159results about How to "Efficient start" patented technology

An apparatus and method for a centrifugal fluid pump for pumping sensitive biological fluids, which includes (i) an integral impeller and rotor which is entirely supported by an integral combination of permanent magnets and electromagnetic bearings and rotated by an integral motor, (ii) a pump housing and arcuate passages for fluid flow and containment, (iii) a brushless driving motor embedded and integral with the pump housing, (iv) a power supply, and (v) specific electronic sensing of impeller position, velocity or acceleration using a self-sensing method and physiological control algorithm for motor speed and pump performance based upon input from the electromagnetic bearing currents and motor back emf-all fitly joined together to provide efficient, durable and low maintenance pump operation. A specially designed impeller and pump housing provide the mechanism for transport and delivery of fluid through the pump to a pump output port with reduced fluid turbulence.

An in-vehicle power transmission apparatus is equipped with a plurality of power split rotors and a power transmission control mechanism. The power split rotors work to split power among a rotary electric machine such as a motor-generator, an internal combustion engine, and a driven wheel of the vehicle. If rotational energy, as outputted from the power split rotors, is defined as being positive in sign, the power split rotors are so assembled that when the power transmission control mechanism establishes transmission of the rotational energy that is positive in sign as the power from a first rotor that is one of the power split rotors to the internal combustion engine, the other power split rotors are so linked as to provide output rotational energies which are opposite in sign to each other. This enables the speed of the first rotor to be placed at substantially zero.

A digitally adaptive controller circuit for commutating a brushless, sensorless, DC motor in either of two directions adapted to receive digital back electromotive force (BEMF) detector signals. The digital circuit is driven by an input clock that is adjustable to configure the motor controller for use with a broad range of DC motors. The circuit includes commutational logic that decodes a current commutational state and a user-definable binary direction input into logic levels for digital control signals for controlling motor drive switches. The circuit also includes a signature analyzer to compare logic levels in the BEMF detector signals with expected logic levels based on an expected rotor position and direction of rotation. The digital circuit commutates the motor if the logic levels in the BEMF detector signals are at the expected logic levels. The digital circuit is compact and simple enough to be deployed onto a single programmable logic device.

A method and an apparatus for starting a gas turbine engine under various conditions are used to distribute a varying total amount of electric power to at least one of a starter, a fuel heater and an oil heater while providing fuel.

The invention relates to a wind turbine comprising a rotor with a hub and turbine blades, and further comprising a boundary layer control system for the turbine blades. A plurality of pressure chambers is located in the blade distributed over the length of the blade. Each pressure chamber is in communication with the outside of the blade through one or more corresponding openings in the outer surface of the turbine blade. Furthermore a suction channel and a blow channel extend inside the blade for supplying an underpressure and an overpressure respectively to the pressure chamber, each pressure chamber being connected to at least one of said channels through an air passage in which an actively operable valve is located. The valve is connected to a control unit for selectively bringing the pressure chamber into communication with or close it off from said channel(s) so as to blow air out of the pressure chamber or suck air into the pressure chamber through the corresponding opening(s) in the blade surface.

A communication processing system which allows a secure communication with a mobile terminal via a network. The communication processing system includes a server which provides a common key used to encrypt and decrypt data transmitted between communication terminals, and provides information about locations of communication terminals on the network. The server generates a session key and provides it to communication terminals. The server has a database in which location information of mobile terminals is stored. If the server receives, from a calling terminal, data designating a destination terminal, the server searches the database using an IP address of the destination terminal as a search key to acquire the latest location information of the destination terminal, and the server transmits encrypted data including a session key and address data of the destination terminal to the calling terminal.

A communication control method of this invention includes: when a call-in request to a chat for another participant in a voice-based teleconference by a first participant of the voice-based teleconference is received, transmitting the call-in request to the chat to a terminal of another participant; and when a participation response to the chat by another participant is received, carrying out a presence management setting so as to enable the first participant and a participant replying the participation response to update and subscribe dialogue contents of the chat, which are managed as presence data delivered to subscribers when updated. Thus, by using the presence technique, it becomes possible that the conference is shifted from the voice-based teleconference to the character-based teleconference and both of the conferences coexist.

A fuel cell apparatus comprises a cell stack, a reforming portion (reforming catalyst), a vaporizing portion, a reforming target gas supply, an oxygen-containing gas supply, a water supply, and a controller. The cell stack comprises a plurality of fuel cells electrically connected in series in a housing case. The reforming portion is disposed over the cell stack and is to be exposed to a gas produced by burning a fuel gas from the fuel cells. The reforming catalyst can perform partial oxidation reforming, autothermal reforming and steam reforming as a reforming reaction. The vaporizing portion generates steam to be supplied to the reforming portion. The reforming target gas supply supplies a reforming target gas to the reforming portion. The oxygen gas supply supplies an oxygen gas to the reforming portion. The water supply supplies water to the vaporizing portion. The controller controls the reforming reaction in the reforming portion.

A hoist synchronization apparatus and method using a master controller operating software that provides a pulse reference to a slave controller. The slave commands its motor to rotate at the speed conveyed by that pulse reference. The slave controller monitors the pulse feedback from both the master encoder and the slave's encoder and compensates for any position error by adjusting its motor output speed. In addition, the slave controller includes the capability to automatically resynchronize the hoists. Resynchronization is accomplished by storing position error generated when either the master or the slave is run independently and correcting for the error when both units are operated at a later time.

A method and system that enable system firmware to efficiently boot an operating system (OS) and / or client program from a network-connected Internet Small Computer Systems Interface (iSCSI) device. The method generally comprises: (1) defining the firmware representation of the iSCSI device within the hierarchical data structure that represents the system hardware; and (2) extending the network support package to accommodate additional boot arguments that allow system firmware to acquire the information required for booting from the network-connected iSCSI device, while utilizing one of the existing discovery protocols.

A fan motor driving circuit controls an energized state of a fan motor by performing on and off control of a switching circuit connected to a coil of the fan motor of a driving object. A variable reference voltage circuit generates a voltage whose voltage level changes with time by charging or discharging a capacitor at the start of starting up the fan motor. A drive signal combining unit generates drive signals on the basis of the voltage when at least starting up, and performs on and off control of the switching circuit by the drive signals. An initialization circuit initializes the capacitor before starting up with a transition from off to on of a power supply voltage to be supplied to the fan motor driving circuit as a turning point.

A drawing edit management unit of a design management server manages an E-BOM created from a CAD design drawing by storing the E-BOM in a E-BOM database, and notifies a manufacturing management server of design completion. A design change display processing unit causes design change permitted ranges and forbidden ranges to be displayed, upon design change, in accordance with design change verification information of a design change verification database. A parts order management unit of the manufacturing management server requests confirmation when receiving the design completion notice, and manages a M-BOM, to which preparation information including order instructions and manufacturing instructions of a part is added and which has been created from the E-BOM after confirmation, by storing the M-BOM in a M-BOM database. A design change verification processing unit manages design change verification information created from the preparation information of the M-BOM by storing the design change verification information in a design verification database.

A synchronous processing system having semiconductor integrated circuits. One of the semiconductor integrated circuits as a master chip comprises a first synchronization controller and a first counter controller that allows a counter in the master chip to perform counting synchronously with a clock pulse in response to a synchronization control signal from the first synchronization controller. Another semiconductor integrated circuit as a slave chip comprises a second synchronization controller that receives the synchronization control signal from the master chip, and a second counter controller that allows a counter in the slave chip to perform counting synchronously with the clock pulse in response to the synchronization control signal received. Each of the first and second counter controllers allows the counter to stop counting if the synchronization control signal is not supplied at the time point that a count value of the counter has reached a predetermined value.

Improved methodology for starting up a LNG facility employing a refluxed heavies removal column. The improved methodology involves varying the temperature of the feed to the heavies removal column between start-up and normal operation. This allows a larger amount of the stream produced from the top of the heavies removal column during start-up to be used to more rapidly start up the LNG facility.

The invention belongs to the technical field of a self-priming pump, and particularly relates to an outer ring type efficient start system for the self-priming pump and a start method thereof. The outer ring type efficient start system comprises a main pump which is communicated with a water pool, a pump inlet adjusting valve, a pump outlet adjusting valve, a gas-liquid separation device, a first pressure detecting device, a second pressure detecting device and a third pressure detecting device. All the parts of the invention form a vacuum adjusting system together. The vacuum adjusting system is used to facilitate circular flow of liquid in a circular pipeline outside the pump and enable a water inlet pipeline of the main pump to be in a vacuum state so that gas and liquid can be absorbed into the main pump, the gas absorbed into the main pump is exhausted in the gas-liquid separation device, and eventually the main pump achieves self-priming to complete start process. The outer ring type efficient start system for the self-priming pump and the start method thereof are simple in structure, quick in start, simple in main pump flow channel and convenient to process, flowability of the flow channel is greatly improved, the main pump needs no other auxiliary systems so that loss inside the pump is avoided, and accordingly operation efficiency of the main pump is greatly improved.

Provided are a method and a device for booting a host embodying a downloadable conditional access system (DCAS), wherein one of a plurality of pre-determined booting modes is decided as a booting mode of the host based on first information indicating whether a host can communicate with a broadcasting service provider and second information indicating whether a software-based security client providing information required for decrypting broadcasting data is installed to a hardware-based security module connected to the host, and the host is booted in the decided booting mode.

The invention relates to an electromagnet control circuit for low voltage switch electric appliances, which comprises an electromagnet, an external AC power input circuit, a rectifier and filtering circuit, a self-feedback pulse-width modulation and IGBT drive circuit, a starting delay circuit, an input voltage sampling circuit, and a control chip MCU circuit. The signal transmission of the circuits is: the self-feedback pulse-width modulation and IGBT drive circuit modulates and outputs pulse width according to load of the electromagnet, so as to control attraction and release of the electromagnet; the starting delay circuit adjusts feedback resistance value at the attraction moment aiming at the condition that the electromagnet needs heavy current at the attraction moment and keeps low current after the attraction, so as to adjust pulse width of output voltage to provide starting heavy current for the electromagnet; when the starting time is up, the starting delay circuit adjusts the feedback resistance value to adjust the pulse width of the output voltage, so as to provide maintaining low current for the electromagnet; and the input voltage sampling circuit detects external AC power input, transforms a voltage signal into a frequency signal through a V / f converting agent, and transmits the signal to the control chip MCU.

The invention discloses a fuel battery low-temperature starting grading preheating control method. According to the fuel battery low-temperature starting grading preheating control method, an electric pile, a sensor for measuring the temperature of the electric pile, a fuel supply system, an oxidizing agent supply system, a cooling medium circulating medium, an electric pile power output circuit, an external heat source heating system, an internal heat source heating system and a total control system are provided, wherein the external heat source heating system utilizes a mode of directly heating the electric pile by an electric heating wire, or a mode of circularly heating the electric pile after a cooling medium is heated or a mode of heating the electric pile after the air is heated; and the internal heat source heating system utilizes heat generated by electrochemical reaction of the electric pile or heat generated by catalytic combustion in the electric pile. According to the method, the preheating mode of the electric pile is determined based on a change relation between supercooling degree and the induction time of liquid water icing influenced by a porous medium material component and a microporous structure and according to the environment temperature of fuel batter low-temperature starting, safe, rapid and efficient starting of the electric pile is guaranteed, and the durability of the electric pile is improved.

The invention discloses a device for starting a side slope siphoning drainage system and a method of the device. The device comprises a water tank, air discharge pipes and a drainage pipe, a water outlet of each siphon is formed in the sealed water tank, and an inlet of each air discharge pipe is connected to the top of the water tank; an inlet of the drainage pipe is connected to the bottom of the water tank, the vertical distance between the inlet of the drainage pipe and an outlet of the drainage pipe is larger than the height of a water column corresponding to the local atmospheric pressure, and the height difference between the top of the water tank and a hole opening of a drilling hole is larger than the height of the water column corresponding to the local atmospheric pressure. According to the device, by controlling opening and closing of the draining pipe, negative pressure is produced to start siphoning without the help of other equipment, and the device is simple and reliable; the vertical distance between the inlet of each air discharge pipe and an outlet of the corresponding air discharge pipe is larger than the height of the water column corresponding to the local atmospheric pressure, negative pressure is formed in the water tank, water in the air discharge pipes cannot enter the water tank, it is guaranteed that negative pressure in the water tank is not broken,and accordingly the stability of the whole device is improved; multiple siphons can be started simultaneously, and siphoning is started quickly and efficiently.

The invention discloses a method and a device for quickly starting a massively parallel computer system. The method comprises the steps that a configuration interface is arranged for each computer node, and the computer node reads characteristic parameters needed for starting the system and stored in the configuration interface in advance before starting; if the characteristic parameters in the configuration interface are usable, the computer node starts the system according to the read characteristic parameters; if the characteristic parameters in the configuration interface are unusable, characteristic parameters for the computer node are generated through a management controller and written into the corresponding configuration interface, then the computer node reads the characteristic parameters from the configuration interface and starts the system according to the read characteristic parameters; and the device comprises the management controller and the configuration interfaces, wherein the configuration interfaces are arranged in the computer nodes and connected with microprocessors of the computer nodes, and the management controller is connected with at least one configuration interface. The method provided by the invention has the advantages of being fast in starting speed, high in starting efficiency, good in flexibility and low in implementation cost.

A method and system for transmitting / receiving a signal in a wireless communication system are provided, in which an mobile station determines a sequence number of a first protocol data unit being a last received protocol data unit, transmits the SN of the first protocol data unit to a serving base station, and allocates a virtual SDU sequence number to a service data unit including a second protocol data unit following the first protocol data unit.

The invention relates to a method for detecting stochastic resonance of a weak back electromotive force signal of a brushless direct-current motor. The method comprises the following steps of: (1) under the static or low-speed condition of the motor, applying test pulse to a stator coil of the motor, and detecting a back electromotive force signal of the motor with a singlechip; (2) inputting theback electromotive force signal and a noise signal into a stochastic resonance system together, and outputting a zero crossing signal with the stochastic resonance system; and (3) detecting the zero crossing signal output by the stochastic resonance system with the singlechip, and outputting a motor commutation signal to the motor. In the invention, the weak back electromotive force signal which is submerged in noise is enhanced and the noise is remarkably reduced by using the stochastic resonance system, so that aim of extracting a weak back electromotive force zero crossing signal of the motor is fulfilled. The zero crossing signal is more accurate, so that the running efficiency of the motor can be increased, the reverse rotation of the position sensor-free brushless direct-current motor in the starting process is avoided, and the stability and high efficiency of the motor are ensured in the starting and running processes.

A hydrostatic power unit (2) comprises a variable displacement machine with a continuously variable displacement volume and is operated as a pump and motor and is in a drive connection with an internal combustion engine (3). When operated as a pump, the power unit sucks hydraulic fluid out of a tank (9) and delivers into a delivery side (P), and, when operated as a motor, functions as a hydraulic starter to start the internal combustion engine (3). When operated as a motor, the power unit is supplied with hydraulic fluid from a hydraulic accumulator (30). The displacement volume of the power unit (2) is set by a displacement volume control device (60) actuated by a positioning piston device (61) supplied with hydraulic fluid from a charging pressure circuit (23). The power unit (2) includes a supplemental positioning piston device (80) in an operative connection with the displacement volume control device (60) and which is actuated directly by the pressure present in the hydraulic accumulator (30). By means of a connection of the supplemental positioning piston device (80) with the hydraulic accumulator, the power unit (2) can be adjusted to increase the displacement volume to start the internal combustion engine (3).

The invention discloses uracil auxotroph Hansenula yeast gene engineering host strain Hansenula yeast YH-11 CGMCC NO.2976 with stable heredity, and simultaneously provides a construction method for the Hansenula yeast. The construction method comprises the following steps: 1) constructing recombinant plasmid p18HURA containing orotidine-5-phosphate decarboxylase gene (HURA3) of the Hansenula yeast; and 2) constructing recombinant plasmid pHURK for the HURA3 with disrupted gene; and converting the plasmid pHURK of step 2) into the Hansenula yeast by using a yeast whole cell conversion method, and obtaining the uracil auxotroph strain through screening. The invention further discloses application of the constructed uracil auxotroph Hansenula yeast gene engineering host strain Hansenula yeast in producing foreign protein.

An electrostatic loudspeaker requires a high voltage DC bias power supply to bias the stators and diaphragms of electrostatic speakers. A self biased power supply eliminates the need for an external power supply by deriving a high voltage bias from the stator AC signal voltages which have been rectified and run from a high voltage tap and / or through a voltage multiplier which has a voltage limiting means.