move a piston rod in an injection device so as to inject a set dose...  

Matches 451 - 500 out of 23,244