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Patent Searching and Data


Matches 501 - 550 out of 22,665

Document Document Title
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/2007/013320A1
In a PWM controlled motor, a motor frequency f is detected (S1), and then a PID control Duty value is calculated (S2) and a basic limit Duty value Max.Duty(1) is set (S3). Max.Duty value at -40°C is used in the Max.Duty(1). Motor temper...  
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...  
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...  

Matches 501 - 550 out of 22,665