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2359results about How to "Increase rotation speed" patented technology
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DC brushless motor drive circuit with speed variable-voltage
ActiveUS8288984B2Increase inputOvercome increased inductive impedanceTorque ripple controlMotor/generator/converter stoppersBrushless motorsMotor drive
For the present invention, under various running speeds statuses, the voltage supplied to the DC brushless motor is relatively increased or decreased on the basis of the internal setting of the motor drive control device according to the increased or decreased rotational output speed, so as to prevent the shortcoming of too much variation of the input impedance caused by the inductive reactance of the winding accordingly changed when the speed of the DC brushless motor is changed, specifically, to prevent the shortcoming of unable producing required torque resulting from the increased inductive reactance caused by increasing the rotational speed which makes the current value become too low when input by the original working voltage.
Owner:YANG TAI HER
Six rotor helicopter
InactiveUS20100044499A1Desired directionIncrease and decrease altitudeUnmanned aerial vehiclesRemote controlled aircraftRotary wingHelicopter rotor
A rotary wing aircraft is provided having at least three rotor pairs. Each rotor pair has an upper rotor and a lower rotor. During operation, the upper rotor and lower rotor rotate around a shared rotor axis with the upper rotor rotating in a first direction and the lower rotor rotating in an opposite direction By independently controlling the speed of rotation of each upper rotor and each lower rotor the aircraft can be made to ascend, descend, move forward, move backward, move side to side, yaw right and yaw left by only varying the relative speeds of rotations of the upper rotors and lower rotors.
Owner:DRAGANFLY INNOVATIONS
Continuously variable transmission mechanism and transmission using the same
InactiveUS20110319222A1Increase rotation speedRotational radiusFriction gearingsRotation velocityControl theory
A continuously variable transmission adapted to set a speed change ratio in accordance with a tilt angle of a rolling member mediating a torque being transmitted, and to transmit a torque among three elements. The transmission mechanism is provided with a rolling member having a smooth outer face and capable of tilting a rotational center axis thereof, and a rotary member arranged to be contacted with a predetermined portion of the outer face of the rolling member in a torque transmittable manner. Specifically, the continuously variable transmission mechanism is configured to vary a rotational speed of the rotary member by changing a rotation radius of a contact point between the rolling member and the rotary member by tilting the rotational center axis of the rolling member.
Owner:TOYOTA JIDOSHA KK
Continuously variable transmission apparatus
A continuously variable transmission apparatus has clutch device having a low speed clutch; a high speed clutch; and, a controller switching the transmission state into any one of a low speed mode and a high speed mode by connecting any one of the clutches, wherein timings for signaling by the controller for switching the connected and disconnected states of the clutches vary according to the switching directions of the low speed and high speed modes; and, a timing for signaling for connecting the low speed clutch with respect to the moment for signaling for cutting off the connection of the high speed clutch in order to switch the high speed mode over to the low speed mode is set earlier than a timing for signaling for connecting the high speed clutch with respect to the moment for signaling for cutting off the connection of the low speed clutch.
Owner:NSK LTD
Continuously variable transmission system for vehicle
InactiveUS6494805B2Increased durabilityImprove performanceToothed gearingsFriction gearingsDrive wheelGear train
An engine is connected to a sun gear of a planetary gear train via a toroidal type continuously variable transmission. Driven wheels of a vehicle are connected to a ring gear of the planetary gear train. The sun gear and the ring gear are connected to each other by a first clutch. A shifter can connect a second clutch connected to the engine either to a carrier of the planetary gear train or the driven wheels. When the vehicle is started when a failure of the electronic central system has occurred, by engaging the first and second clutches with predetermined engagement forces while the second clutch is connected to the carrier by the shifter, change of the ratio of the toroidal type continuously variable transmission beyond either the LOW ratio or the OD ratio is prevented so as to avoid generating an excessive load.
Owner:HONDA MOTOR CO LTD
Natural gas turbine generator
ActiveUS7683499B2Minimize explosion hazardEliminating carbon bridging between connectionsMotor/generator/converter stoppersWindingsElectricityMomentum
A turbine generator utilizing a passive high pressure fluid source such as a natural gas well head. The generator includes a core and lead wires encapsulated in a dielectric medium to isolate current-bearing components from the motivating fluid, thereby preventing carbon bridging and reducing the explosion hazard when the motivating fluid is a hydrocarbon. The turbine generator includes a rotor that utilizes the full length as an impingement surface for imparting momentum to the rotor, thereby maintaining a compact design that reduces the overall footprint of the turbine generator. Fluid exits the generator via horizontal passages that penetrate the lower extremities of the turbine generator, preventing the buildup of condensation in the unit.
Owner:REVOLUTION TURBINE TECH LLC
Air purifier
InactiveUS20140216259A1High densityIncrease rotation speedMechanical apparatusSpace heating and ventilation safety systemsAir purifiersEngineering
Provided is an air purifier capable of increased air purification properties due to charged particles being blown out. A first air-blower blasts air, thus drawing air in from the outside to a first air-flow path, and an air-purification unit purifies the air and blows out same. A second air blower blasts air, thus drawing air in from the outside to a second air-flow path, and the air is blown out together with charged particles generated by a charged particle generator. A control unit controls the amount of air blasted by the second air-blower, according to the amount of air blasted by the first air-blower. Alternatively, the control unit controls the angle to be adjusted by the regulator, according to the amount of air blasted by the first air-blower.
Owner:SHARP KK
Intravascular blood pump
A foldable, intravascularly insertable blood pump (10) comprises a foldable, radially delivering impeller (20) accommodated in a foldable housing or envelope (24). Axially before and behind the impeller a clearance (60) is provided between the impeller (20) and the front and back walls (32, 62) of the housing (24), the clearance being at least 0.2 mm. Preferably, the space defined between adjacent blades (54) of the impeller (20) is open towards the front wall (32) of the housing (24).
Owner:ABIOMED EURO
Data storage device having selectable performance modes for use in dual powered portable devices
InactiveUS6622252B1Reduce rateShorten speedEnergy efficient ICTFilamentary/web record carriersAudio power amplifierElectrical battery
A portable computer includes a battery and a connection to an external power source, a two-speed data storage device being supplied power from one or more of the battery and the external power source, and a controller attached to the storage device. With the invention, when the storage device is powered by the internal battery, the controller not only reduces the rotation speed and the clock rate of the storage device, but also reduces the power consumption of the read / write electronics module inside the disk drive by lowering the power supply voltage for the write driver inside said module and lowering the tail currents for the amplifier stages in the readback amplifier inside said module. When the storage device is powered by an external power source, the controller will run the storage device at full speed and highest clock rate, and will provide the write driver inside the read / write electronics module with a power supply voltage high enough to accommodate the resulting higher data rate, and will provide tail currents in the amplifier stages of the readback amplifier high enough to accommodate the higher required bandwidth for the readback amplifier.
Owner:IBM CORP
Method of controlling engine system and engine system
InactiveUS20100217504A1Improve drivabilitySmooth torque curveAnalogue computers for vehiclesValve arrangementsExhaust valveInlet valve
A valve overlap period is increased as a desired torque of an engine increases by advancing an opening timing of an intake valve at a rate greater than that of retarding a closing timing of an exhaust valve in a low engine-torque area in which the desired torque of the internal combustion engine is relatively low (step S16). The valve overlap period is increased as the desired torque of the engine increases by retarding the closing timing of the exhaust valve at a rate greater than that of advancing the opening timing of the intake valve in a high engine-torque area in which the desired torque of the internal combustion engine is relatively high (step S17). Accordingly, the drivability can be improved by obtaining the proper torque and the smooth torque curve in the wide driving area.
Owner:MAZDA MOTOR CORP
Geared compressor for gas turbine engine
ActiveUS20140150401A1Reduce decreaseReduce operating speed rangeEngine fuctionsGas turbine plantsEngineeringHigh pressure
A booster assembly for a gas turbine engine having a first rotor assembly comprising a low pressure turbine drivingly connected to a fan via a first shaft and a second rotor assembly comprising a second turbine drivingly connected to a high pressure compressor via a second shaft. The booster assembly comprises a further compressor arranged to be disposed about said common axis between the fan and high-pressure compressor in a direction of flow and a gearing having first and second input rotors and an output rotor. The first input rotor is arranged to be driven by the first rotor assembly and the second input rotor is arranged to be driven by the second rotor assembly such that the output rotor drives the further compressor in dependence upon the difference in rotational speed between the first and second rotor assemblies.
Owner:ROLLS ROYCE DEUT LTD & CO KG
Method of producing glass substrate for information recording medium
InactiveUS6332338B1Avoid deformationIncrease speedGlass drawing apparatusGlass forming apparatusProduction ratePoise
Disclosed is a process for producing a glass substrate for an information recording medium by press-shaping a molten glass which gives a glass containing 0.1 to 30 mol % of TiO2, 1 to 45 mol % of CaO, 5 to 40 mol % of total of MgO and the above CaO, 3 to 30 mol % of total of Na2O and Li2O, 0 to 15 mol % of Al2O3 and 35 to 65 mol % of SiO2 and having properties of a liquidus temperature of 1,360° C. or lower and a viscosity of at least 10 poise in a shaping-allowable temperature range, or by preparing a preform formed of a glass which contains 0.1 to 30 mol % of TiO2, 1 to 45 mol % of CaO, 5 to 40 mol % of total of MgO and the above CaO, 3 to 30 mol % of total of Na2O and Li2O, 0 to 15 mol % of Al2O3 and 35 to 65 mol % of SiO2 and has properties of a liquidus temperature of 1,360° C. or lower and shaping the preform in the form of a disc by a re-heat pressing method. According to the above process, there can be mass-produced, with high productivity, high-quality glass substrates to be used for information recording media such as a magnetic disc, an optical disc, a magneto-optic disc, and the like.
Owner:HOYA CORP
Vibration suppressing method and vibration suppressing device for machine tool
ActiveUS20100104388A1Increase rotation speedEasy to provideAutomatic control devicesMeasurement/indication equipmentsChatter vibrationPhase difference
A vibration suppressing method and a vibration suppressing device are disclosed. After a tool is attached to a main spindle, a modal parameter of the tool or a workpiece is computed. Thereafter, a relation between chatter frequency and phase difference is calculated as an approximation formula based on the obtained modal parameter and machining conditions. If chatter vibration occurs after initiation of the machining, a chatter frequency corresponding to a target phase difference is obtained using the approximation formula, and based on the obtained chatter frequency, the number of tool flutes and the main spindle rotation speed, the optimum rotation speed is calculated. The rotation speed of the main spindle is then changed in accordance with the obtained optimum rotation speed.
Owner:OKUMA CORP +1
Method for controlling a spin cycle in a washing machine
InactiveUS7530133B2Reduce speedIncrease rotation speedOther washing machinesControl devices for washing apparatusRotation velocityControl theory
A method for spinning clothes in an automatic washing machine comprises determining the size of the fabric load in the washing machine and determining a plaster speed based on the size of the fabric load. A motor gradually increases the rotational speed of the drum to the plaster speed while a balance condition monitor monitors the balanced condition of the fabric load. When the rotational speed of the drum reaches the plaster speed and the load is balanced, the motor rapidly increases the rotational speed of the drum from the plaster speed to an extraction speed. If the load becomes imbalanced at the extraction speed, the rotational speed of the drum is rapidly decreased to a redistribution speed less than the plaster speed to redistribute the load.
Owner:WHIRLPOOL CORP
Gear-driven generator with offset axis of rotation and integrated cooling system
InactiveUS20150214816A1Minimize required volume and weightIncrease rotation speedMagnetic circuit stationary partsMechanical energy handlingGear driveDrive shaft
An electrical generator and drive shaft assembly are disclosed. The electrical generator may include a step-up gearbox to minimize the required volume and weight of the generator for onboard aircraft electricity generation. The electrical generator and drive shaft interface may be axially offset. The electrical generator may also include a self-contained fluid cooling and lubrication system that may employ on-board fuel to absorb generated heat and / or oil to lubricate and cool generator components.
Owner:OECO
A method of starting a turbomachine while reducing thermal unbalance
ActiveUS20140123673A1Increase rotation speedNo longer generates unacceptable vibrationTurbine/propulsion fuel supply systemsEngine fuctionsEngineeringGas turbines
A method of starting a turbomachine, performed by an electronic unit, the turbomachine including a gas turbine engine including at least one rotor and a starter to drive the rotor in rotation, the method including: receiving an order to start the turbomachine, and executing in response to receiving the order to start: a primary acceleration during which the starter is operated to increase speed of rotation of the rotor; a thermal homogenization during which the starter is operated to keep the speed of rotation of the rotor constant or to decrease it until a predetermined condition is satisfied; after the predetermined condition is true, a secondary acceleration in which the starter is operated to increase the speed of rotation of the rotor; and an ignition in which ignition of the engine is ordered.
Owner:SAFRAN HELICOPTER ENGINES
Washing machine
InactiveUS20110062837A1Easy to openLess forceKitchenware cleanersWash-standsLaundryMechanical engineering
A washing machine comprising a cabinet open at an upper portion, a top cover coupled to the upper portion of the cabinet and including an opening for loading and unloading laundry therethrough, a lid assembly rotatably coupled to the top cover to open and close the opening, and a first hinge unit connecting the lid assembly with the top cover and reducing a speed of closing the lid assembly is provided. In the washing machine, the closing speed of the lid assembly is reduced to mitigate shock between the lid assembly and the top cover.
Owner:LG ELECTRONICS INC
Hybrid vehicle and control method thereof
ActiveUS20100121512A1Decelerate fastIncrease rotation speedHybrid vehiclesInternal combustion piston enginesExternal combustion engineDrive shaft
The invention provides a hybrid vehicle and a control method thereof with which, in a case where a vehicle speed V obtained by a vehicle speed sensor equals or exceeds a first determination vehicle speed V1 at a time of occurrence of an internal combustion engine-related abnormality, which is when an abnormality relating to motors MG1 and MG2 is determined not to have occurred but an abnormality relating to an engine is determined to have occurred while the engine is operative, the motors MG1 and MG2 are controlled such that traveling torque is output to a ring gear shaft serving as a drive shaft from the motor MG2 while the engine is motored by the motor MG1 such that a crankshaft rotates at a target rotation speed until the vehicle speed V subsequently falls to or below a second determination vehicle speed V2.
Owner:TOYOTA JIDOSHA KK +1
Drum washing machine
ActiveUS7478547B2Increase rotation speedPrecise positioningOther washing machinesControl devices for washing apparatusMotor speedBrushless motors
A drum washing machine including a cylindrical drum, a DC brushless motor directly connected to the drum, a current detector detecting current flowing through the motor, a torque control vector-controlling the motor on the basis of the current detected by the current detector so that motor torque becomes optimum at least in a wash or dehydration operation, and a laundry weight estimator accelerating the motor with a maximum output torque developed when determining that motor speed is between a first speed at which laundry is assumed to start falling from an uppermost part of inner periphery of the drum when motor speed is reduced from a high speed side and a second speed at which laundry is assumed to start sticking to an uppermost part of the inner periphery of the drum, estimating laundry weight according to a q-axis current value in the vector control during an accelerating period.
Owner:TOSHIBA LIFESTYLE PROD & SERVICES CORP
Starting control method of and control apparatus for synchronous motor, and air conditioner, refrigerator, washing machine and vacuum cleaner each provided with the control apparatus
InactiveUS20020117989A1Quick conversionMinimize changesSynchronous motors startersVector control systemsPower modeFrequency changer
After the rotor position has been fixed prior to the start of a motor, the driving mode can be rapidly switched to sensorless driving and the motor can be started and controlled, by conducting current conversions in such a power supply pattern that increases the starting output torque of the motor, and controlling the inverter output voltage.
Owner:HITACHI LTD
Automotive supercharging apparatus
ActiveUS20090019852A1Increase battery capacityLow costCombustion enginesMagnetic circuit stationary partsCrankshaftPulley
An electric motor-generator and an engine are linked using a first belt that is looped around a crank pulley that is mounted to a crank shaft and a one-way clutch pulley that is mounted to a rotating shaft. An electronic control unit drives the electric motor-generator as an electric motor and drives the compressor by the electric motor-generator if engine speed is less than or equal to a predetermined value.
Owner:MITSUBISHI ELECTRIC CORP
Substrate processing apparatus and substrate processing method
InactiveUS20050026455A1Suppress formationIncreased substrate speedSemiconductor/solid-state device manufacturingEngineeringWet cleaning
The present invention provides a substrate processing apparatus having a drying mechanism for removing water from the surface of a substrate which has been cleaned by a wet cleaning process, and a substrate processing apparatus and a substrate processing method which are capable of efficiently removing an unnecessary thin film deposited on or adhering to a bevel or edge portion of a substrate. The substrate processing apparatus of this invention has a substrate holder for holding a substrate, and a dry gas supply section for turning an atmosphere to which at least a portion of a surface of the substrate held by the substrate holder is exposed into a humidity-controlled dry gas atmosphere.
Owner:EBARA CORP
Heat Dissipation System for Computers
ActiveUS20100030395A1Maximizing levelEasy to handleThermometer detailsEnergy efficient ICTEngineeringThreshold temperature
A heat dissipation system within a housing of a computer is disclosed. The heat dissipation system includes a heat dissipating fan, a temperature sensor, a rotation speed setting portion, and a performance control portion. The rotation speed setting portion is configured to change a rotation speed of the heat dissipating fan in a stepwise manner based on a threshold temperature and a measurement temperature measured by the temperature sensor. The performance control portion is configured to temporarily reduce the processing capability of a processor within the computer in response to a determination that the measurement temperature has exceeded the threshold temperature during a predetermined period of time.
Owner:LENOVO PC INT
Blood pump system
ActiveUS7160242B2Improve backflow generation conditionIncrease rotation speedControl devicesBlood pumpsPower flowBlood pump
A blood pump system includes a housing having an inlet port and an outlet port, a rotor rotated in the housing for pumping blood, and a motor for rotating the rotor. The blood pump system includes a motor current measuring function, and a backflow detecting function for detecting a backflow of blood by use of the motor current value continuously measured by the motor current measuring function.
Owner:TC1 LLC
Starting control method of and control apparatus for synchronous motor, and air conditioner, refrigerator, washing machine and vacuum cleaner each provided with the control apparatus
InactiveUS6642681B2Quick conversionAccurate startSynchronous motors startersVector control systemsPower modeFrequency changer
Owner:HITACHI LTD
Method and apparatus for controlling a dc-transmission link
InactiveUS20120300510A1Easy constructionIncrease rotation speedElectric power transfer ac networkEnergy industryEngineeringDc ac converter
A method for controlling a DC-transmission link for transmitting electric power from a power production unit connected to an AC-DC converter at a first side of the DC-transmission link to a utility grid connected to a DC-AC converter at a second side of the DC-transmission link is provided. The method includes: obtaining a DC voltage signal indicative of a DC voltage at the DC transmission link; controlling the AC-DC converter such that an AC voltage at an AC side of the AC-DC converter is adjusted based on the DC voltage signal. Further, an apparatus for controlling a DC-transmission link is provided.
Owner:SIEMENS AG
Speed Change Transmission Apparatus
ActiveUS20090270212A1Increase rotation speedEasy to distinguishToothed gearingsTransmission elementsClutchEngineering
Owner:KUBOTA LTD
Friction stir welding machine and friction stir welding tool
ActiveUS20080023524A1Prolong lifeInhibit wearWelding/cutting auxillary devicesAuxillary welding devicesEngineeringNitride
The present invention is a friction stir welding machine adapted to perform solid phase welding on a welding portion of materials to be welded, by pressing a welding tool against the welding portion of the materials to be welded while rotating the welding tool, and forcing the welding tool to be advanced into a softened portion which is softened by a frictional heat while stirring the softened portion, wherein a coating made of aluminum nitride is formed on at least a region of the welding tool to be in contact with the materials to be welded.
Owner:KAWASAKI HEAVY IND LTD
Auxiliary Unit Drive for a motor vehicle
InactiveUS20090176611A1Reduce exhaust emissionsEasy to startAuxillary drivesPropulsion using engine-driven generatorsMobile vehicleLow speed
In an auxiliary unit drive for a motor vehicle, having planetary gearing (P), with a sun gear (S) of the planetary gearing (P) connected in a power-transmitting fashion to a first electric machine (EM1), a planet gear carrier (PT) connected in a power-transmitting fashion to an internal combustion engine (VM), and a first ring gear (H1) connected to at least one auxiliary unit (AG), the auxiliary unit drive has two planet gear sets (PR1, PR2) which are rotatably supported by the planet gear carrier (PT), a second ring gear (H2) which can be held still by a first brake (BS), with the first planet gear set (PR1) meshing with the first ring gear (H1) and the sun gear (S), and the second planet gear set (PR2) meshing with the second ring gear (H2) and the first planet gear set (PR1), a first clutch (KVE), by means of which the internal combustion engine (VM) can be coupled to the first electric machine (EM1), and a first overrunning clutch (FVG), by means of which the planet gear carrier (PT) can rotate in only one rotational direction, whereby a high level of efficiency during starting or at low speeds of the internal combustion engine and also during operation of the vehicle by means of the first electric machine (EM1) is achieved.
Owner:DAIMLER AG
Method and apparatus for tidal power generation
InactiveUS20090212562A1Increasing generator rotational speedIncrease rotation speedMachines/enginesEngine componentsGear driveReduction drive
A tidal power generation system incorporates a buoy tethered to a first cable with a power generation spool engaging the first cable for rotational motion upon extraction of the cable by the buoy during elevation increases of the water on which the buoy is riding. An electrical generator is connected to the power generation spool and a rewinder for the power generation spool reels in the cable during receding water elevation. A gear drive interconnects the power generation spool and electrical generator with a gear reduction in certain embodiments for increasing generator rotational speed. The rewinder uses a rewind spool connected to the power generation spool and engaging a second cable for counter-rotational motion. A mechanical energy storage device is connected to the second cable. A suspended weight provides energy storage in the first embodiment while a spring attached to a fixed anchor point provides energy storage in an alternative embodiment.
Owner:THE BOEING CO
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