149results about How to "Extend the scope of control" patented technology

A windpark includes at least two wind energy installations, each of which installations comprises a rotor, a generator driven by the rotor and a control device, and which are connected via connecting lines to a main line. The windpark also includes a linking point which connects the main line to a power transmission network, a parkmaster which is configured for power factor control and has communication lines for transmission of control signals to the wind energy installations, and a power-factor control section including a distributed regulator having a higher-level regulator located at the parkmaster which is configured to determine a nominal voltage in order to set a global power coefficient for the power which is emitted to the power transmission network and to emit the global power coefficient as a signal via the communication lines and lower-level regulators at the wind energy installations.

A driver and method for driving a semiconductor light emitting device array is provided. The driver includes at least one current regulator unit having a plurality of controllable switches to regulate the current of each set of cascaded light emitting devices in the semiconductor light emitting device array. The currents of the sets are used to generate a plurality of feedback signals through a feedback unit. A compensation unit generates a plurality of control signals in response to the feedback signals and a plurality of timing signals, so as to control the controllable switches. A driver according to the present invention can independently and individually control the luminance and timing of each set of cascaded light emitting devices.

A central control system and method for controlling air conditioners. The central control system performs central control operations for the air conditioners according to an operation schedule or control command inputted from a central controller coupled to the air conditioners through an internal network or a remote controller accessible to an external Internet network. When the air conditioners are simultaneously operated, control signals based on the control command are adjusted to prevent electric power consumption from abruptly increasing and hence the stability and reliability of control can be improved. The central controller includes a touch screen-based monitor. A control program included in the central controller provides a timetable corresponding to a specified period. An operator can conveniently input/edit the operation schedule through a dragging operation performed on the monitor, and confirm the inputted/edited operation schedule.

A power converter circuit has an inductor input and switching means to put a pair of capacitors alternately in series or in parallel. By pulse width modulating between the states, the voltage on the capacitors can be controlled over a two to one variation of the input voltage. A pair of transformer isolated power converter sub-circuits can be connected to the capacitors, and their outputs can be combined to provide a single controlled output voltage.

The invention discloses a workflow engine supporting three kinds of mode driving: fixed-flow, free-flow and mixed-flow mode driving, and the workflow engine includes service procedure definition and service procedure driving modules. Under driving of the fixed-flow mode, a service procedure definition stipulates parameters such as all activities and routing information and the like of a procedure. When a service procedure is driven, execution must be carried out according to the defined parameters. Under the driving of the free-flow mode, activities or routing information related with the procedure do not need to be defined in advance and when the service procedure is driven, each activity and routing are determined dynamically through selected roles or personnel and selected application program information. Under the driving of the mixed-flow mode, the service procedure definition only stipulates activity information parameters which may be related with the procedure and when the service procedure is driven, execution must be carried out according to the defined activity parameters and a routing clue and a triggering condition and the like are dynamically determined through the selected activities, roles or personnel.

An analog beamformer of an ultrasonic diagnosis apparatus includes: a plurality of unit analog beamformers allocated to two or more focal points, respectively, and configured to beamform signals received from the respective focal points through transducer elements and output the beamformed signals; an analog multiplexer configured to sequentially select the output signals of the unit analog beamformers and generate a final output signal; a clock generator configured to provide a clock signal required for the unit analog beamformers; and a processor configured to provide information on sampling time points of channels, and sequentially operate the unit analog beamformers to perform beamforming according to a time-interleaving scheme.

An LED package is disclosed herein. The disclosed LED package comprises a base having an LED chip mounted thereon, an encapsulation member formed by a light-transmittable resin to encapsulate the LED chip, and a housing formed to expose a top portion of the encapsulation member and to encompass a side surface of the encapsulation member, wherein the encapsulation member is formed by a transfer molding process using a mold to have a predetermined shape. Further, the housing may be light-transmittable.

In a drive method of a light-emitting display panel capable of emitting light in low luminance, the parasitic capacitances of the light-emitting elements disposed in the light-emitting display panel are precharged making use of a reverse bias voltage before they are lit. In this case, a reverse bias voltage created by a reverse bias voltage creation circuit or a peak current being precharged is controlled by selectively grounding control terminals based on dimmer control. In particular, when the light-emitting elements are emitted in low luminance, the reverse bias voltage is output in a low level, thereby the light-emitting elements are prevented from being precharged with an excessive voltage. The above arrangement can realize light emission control in low luminance.

A knock detection apparatus which is capable of changing a knock control starting time period appropriately so as to prevent erroneous knock determination, to thereby expand a knock control range. A peak value acquisition unit acquires a peak value of a vibration of an internal combustion engine during each rotation cycle of a crankshaft of the engine. A background calculator calculates a background by averaging peak values acquired by the peak value acquisition unit. A knock determination unit performs knock determination based on whether a peak value acquired by the peak value acquisition unit is higher than a predetermined level above the background, and feedback controls knock in the engine according to a result of the knock determination. A temperature acquisition unit acquires a temperature of the engine during a start of the engine. A knock determination controller inhibits operation of the knock determination unit until a predetermined time period determined according to the engine temperature acquired by the temperature acquisition unit has elapsed.

Provided is a highly reliable semiconductor device equipped with a plurality of semiconductor elements having desired properties, respectively; and a manufacturing method facilitating the manufacture of the semiconductor device. The semiconductor device is manufactured by forming a gate-electrode metal film having a thickness of from 3 to 30 nm over the entire upper surface of a gate insulating film; forming an n-side cap layer having a thickness of 10 nm or less over the entire upper surface of a portion of the gate-electrode metal film belonging to an nFET region by using a material different from that of the gate-electrode metal film; and carrying out heat treatment over the n-side cap layer to diffuse the material of the n-side cap layer into the gate-electrode metal film immediately below the n-side cap layer and react them to form an n-side gate-electrode metal film in a nFET region. A poly-Si layer is then deposited, followed by gate electrode processing.

Provided are a substrate temperature control method and a plasma processing apparatus using the method. The method includes: disposing a substrate on a placing table provided in a vacuum processing chamber; supplying a heat conduction gas between a rear surface of the substrate and the placing table; detecting a pressure of the heat conduction gas; comparing the detected pressure value with a set pressure value; controlling the supply of the heat conduction gas so that the detected pressure value becomes the set pressure value; and alternately repeating a first period where the set pressure value is set to be a first set pressure value that is higher than a low pressure value and equal to or higher than the lowest limit pressure value and a second period where the set pressure value is set to be a second set pressure value that is lower than the low pressure value.

The invention relates to a plasma processing apparatus and a plasma processing method and particularly relates to a plasma processing apparatus suitable for executing an etching processing of a work by using plasma.

An apparatus for driving a lamp of a liquid crystal display device includes a control signal generator generating a switching control signal, a waveform modulator modulating at least an amplitude of the switching control signal to generate a modulated switching control signal, and an AC waveform generator converting a supply voltage based on the modulated switching control signal to generate an AC waveform for driving the lamp, the AC waveform including at least two different peak-to-peak amplitudes within a time period.

Generation of a steering assist force is allowed to continue by securing an appropriate control power without being affected by the fluctuation of a battery voltage. An electric power steering control device comprising steering torque detection means 17 for detecting a steering torque, an electric motor 5 allowed to generate a steering assist force for a steering system, and steering assist control means 3 for controlling the electric motor based on the steering torque detected by the steering torque detection means 17 comprises a control power generating circuit 20 for stepping up a battery voltage of an in-vehicle battery 1 to generate a control power and supplying the generated control power at least to the steering assist control means 3.

A vibrating piece manufacturing method includes: (a) preparing a supporting body having first and second surfaces, the first and second surfaces defining a thickness while being directed toward opposite directions, the supporting body including a base and a plurality of arms, the arms extending side-by-side in a direction orthogonal to a direction of the thickness from the base, a lower electrode film being disposed on the first surface of each of the arms, a piezoelectric film being disposed on the lower electrode films, at least one upper electrode film being disposed on the piezoelectric film, at least a part of the second surface of each of the arms being an exposed area; and (b) etching the exposed area of the second surface so as to reduce the thickness to reduce flexural rigidity of the arms with respect to the thickness direction.

The invention discloses a toxic or combustible gas sensor wireless detection network system and a monitoring method thereof. The system comprises a wireless gas detection terminal and a monitoring terminal, and is characterized in that: the wireless gas detection terminal communicates with the monitoring terminal through a self-organized network or a data ratio, and comprises a gas sensing module and a wireless transceiver module; and the gas sensing module detects the concentration of a toxic or combustible gas in the ambient environment, and transmits the detected information to the monitoring terminal for communication through the wireless transceiver module. The system can monitor the data of the toxic, harmful and combustible gas in real time through the network simultaneously in field and remotely.

The invention discloses a power grid project site security control method and system based on the Internet of things. The characteristics lie in that real-time management and control are performed onpersonnel and vehicle access and use conditions of construction machinery and instruments on the project site through an on-site personnel and vehicle management and control subsystem, and real-time management and control are performed on conditions of plan execution, a working plane, the operation personnel, simultaneous in-and-out, on duty and safety inspection through an on-site operation management and control subsystem; and a command center performs real-time monitoring on the project site according to real-time data of the on-site personnel and vehicle management and control subsystem and the on-site operation management and control sub-system and alarms for an exception. The power grid project site security control method and system have the characteristics of abilities of facilitating management for the construction site and improving the construction safety.

A torque control circuit includes a motor driving circuit, a motor operating current detection circuit, a reference voltage generation circuit, a maximum motor current setting circuit, a torque setting circuit, an information output circuit, a regulated-voltage power supply circuit, a motor operating temperature detection circuit, and a control circuit. The control circuit includes an integrated circuit to carry out functions of reading information detection sources, processing, and instruction for execution of torque control and output terminals of the reference voltage generation circuit, the maximum motor current setting circuit, the motor operating temperature detection circuit, and the motor impedance torque setting circuit are respectively connected to corresponding input terminals of the integrated circuit to carry out desired control of torque supplied to the impact tool.

The invention provides a data communication method, a Bluetooth beacon repeater and a Bluetooth positioning system. The method is applied to the Bluetooth beacon repeater; the Bluetooth beacon repeater is located in the Bluetooth positioning system; the Bluetooth positioning system comprises at least one Bluetooth beacon repeater, a Bluetooth gateway and at least two Bluetooth beacons. The methodcomprises the following steps: enabling the Bluetooth beacon repeater to be used as Bluetooth beacon broadcast positioning information when the Bluetooth beacon repeater is in a positioning working mode; and when the Bluetooth beacon repeater is in a system debugging mode, receiving an access request sent by the Bluetooth gateway, and performing data forwarding between the Bluetooth gateway and the Bluetooth beacons. The data communication method provided by the invention can solve the problem that the control range of the Bluetooth gateway is smaller, thus the working states of the Bluetoothbeacons are difficult to be effectively controlled.

A Group VB element doped with a β-gallium oxide crystalline material, and a preparation method and application thereof. The series doped with the β—Ga₂O₃ crystalline material is monoclinic, the space group is C2/m, the resistivity is in the range of 2.0×10⁻⁴ to 1×10⁴Ω·cm, and/or the carrier concentration is in the range of 5×10¹² to 7×10²⁰/cm³. The preparation method comprises steps of: mixing M₂O₅ and Ga₂O₃ with a purity of 4N or more at molar ratio of (0.000000001-0.01):(0.999999999-0.99); an then performing crystal growth. The present invention can prepare a high-conductivity β-Ga₂O₃ crystalline material with n-type conductivity characteristics by conventional processes, providing a basis for applications thereof to electrically powered electronic devices, optoelectronic devices, photocatalysts or conductive substrates.

Reference signals are combined with a chop frequency signal in a pulse width modulator (PWM) to provide plural inputs to a multi-phase H-bridge amplifier. Also provided to the bridge amplifier is a high voltage DC input which is converted by the pulsed inputs to the bridge amplifier to a variable AC voltage for driving a motor. The AC drive voltage is also provided to a variable frequency voltage-controlled oscillators (VCOs) in a feedback arrangement, with the variable frequency VCO outputs heterodyned with each of plural outputs of a multi-phase ring oscillator to provide plural baseband signals having a constant phase relationship at a high frequency. The baseband signals form the aforementioned reference signals provided to the PWM in the feedback arrangement with closed loop control and frequency and phase discrimination using phase lock loop techniques for synchronous motor control over a range of DC-100 kHz with 0-25 MHz VCOs.