88results about How to "High speed control" patented technology

A mobile station includes a radio link control unit for outputting or inputting data that are transmitted or received via a radio channel to or from a higher-level protocol layer, a media access control unit for outputting or inputting the data via a logical channel to or from the radio link control unit, a physical layer control unit for outputting or inputting the data via a transport channel to or from the media access control unit, and for controlling radio communications, and a radio resource control unit for outputting or inputting control data to or from the radio link control unit, media access control unit, and physical layer control unit. The mobile station multiplexes report information therefrom into a channel for packet data transmission so as to transmit it to a base station. The base station carries out assignment of radio resources using the report information.

An LED driving circuit is provided for making it possible to economically drive a serially connected LED circuit by means of a switching device with a relatively low withstanding voltage even if the number of serially connected LED devices increases. In an LED driving circuit provided with a serially connected LED circuit (11) in which many LED devices are serially connected and a switching device (13) serially connected with the serially connected LED circuit (11) to control that an electrical current flowing through the serially connected LED circuit (11) is turned on or off, wherein a circuit device (15), which comprises a resistor, a constant voltage diode, a constant current diode, or the like, is connected in parallel with the switching device to make a minute current flow through the serially connected LED circuit (11) to the extent that the LED devices are not turned on when the switching device is turned off.

A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston / lever for a fixed level of valve actuation are also disclosed.

A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston / lever for a fixed level of valve actuation are also disclosed.

A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston / lever for a fixed level of valve actuation are also disclosed.

A superposition principle of waveform based on conceptions of waveform continuity and flexible regulation of voltage proposes three concepts, respectively being flexible AC transformation, flexible power transmission and transformation and flexible voltage regulation; proposes three new technologies, respectively being a transient impedance technology, a flexible stepless voltage regulation technology and a flexible stepped voltage regulation technology; proposes three new products, being an AC voltage regulating electronic switch, a transient impedance transformer and a high-speed voltage regulating transformer; proposes six high-voltage power grid connection methods, being a power grid connection method type of a transient impedance transformer, a power grid connection method of a transient impedance step up auto transformer and the like; and proposes a new reactive compensation connection method for a reactive compensation device.

A bearing surface (50) opposing a movable guide (21) of a hydrostatic bearing has a gas supply hole (52) which has an orifice with a diameter smaller than that of the outer shape of the bearing. Each of hydrostatic bearings (14, 24) incorporates a poppet valve (53) which can seamlessly change the flow resistance in the gas supply hole (52), an actuator unit (55) for linearly driving the poppet valve (53), and a guide mechanism (58) which guides the poppet valve (53) so as to set the poppet valve (53) in linear motion. The actuator unit (55) has, for example, coils (56) arranged on the movable side (the base of the poppet valve (53)) and permanent magnets arranged on the fixed side (a portion opposing the base of the poppet valve (53)). With this arrangement, the poppet valve (53) can be driven at high speed and high precision. The poppet valve (53) is driven in accordance with a command from a controller (51). A pressure (Ps) is applied to the poppet valve (53) as the back pressure. The pressure (Ps) is restricted by the poppet valve (53) and a bearing clearance and becomes a bearing mean pressure (p).

A motor device comprising a motor, and a drive control circuit for driving and controlling the motor, in which the drive control circuit includes a control unit for generating a control signal for controlling the rotation of the motor, a drive unit for driving the motor on the basis of the control signal, and a communication unit for making serial communications via a serial communication bus for transmitting serial data. This communication unit has an address generating function for generating and setting addresses.

Each base station measures the reception states of an uplink high-speed signal from mobile terminals and periodically reports the measurement results to a radio network controller (RNC). The RNC determines cells that are to be deleted from an active set based on the reception states (for example, the reception SIR) that are reported from each base station. The RNC transmits to one base station and mobile terminal a radio line release request for releasing the radio line of the uplink high-speed signal that has been set to a cell that has been determined as a cell to be deleted from the active set. The base station and mobile terminal that have received the radio line release request from the RNC each release the radio line, whereby the cells of other base stations are eliminated from the active set.

An improved beaconless adaptive optics system and process. A target is illuminated with a high energy laser beam of a directed energy laser. Wave front measurements are made of high energy laser beam reflections from the target. These wave front measurements are analyzed by a high speed processor to determine both high frequency phase components and low frequency phase components in the wave front data. (Applicants' experiments have shown that there is a direct correlation between beam spot size on the target and the phase variance of the reflected laser beam. The correlation is: the greater the phase variance the smaller the beam spot size.) Applicants have developed a technique for providing special control algorithms that provide very high speed control of the elements of a deformable mirror using this phase variance as a feedback parameter. Applicants have also developed algorithms to correct a limited number of Zernike modes associated with the wave front control.

A rotation angle detecting device includes a magnetic field forming member, magneto-sensing IC circuit including first and second sensing sections in a magnetic field to have a first preset angle between them, and a selecting circuit. One of the first and second sensing section includes plural magneto-sensing elements whose sensing surfaces face in directions different from one another by a second preset angle. When the magnetic field forming member rotates relative to the magneto-sensing means, the magneto-sensing elements respectively provide the output signals. The selecting circuit selects a pair of the output signals of the magneto-sensing elements that is closest to a preset phase difference angle.

A lead-angle control device according to the present invention includes: a space voltage vector controller calculating effective vector application times necessary for obtaining output voltage vectors of an inverter from stationary-coordinate-system instruction voltage components; a lead-angle compensator comparing the sum of the effective vector application times with a sampling period, and generating lead-angle compensation values; a speed controller generating an instruction current for compensating an error caused by a difference between an instruction speed and a current speed; an instruction current generator which generates a rotating-coordinate-system instruction current component by extracting a lead-angle component at a point where maximum torque-per-ampere can be obtained from the magnitude of the instruction current and performing a mathematical calculation on the magnitude of the instruction current and a lead-angle component; and an instruction voltage generator generating a stationary-coordinate-system instruction voltage component from the rotating-coordinate-system instruction current component.

An illuminating device according to the present invention comprises a first reflector for irradiating forward light beams from a light source, a second reflector that has an aperture and is disposed in front of the first reflector so as to reflect toward the light source the light beams from the first reflector to condense the light beams, a third reflector disposed so as to make the light beams condensed by the second reflector exit through the aperture, and a reflector moving means that moves the second reflector or the third reflector along an optical axis.

A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston / lever for a fixed level of valve actuation are also disclosed.

A test head is described for simultaneous test and / or simultaneous burn-in of all of the chips on a semiconductor wafer, including high powered microprocessor chips. A test execution wafer is attached to a test pedestal with connections for power plus an interface to a test support computer. Mounted on the test execution wafer are all of the IC chips required to implement test circuits, power distribution, local memory, temperature sensing, and communication interfaces. Advanced flip chip connectors are preferably employed for assembling the test execution wafer; they enable rework of any chips that prove defective. Embedded in the test execution wafer are general purpose interconnection circuits plus through-wafer connectors. A test socket employing wells filled with liquid metal is provided on the back side of the test execution wafer. The wafer under test is bumped at the I / O pads, and the bumps are inserted into the wells filled with liquid metal. By circulating water or other cooling fluid against the back side of the wafer under test, a cooling rate of 20,000 watts or more can be applied.

An LED driving circuit is provided for making it possible to economically drive a serially connected LED circuit by means of a switching device with a relatively low withstanding voltage even if the number of serially connected LED devices increases. In an LED driving circuit provided with a serially connected LED circuit (11) in which many LED devices are serially connected and a switching device (13) serially connected with the serially connected LED circuit (11) to control that an electrical current flowing through the serially connected LED circuit (11) is turned on or off, wherein a circuit device (15), which comprises a resistor, a constant voltage diode, a constant current diode, or the like, is connected in parallel with the switching device to make a minute current flow through the serially connected LED circuit (11) to the extent that the LED devices are not turned on when the switching device is turned off.

[Object] To provide a scribing apparatus with which fine adjustment with a low load is possible, thin films on the solar cell substrate can be shaved off with precision, thin films can be prevented from peeling irregularly, and straight and precise scribe lines can be created.[Means for Achieving Object] A scribing apparatus for thin film solar cells with which the blade of a trench creating tool 4 that is attached to the scribe head 1 is pressed against the surface of a solar cell substrate along a line along which the integrated thin film solar cell substrate W is to be scribed when the trench creating tool 4 is moved over the solar cell substrate W, so that a trench is created in the thin film formed on the surface of the solar cell substrate W, comprising: a tool holder 5 that is attached to the scribe head 1 in such a manner as to be movable upward and downward and holds the trench creating tool 4; an air cylinder 6 for pressuring the tool holder 5 against the surface of the solar cell substrate W; and a spring 7 for pressuring the tool holder 5 upward.

The invention discloses an image stabilization method and system based on a line scanning imaging system. The system comprises a main line scanning imaging system (LSO) with internal optical closed loop tracking and an integrated LSO controlled auxiliary imaging system. The main LSO imaging system is used for self imaging, providing fundus positioning and navigation for the auxiliary imaging system, obtaining fundus or eye movement information from an LSO image and performing closed-loop optical tracking. The auxiliary imaging system makes light from a point source reach an orthogonal scanningmirror through a collimation system and focus on a dichroic mirror (DM). The corresponding spatial position of the orthogonal scanning mirror is adjusted in real time by applying the fundus or eyeball motion information to the orthogonal scanning mirror to obtain a tomographic image of the desired fundus position or achieve point and array target hitting of the fundus. By means of the method, a closed-loop fundus optical tracking system can be established in the LSO, and the closed-loop tracking system is utilized to control the line scanning imaging system to achieve the aim of high speed, stability and accurate control.

A low-cost configuration of, and at the same time to control the variable dispersion compensator at a high speed in a variable dispersion compensator for compensating the wavelength dependent accumulated dispersion resulting from the wavelength dependency of the transmission fiber and fixed dispersion compensator in a long-distance high-speed WDM transmission system. In order to achieve the object mentioned above, the wavelength dependent representative characteristic of the transmission fibers 4-1 . . . n, and the wavelength dependent representative characteristic of the DCFs 13-1 . . . n are recorded and maintained in advance in the dispersion control circuit 5-1 . . . n of the variable dispersion compensator 16, and based on the input of dispersion amount at the representative length of the transmission fiber and the fiber length, the dispersion amount at the representative wavelength of the DCF, the accumulated dispersion amount is computed from the wavelength dependent representative characteristic recorded and maintained in advance, and the dispersion amount of the variable dispersion compensator 16 is determined by taking this as the reference.

An internal pressure of a fluid pressure drive actuator is measured by pressure measuring means (9), the amount of displacement of a movable mechanism is measured, a target value and a measurement value of displacement are inputted and a positional error is compensated by positional error compensating means (12), a target value of a pressure difference of the actuator antagonistically driven is calculated from the target value by target pressure difference calculating means (14), each output from the positional error compensating means, target pressure difference calculating means, and pressure measuring means is inputted and a pressure difference error is compensated by pressure difference compensating means (15).

A control unit and a control method are disclosed. First and second changing units change impedances of two or more first and second components within predetermined first and second ranges, respectively, the first and the second components affecting an output signal. An evaluation function value calculating unit calculates an evaluation function value that is dependent on the impedances of the first and the second components. A gradient vector calculating unit calculates a gradient vector based on the difference between the evaluation function values before and after the impedance change of the second components. Based on the gradient vector, impedance of each of the first components is changed such that the evaluation function value takes a desired value.

The invention relates to a motor driving system for a vehicle bidirectional quasi-Z-source inverter. The motor driving system comprises a speed regulation control module, a sensor unit, and a power supply module, a bidirectional quasi-Z-source preceding-stage passive network, a three-phase bridge type inverter and a motor which are connected in sequence, wherein the bidirectional quasi-Z-source preceding-stage passive network and the three-phase bridge type inverter form the bidirectional quasi-Z-source inverter; the speed regulation control module is connected with the sensor unit and the bidirectional quasi-Z-source inverter separately; and the bidirectional quasi-Z-source preceding-stage passive network comprises inductors L1 and L2, capacitors C1 and C2, an IGBT switch tube S7 and a diode D7. Compared with the prior art, the bidirectional quasi-Z-source inverter system established by the invention, taken as the single-stage inverter system, can replace the two-stage conversion DC / DC and DC / AC conversion in the conventional electric driving field to avoid voltage fluctuation of the battery pack and maintain the stable and adjustable direct bus voltage; and in addition, the problem of dead time existing in the conventional inverter is prevented, so that the output voltage distortion can be lowered, and the torque pulsation and electromagnetic noises can be reduced.

A receiving apparatus may achieve optimal RF and IF gain control while suppressing saturated amplification due to interference. The receiving apparatus includes an RF variable gain Amp that amplifies a received RF signal, a mixer that converts an output signal of the RF variable gain Amp into an IF signal, an IF variable gain Amp that amplifies the IF signal, a demodulator that demodulates an output signal of the IF variable gain Amp, and an AGC circuit. The AGC circuit sets a period of gain control for the RF variable gain Amp to be shorter than a period of gain control for the IF variable gain Amp when gains of the RF variable gain Amp and the IF variable gain Amp are controlled based on the output signal of the IF variable gain Amp.

A low-cost configuration of, and at the same time to control the variable dispersion compensator at a high speed in a variable dispersion compensator for compensating the wavelength dependent accumulated dispersion resulting from the wavelength dependency of the transmission fiber and fixed dispersion compensator in a long-distance high-speed WDM transmission system. In order to achieve the object mentioned above, the wavelength dependent representative characteristic of the transmission fibers 4-1 . . . n, and the wavelength dependent representative characteristic of the DCFs 13-1 . . . n are recorded and maintained in advance in the dispersion control circuit 5-1 . . . n of the variable dispersion compensator 16, and based on the input of dispersion amount at the representative length of the transmission fiber and the fiber length, the dispersion amount at the representative wavelength of the DCF, the accumulated dispersion amount is computed from the wavelength dependent representative characteristic recorded and maintained in advance, and the dispersion amount of the variable dispersion compensator 16 is determined by taking this as the reference.

The invention discloses an FPGA (Field Programmable Gate Array) based laser diameter measuring method used for detecting the diameter of a cable in real time. The method comprises the following steps of: (1) generating a parallel light, traversing the cable to be measured in the parallel light; (2) partially ejecting the generated parallel light after the parallel light is shielded by the cable to be measured; (3) converging the partially ejected parallel light and converting the light into an analog electric signal by virtue of a photoelectric sensor; (4) receiving and amplifying the analog electric signal; (5) receiving the amplified analog electric signal and carrying out wave treatment; (6) receiving the analog signal subjected to the wave treatment and converting the analog signal into a digital signal; (7) receiving the digital signal and carrying out operation processing; and (8) receiving the digital signal subjected to the operation processing and displaying the digital signal. The FPGA based laser diameter measuring method provided by the invention is applicable to real-time online detection under the working conditions that the speed of a production line is higher and the cable shakes, and the requirement of measuring the diameter of the cable at high speed and high accuracy in a high frequency environment is met.

In a power supply device, bidirectional converters that are each capable of supplying or regenerating an electric charge are provided between an input section for an input voltage and an output section for an output voltage. An amplitude change monitor circuit detects an envelope of an RF input signal. A converter switching circuit controls supply and regeneration of electric charges by the bidirectional converters so that the output voltage follows an amplitude change of the input signal. An output capacitor capacitance estimation unit estimates the capacitance of an output capacitor from its voltage and current. A delay time detection circuit grasps a delay time of a power supply device for a high frequency power amplification circuit and makes an adjustment through a delay adjustment circuit.

Each block is multiplexed. Each block is provided with an interface portion (10). A section terminating portion (11) receives overhead information from an associated equipment, and an APS byte processing portion (12) converts APS bytes contained in overhead information to event information. A state processing portion (16) inputs event information and state of a self block at an address on a state transition table (5) and read out a new next state information of said self block. The transition of a state of said self block is effected to a new state and its result information is transmitted to said associated equipment and the like. Sending and receiving of state information and state transition are hard-ware controlled, causing no load to firmware and allowing a high speed switching accordingly.

An automatic transaction apparatus communicates with a Web server and performs automatic transaction according to an operation of a user, which makes it easier to create screen content for controlling automatic transaction apparatus which have different functions and units. Objects for each processing of the transaction processing are embedded in a screen content of a Web server, one method in the processing units is called up, and operation of a plurality of I / O units is controlled. This makes it easier to create a screen content which can be commonly used for different automatic transaction apparatus in a general transaction flow, also, parallel control becomes possible and high-speed I / O unit control can be implemented.

A VTOL fixed wing aircraft capable of high-speed forward flight. The aircraft has a main wing internally reinforced with front and aft spars. Spar boxed are located in roll-balanced locations along the wing. Each spar box serves as a connection point for a support linkage that supports a leading-edge and trailing-edge propulsion unit. The leading-edge propulsion unit is fitted with a puller propeller and designed for articulated movement between a VTOL position in front of the wing leading edge and a forward flight position below the wing leading edge. The trailing-edge propulsion unit is fitted with a pusher propeller and designed for articulated movement between a VTOL position in behind the wing trailing edge and a forward flight position above the wing leading edge. The propeller includes a propulsor thrust ring having an aerodynamic profile and a thrust nozzle to capture and vector radial air leakage into thrust.