| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 318471000 |
Responsive to thermal conditions
| 132 |
| 318452000 |
Plural, diverse conditions or with time-delay means
| 57 |
| 318461000 |
Speed or rate-of-movement
| 48 |
| 318466000 |
Movement, position, or limit-of-travel
| 39 |
| 318478000 |
Electrical conditions in circuit other than controlled motor circuit
| 28 |
| 318474000 |
Motor load, armature or primary or secondary circuit current
| 24 |
| 318460000 |
Sound, supersonic vibration or mechanical vibration
| 17 |
| 318446000 |
With nonautomatic control means (e.g., manual)
| 12 |
| 318449000 |
With respect to a fixed standard, master or reference device
| 11 |
| 318484000 |
Time or with time-delay means
| 8 |
| 318483000 |
Moisture content or wetness
| 8 |
| 318459000 |
Terminal voltage or counter-electromotive force of controlled motor
| 7 |
| 318480000 |
Radiant energy | 5 |
| 20100090634 | Method and apparatus for connecting a photovoltaic system to a power grid - An apparatus and a method for preparing connection of a photovoltaic system (Q | 04-15-2010 |
| 20120133315 | AUTOMATED SHADE CONTROL IN CONNECTION WITH ELECTROCHROMIC GLASS - Automated shade systems may comprise motorized window coverings, sensors, and controllers that use algorithms to control operation of the automated shade control system. These algorithms may include information such as: 3-D models of a building and surrounding structures, shadow information, reflectance information, lighting and radiation information, information regarding one or more variable characteristics of glass, ASHRAE clear sky algorithms, log information related to manual overrides, occupant preference information, motion information, real-time sky conditions, solar radiation on a building, a total foot-candle load on a structure, brightness overrides, actual and/or calculated BUT load, time-of-year information, and microclimate analysis. | 05-31-2012 |
| 20120181967 | PERMANENT MAGNET ELECTRIC MACHINE HAVING AN INTEGRATED MAGNETIC FLUX SENSOR - A permanent magnet electric machine that includes a housing, a stator mounted within the housing, a rotor assembly, a plurality of permanent magnets mounted within the rotor assembly, and a magnetic flux sensor arranged within the housing. The magnetic flux sensor includes a sensing surface configured and disposed to detect magnetic flux leaking from the rotor assembly. | 07-19-2012 |
| 20130063065 | AUTOMATED SHADE CONTROL SYSTEM UTILIZING BRIGHTNESS MODELING - Automated shade systems comprise motorized window coverings, sensors, and controllers that use algorithms to control operation of the automated shade control system. These algorithms may include information such as: 3-D models of a building and surrounding structures, shadow information, reflectance information, lighting and radiation information, ASHRAE clear sky algorithms, log information related to manual overrides, occupant preference information, motion information, real-time sky conditions, solar radiation on a building, a total foot-candle load on a structure, brightness overrides, actual and/or calculated BTU load, time-of-year information, and microclimate analysis. Modeled brightness information may be utilized to control shades. | 03-14-2013 |
| 20130207585 | FURNITURE HAVING AN ELECTROMOTIVE ADJUSTMENT MEANS - An electromotive adjustment device for a piece of furniture having an adjustable furniture part. The electromotive adjustment device includes a housing, a drive gear motor, a control device having a device housing, and at least one drive unit having an output member connected to the adjustable furniture part. The drive gear motor is configured to be one of brought to a standstill and reversed by a safety device during the occurrence of a pinching between one or more of two furniture parts, a furniture part and a component, and a furniture part and a part of a person's body. The safety device includes a light transmitter configured such that a light beam directed against one of the adjustable furniture part and the component and the light beam is reflected to meet a light receiver. | 08-15-2013 |
| 318456000 |
Rate-of-change of a condition | 2 |
| 20150042254 | MOTOR- DRIVEN APPLIANCE - A motor-driven appliance of one aspect of the present disclosure includes a motor and a controller. The controller includes a physical quantity detector, a variation deriving portion, a loaded condition detector, and driving output portion. The physical quantity detector detects a physical quantity related to an operating state of the motor. The variation deriving portion derives a variation in the physical quantity based upon the physical quantity detected by the physical quantity detector. The loaded condition detector detects that the motor is under a loaded condition in which the motor is applied with a load based upon the variation derived by the variation deriving portion. The driving output portion generates the driving output corresponding to whether the loaded condition is detected by the loaded condition detector. | 02-12-2015 |
| 20160065110 | ACCELERATION ESTIMATOR FOR SPEED RATE CONTROL - Embodiments of the present invention are directed to a controller that is configured to limit the rate of change of speed of a motor (e.g., the acceleration or deceleration) regardless of the operating mode of the motor (e.g., speed, torque, or power control mode). The controller can include an acceleration estimator which monitors the output speed of a motor and provides an acceleration-limited speed set point. The output of the acceleration estimator may be limited to a range of acceptable acceleration values that correspond to the required limits of acceleration and deceleration. The acceleration estimator can be configured such that it causes the speed regulator to override the torque and/or power regulators when the acceleration range is exceeded. | 03-03-2016 |
| 318447000 |
Nonresponsive or less responsive for limited periods | 1 |
| 20110089878 | MOTOR DRIVE DEVICE WITH LOCK PROTECTION FUNCTION - A cooling system is provided with a motor drive device, a fan motor, and a Hall element. The motor drive device includes a lock protection circuit and a lock controller. When a control signal instructing rotation of the fan motor that is to be driven instructs stoppage of the motor for a predetermined time-period or longer, the lock controller has the lock protection circuit inactive. At an occasion when the control signal has continued to instruct stoppage of the fan motor for a first time-period or longer, a standby controller starts time measurement, and after a further predetermined second time-period has elapsed, makes at least a part of the motor drive device transition to a standby mode. | 04-21-2011 |
| 318488000 |
Responsive to stress in body or material | 1 |
| 20130015802 | METHOD FOR DISCHARGING CHARGES REMAINING IN CAPACITOR IN DRIVE APPARATUSAANM HIROSE; SatoshiAACI Miyoshi-shiAACO JPAAGP HIROSE; Satoshi Miyoshi-shi JP - A PCU drives a motor generator using electric power from a power storage device. The PCU includes a power conversion device, a capacitor and a control unit. When detecting a crash, the control unit drives the power conversion device and discharges charges remaining in the capacitor. Each of a plurality of reverse conducting-type semiconductor elements included in the power conversion device is integrally formed of a first semiconductor element operating as a switching element and a second semiconductor element operating as a free wheeling diode. In response to detection of the crash of a vehicle, the control unit changes a voltage applied to a gate terminal of the first semiconductor element and increases an electric power loss during a current-circulating operation by the second semiconductor element. As a result, the remaining charges stored in the capacitor in the drive apparatus is discharged as soon as possible. | 01-17-2013 |
| 318489000 |
Responsive to direction, inclination or angular position of bodies | 1 |
| 20130049665 | DRIVE SYSTEM FOR ROTATING ELECTRIC MACHINE - A MG drive computer switches off system relays when a collision or a possibility of collision is detected. The computer also executes the revolution speed reduction control for reducing the revolution speed of a rotating electric machine and the discharge control for discharging a smoothing capacitor. In the revolution speed reduction control, the second control for switching on switching elements of three phases of an upper arm or lower arm of an inverter and switching off all other switching elements is performed when the revolution speed of the rotating electric machine is equal to or less than a second threshold. When the revolution speed is higher than the second threshold, the first control for switching on a switching element of one phase of the upper arm or lower arm and switching off other switching elements is performed. | 02-28-2013 |
| 318448000 |
Anti-hunting | 1 |
| 20120262102 | Phase Delayed Active Motor Damping to Mitigate Electric Vehicle Driveline Oscillations - An active motor damping system and method for dampening oscillations of a driveline in a vehicle includes generating a commanded torque indicative of an actual torque which would counteract the oscillations if delivered by a motor to the driveline. The commanded torque is adjusted as a function of a phase lag between the commanded torque and an actual torque which the motor would deliver in response to the commanded torque such that in response to the adjusted commanded torque the motor delivers the actual torque which counteracts the oscillations. | 10-18-2012 |
| 318482000 |
Level of fluid or granular material | 1 |
| 20140320054 | ELECTRICAL OUTLET WITH DRAINING MECHANISM - An electrical outlet for receiving an electrical plug is illustrated. The electrical outlet includes a housing defining a recess for receiving the electrical plug and a closed groove in a bottom of the recess, and a draining mechanism accommodated in the housing. The draining mechanism includes a barrel, a first sliding member, and a first driver. The barrel defines a first sliding groove and a slot communicating with both the first sliding groove and the closed groove. The first sliding groove includes a first, external open end and an opposite second open end. The first sliding member includes a first rod slidably retained in the first sliding groove through the second open end. The first driver is configured to drive the first sliding member to slide along the first sliding groove for pushing liquid out of the first sliding groove through the first open end. | 10-30-2014 |
| Entries |
| Document | Title | Date |
|---|
| 20090189560 | HIGH TORQUE GEARLESS ACTUATION AT LOW SPEEDS FOR SWING GATE, ROLL-UP GATE, SLIDE GATE, AND VEHICULAR BARRIER OPERATORS - The invention is a system for gearless operation of a movable barrier utilizing Lorentz forces, and in particular, a movable barrier operator retrofitted with a gearless motor capable of high torque at very low speeds. Eliminating a gear system in accordance with the present invention lowers maintenance requirements, increases efficiency, and streamlines operation of any movable barrier. By utilizing a motor which produces high-torque at low a speeds a system in accordance with the present invention does away with the need for complicated gears and pulley systems in order to achieve control of movable barriers. The present invention allows manufacturers, distributors and consumers to implement movable barrier systems with much more versatility and efficiency. | 07-30-2009 |
| 20090218977 | Electric drive system with redundancy - Circuit configurations for controlling an AC motor drive system wherein the control systems include redundancy features to compensate for possible failed system components. | 09-03-2009 |
| 20090261767 | Universal apparatus and method for configurably controlling a heating or cooling system - A system controller is disclosed that includes a communication means for transmitting and receiving information from an installed blower motor controller, and a removable memory device connected to the system controller. The removable memory device includes system parameter information stored thereon that relates to the particular heating or cooling system, where the system parameter information includes at least motor related parameters relating to the operation of one or more types of blower motors. The system controller further includes a processor configured to receive via the communication means the communication of identifying information from the blower motor controller that identifies the type of blower motor installed in the system. The processor is configured to retrieve motor related parameters corresponding to the specific identified blower motor controller from the memory device, and to send said corresponding motor related parameters to the blower motor controller. | 10-22-2009 |
| 20100072931 | Motor Arrangement - The invention relates to a motor arrangement ( | 03-25-2010 |
| 20100109591 | Heat dissipation device and fan module thereof - A heat dissipation device has a main controller and a fan module having a motor coil, a connection interface, a PWM driving circuit and a fan monitor chip. The connection interface has a control pin, an error report pin, a power supply pin and a ground pin. The control pin receiving a control signal. The PWM driving circuit adjusts current magnitude and current direction of the motor coil to drive the fan module. The fan monitor chip is connected to the connection interface and the PWM driving circuit, receives the control signal, generates and sends PWM signals to the PWM driving circuit according to the control signal and sends an acknowledgement signal via the control pin after receiving the control signal. The main controller can check if the control signal is correctly received based on the acknowledge signal. | 05-06-2010 |
| 20110006716 | METHOD FOR PROTECTING AN ELECTRONIC DEVICE DRIVEN BY DC MOTOR AND CIRCUIT FOR DETECTING POSITIONING SIGNALS THEREOF - A method for protecting an electronic apparatus driven by a DC motor and a detection circuit for detecting positioning signals thereof. The electronic device includes an optical encoder, a code strip, and a DC motor. While moves along the code strip, the optical encoder outputs a first positioning signal and a second positioning signal for the control of the DC motor. The method includes the steps described below. First, states of the first and second positioning signals are detected. If the states of the first and second positioning signals are normal, the DC motor is controlled according to the first and second positioning signals. If the first positioning signal or the second positioning signal is abnormal, a preventive method is performed. | 01-13-2011 |
| 20110204836 | SHAFT ROTATOR FOR STORED EQUIPMENT WITH ANTI-FRICTION BEARINGS - Invention rotates the shaft of stored and/or stand-by rotating equipment to intervene in the false brinelling and/or lubricant separation process, thus eliminating and/or minimizing the subsequent premature bearing failure when the equipment is placed in service. | 08-25-2011 |
| 20120146562 | PWM CONTROL CIRCUIT AND MOTOR EQUIPPED WITH THE SAME - The PWM control circuit is provided. The PWM control circuit includes: a PWM control signal generator that generates a PWM period signal defining a period of a PWM signal and a PWM resolution signal specifying a resolution in one period of the PWM period signal; and a PWM unit that generates the PWM signal based on the PWM period signal and the PWM resolution signal, wherein the PWM control signal generator changes a frequency of the PWM resolution signal while keeping a frequency of the PWM period signal unchanged. | 06-14-2012 |
| 20130038264 | METHOD OF FAN SPEED CONTROL - In a method of fan speed control, a flow value corresponding to airflow amount through a fan during operation of the fan is detected with a fan controller. The flow value and a preset value are subsequently compared, and when the flow value is less than the preset value, a pulse-width-modulation (PWM) signal is outputted to increase rotation speed of the fan. | 02-14-2013 |
| 20130113404 | COMMUNICATION POWERED BUILDING AUTOMATION SYSTEM ACTUATOR - An actuator includes at least one drive arrangement configured to generate output mechanical power from input electrical power. The actuator also includes a communication line port and a processing device. The at least one drive arrangement is configured to generate output mechanical power from input electrical power. The communication line port is configured to connect to a communication line, and is further configured to obtain electrical power from the communication line. The processing device is configured by programming instructions to obtain a first information from the communication line via the communication line port, and to adjust an operation of the at least one drive arrangement based on the first information and based upon information identifying electrical power available for use as input electrical power. | 05-09-2013 |
| 20130113405 | METHOD AND DEVICE FOR SAFETY CUTOFF OF AN ELECTROMECHANICAL STEERING SYSTEM - The invention relates to a method of safety cutoff of an electromechanical motor vehicle power steering, in which safety switches ( | 05-09-2013 |
| 20130181649 | COMPONENT FOR A NETWORK SYSTEM - Provided is a component for a network system, which includes a communication device for receiving at least energy information, a component driver part driven by supplied energy, and a control part that recognizes high price-related information or low price-related information, based on the energy information received by the communication device and that controls the component driver part. A method of controlling the component driver part when the high price-related information is recognized is different from a method of controlling the component driver part when the low price-related information is recognized. | 07-18-2013 |
| 20130200833 | CONTROL METHOD OF WASHING MACHINE - Disclosed is a control method of a washing machine. The method includes performing first-stage rotation in which a drum is rotated at a predetermined rotational speed, performing second-stage rotation in which the drum is rotated at a first target RPM when a predetermined time has passed after the first-stage rotation ends, performing deceleration rotation in which the rotational speed of the drum is kept at a lower value than in the second-stage rotation, and performing third-stage rotation in which the drum is rotated at a second target RPM that is greater than the rotational speed of the drum in the deceleration rotation. Accordingly, it is possible to prevent laundry from being adhered to an inner surface of the drum during removal of moisture contained in laundry, and to achieve an increased contact area between laundry and hot air via uniform dispersion of laundry, resulting in enhanced laundry drying performance. | 08-08-2013 |
| 20130200834 | CONTROLLING METHOD OF LAUNDRY DEVICE - There may be disclosed a controlling method of a laundry treating apparatus including a low speed rotation step of rotating a motor configured to rotate a drum mounted in a tub at a low speed; and a high speed rotation step of rotating the motor at a high speed, the high speed rotation step implemented after the low speed rotations step, wherein the high speed rotation step comprises an acceleration period in which a RPM of the motor is increased after the RPM of the motor reaches a target RPM of the low speed rotation speed, such that the amount of the additionally supplied wash water may be reduced and that the washing course can be implemented, using a small amount of wash water. | 08-08-2013 |
| 20140021899 | Driving circuit and method for fan - A driving circuit for driving a fan with a plurality of operational modes includes an initiation module for generating a switch signal according to a feedback signal, a control module coupled to the initiation module for utilizing a pulse frequency modulation technique to generate a control signal according to the switch signal and a predetermined comparison signal, so as to drive the fan for a rotational operation, and a feedback module coupled to the fan for generating the feedback signal according to a conduction result of the fan. The rotational operation includes the plurality of operational modes, and the fan is switched between the plurality of operational modes according to different conduction results of the fan. | 01-23-2014 |
| 20150115854 | MOTOR SPEED CONTROL WITH SPEED FOLDBACK FOR PHASE IMBALANCE PROTECTION - A variable frequency motor drive comprises a converter including a rectifier having an input for connection to an AC power source and converting the AC power to DC power. A DC bus is connected to the rectifier circuit. At least one bus capacitor is across the DC bus. An inverter receives DC power from the DC bus and converts the DC power to AC power to drive a motor. A controller is operatively connected to the converter. The controller comprises a speed control controlling the inverter responsive to a speed command to maintain a desired motor speed. A speed foldback control measures DC bus ripple voltage and regulates the speed command responsive to the measured DC bus ripple voltage. | 04-30-2015 |
| 20160141865 | POWER STRUCTURE DIAGNOSTIC METHOD AND APPARATUS FOR IMPROVED MOTOR DRIVE DIAGNOSTIC COVERAGE - Motor drive diagnostic and control methods and apparatus are provided in which rectifier and inverter switching devices are individually monitored for malfunctions, and detected malfunctions initiate implementation of a safety function to signal a drive controller to shut down non-safety-related processing, to discontinue command pulse signaling to the switching devices, and to disable optical transmitters between the drive controller and the rectifier and inverter switches, and an input contactor or other switching circuit is opened to disconnect input power from the motor drive after implementation of the safety function. | 05-19-2016 |
| 20180026557 | BALANCING CURRENT WITHIN A PARALLEL MODULAR CONVERTER SYSTEM | 01-25-2018 |
| 20190144070 | HUMAN-POWERED VEHICLE CONTROL DEVICE | 05-16-2019 |
| 20220140702 | METHODS FOR ANALOG TEMPERATURE COMPENSATION OF BIAS AND OFFSETS OF A DIFFERENTIAL SENSOR - A measurement circuit that is configured to provide a torque reading to a motion controller includes an offset controller and an amplifier. The offset controller is configured to read a temperature signal and to generate an offset voltage in response to receiving the temperature signal. The amplifier is configured to read a differential voltage from a differential sensor and to receive the offset voltage from the offset controller. The amplifier is also configured to add the offset voltage to the differential voltage after applying a gain to the differential voltage to generate an adjusted voltage. The amplifier is then configured to transmit the adjusted voltage. | 05-05-2022 |
| 20220140756 | METHOD FOR OPERATING A SYSTEM COMPRISING AT LEAST TWO MECHANICALLY COUPLED ASYNCHRONOUS MOTORS, COMPUTER PROGRAM CONTAINING AN IMPLEMENTATION OF THE METHOD AND SYSTEM OPERATING IN ACCORDANCE WITH THE METHOD - A method for operating a system having at least two mechanically coupled asynchronous motors, a computer program implementing the method and a system operating in accordance with the method are disclosed. One asynchronous motor is selected as master, with the other asynchronous motor(s) selected as slave(s). An effective (master) flux angle is measured in the motor selected as master and used as a basis for a setpoint value for controlling the flux angle of every other motor (slave) in the system. The flux angle of every slave motor is adjusted to the setpoint value as part of the control operation. | 05-05-2022 |
