188results about How to "Limited power" patented technology

A system and method for remotely controlling power to an electrically powered device in a simple and efficient manner is disclosed herein. The system comprises an apparatus, an electrically-powered device and a controller. The apparatus comprises a cord, an alternating current outlet socket, an alternating current input plug, a latching relay, a processor and a transceiver. The system preferably uses a WiFi communication signal to transmit commands from the remote controller to the apparatus.

A method, apparatus and computer program product are provided that improve mobility procedures between base stations based on rules configurable by the operator that govern both the mobile terminal and the base stations. A method is provided in which a mobile terminal obtains system information from a neighboring base station. The system information is stored at the mobile terminal such that the mobile terminal may thereafter participate in a handover or reselection to a respective neighboring base station at least partially based upon the stored system information, typically without further verification of the system information. If desired, the mobile terminal can further determine if one or more predefined validity criterion is met with respect to the stored system information. If the predefined validity criterion is not met, the mobile terminal can then obtain system information, e.g., updated system information, from the neighboring base station.

A power control system is disclosed for controlling the power supplied to a lighting system and limiting power during time of peak demands and the like wherein the lighting system includes a power source and a lighting load connected to the power source. The control system comprises a main transformer having a first winding and a second winding, the first winding being connected between the power source and the lighting load. An autotransformer connected to the power source having a plurality of electrical transformer taps with prescribed voltage values. A plurality of solid-state tap switches is connected to the transformer taps and to the second winding of the main transformer to apply the prescribed voltage values across the second winding. A system controller has an input for receiving a voltage change signal representing a selected load voltage to be applied to the lighting load. The controller is connected to the tap switches for selectively closing one of the tap switches to produce said prescribed voltage value across the second winding of the main transformer whereby the selected load voltage is output across the first winding of the main transformer and applied to the lighting load without interruption of the lighting. A transient control circuit is connected across an output of the tap switches for dissipating transient currents during switching of tap switches.

A method and system of lossless compression of integer data using a novel backward-adaptive technique. The adaptive Run-Length and Golomb/Rice (RLGR) encoder and decoder (codec) and method switches between a Golomb/Rice (G/R) encoder mode only and using the G/R encoder combined with a Run-Length encoder. The backward-adaptive technique includes novel adaptation rules that adjust the encoder parameters after each encoded symbol. An encoder mode parameter and a G/R parameter are adapted. The encoding mode parameter controls whether the adaptive RLGR encoder and method uses Run-Length encoding and, if so, it is used. The G/R parameter is used in both modes to encode every input value (in the G/R only mode) or to encode the number or value after an incomplete run of zeros (in the RLGR mode). The adaptive RLGR codec and method also includes a decoder that can be precisely implemented based on the inverse of the encoder rules.

The present invention provides an apparatus providing plural wireless transceivers within a desired power budget and associated methods. A plurality of wireless communication modules, each having a lower-power state and a higher-power state are provided, drawing power from a common source. Arbitration is performed to control which of the plurality of wireless communication modules are in the higher-power state, thereby controlling total power delivered by the power source to the plurality of wireless communication modules.

A method of controlling an electric machine, the method comprising storing a plurality of power maps, each power map comprising control values for driving the electric machine at different power, and selecting a power map in response to an input signal. Additionally, a control system for an electric machine, and a product incorporating the control system and electric machine.

A method and system of lossless compression of integer data using a novel backward-adaptive technique. The adaptive Run-Length and Golomb/Rice (RLGR) encoder and decoder (codec) and method switches between a Golomb/Rice (G/R) encoder mode only and using the G/R encoder combined with a Run-Length encoder. The backward-adaptive technique includes novel adaptation rules that adjust the encoder parameters after each encoded symbol. An encoder mode parameter and a G/R parameter are adapted. The encoding mode parameter controls whether the adaptive RLGR encoder and method uses Run-Length encoding and, if so, it is used. The G/R parameter is used in both modes to encode every input value (in the G/R only mode) or to encode the number or value after an incomplete run of zeros (in the RLGR mode). The adaptive RLGR codec and method also includes a decoder that can be precisely implemented based on the inverse of the encoder rules.

System and method for power controller. According to an embodiment, the present invention provides a power factor correction apparatus. The apparatus includes a multiplier component that is configured to process a first input signal and a second input signal. For example, the first input signal is associated with a rectified alternating current signal, and the second input signal is associated with an error signal. The multiplier component further is configured to generate a first output signal based on the first input signal and the second input signal. The apparatus also includes a comparator component that is configured to process a third input signal and fourth input signal. The third input signal is associated with the first output signal. The comparator component is further configured to generate a second output signal based on the third input signal and the fourth input signal.

The invention relates to a system and a power supply method, on board an aircraft. The power supply system of an aircraft comprises several generators powering with 230 volts A.C. several distinct electrical cores, wherein the various loads of the aeroplane are connected to each of these cores, in which each core comprises:

• • an input driver (40),
  • several identical power modules (CVS1 . . . CVSn),
  • means of placing in parallel several power modules comprising interconnection inductances (41) between power modules, and a switching matrix (42, 44) comprising a set of contactors,
  • means (52) of piloting the contactors of the switching matrix (42, 44), so as to reconfigure all of these contactors in the case of failure of a power module,
  • several output filters (43),
  • contactors (44) of the switching matrix (42, 44) that may each be connected to at one load (Cij).

In a duplex radio link wherein digital data information from a data interface is transmitted from a local terminal to a remote terminal over fading dispersive channels, a method and transceiver are described that provide for transmission at an adaptive data rate. The transmission is at a constant symbol rate so that the signal bandwidth can be fixed and at the remote terminal receiver the input sampling rate can be fixed. The digital data information is transmitted over a constant data rate interval in accordance with a selected data rate mode that is a function of direct sequence spreading gain, error correction code rate, and signal constellation type. The data rate is adapted by selecting a data rate mode that is a function of the arrival rate of data packets from the data interface and a link quality measure fed back from the remote terminal. The data packet arrival rate is controlled as a function of the link quality measure and the current data packet arrival rate. In systems with multiple transmit diversity channels, independent data is sent over each of the transmit diversity channels. The adaptive data rate technique utilizes both orthogonal transmit diversities such as frequency and troposcatter polarization diversity as well as nonorthogonal transmit diversities in a Multiple-input Multiple-Output (MIMO) configuration. A single antenna troposcatter link using angle diversity and adaptation of data rate by feedback communications is described. In an idealized feedback communication example, the single antenna system in a Ku-band application is shown to have 15.5 times the data rate capability of a conventional two-antenna system at S-band.

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.

The present invention discloses an LCC and MMC series-connected HVDC system with DC fault ride-through capacity, comprising rectifier and inverter linked by DC transmission line; Both the positive pole and the negative pole of the rectifier and the inverter consist of line-commutated converter and modular converter in series-connection; the modular converter adopts one MMC or several parallel-connected MMCs. The present invention has the advantage of low cost, low power loss and high reliability of the LCC, as well as flexible control, low harmonics and AC voltage support of the MMC. Further, the present invention is able to deal with DC fault by itself, hence additional DC fault clearing equipment is not needed. As a result, the present invention is suitable for the field of long-distance large-capacity power transmission and has broad development potential.

The present invention discloses a separator for an electrochemical element which comprises wet nonwoven fabric containing fibrillated cellulose, non-fibrillated fiber, and fibrillated heat-resistant fiber having all of a softening point, a melting point and a thermal decomposition temperature of 250° C. or higher and 700° C. or lower, and dimensional change rates of MD and CD subjected the wet nonwoven fabric to heat treatment at 250° C. for 50 hours of each −3% to +1%.

An unmanned aerial vehicle (UAV) is provided with a plurality of synthetic jet actuators and a nonlinear robust controller. The controller compensates for uncertainty in a mathematic model that describes the function of the synthetic jet actuators. Compensation is provided by the use of constant feedforward best guess estimates that eliminate the need for more highly computationally burdensome approaches such as the use of time-varying adaptive parameter estimation algorithms.

If supply of power from a main power source is insufficient but power being supplied from a communication interface (such as a USB interface) is sufficient, an image sensing apparatus (such as a digital video camera or digital camera) supplies power from the communication interface to a limited number of components. As a result, the image sensing apparatus is capable of functioning as a bus-powered device.

A directional resistivity tool includes a pair of transmitters deployed between at least one pair of receivers. Each of the transmitters and receivers preferably includes collocated z-mode and x-mode antennae. Exemplary embodiments may further include additional receivers, for example, additional pairs of receivers deployed axially about the transmitters or one or more deep reading receivers deployed on one axial end of the transmitters. Tools in accordance with the invention enable directional resistivity measurements to be acquired at multiple depths of investigation using fewer transmitter firings than conventional tools.

A remote monitoring system for a mobile storage tank having a product container in which a remote telemetry unit gathers liquid level and head space pressure data and global position data. The remote telemetry unit effects a wireless transmission of a standard message structure containing the pressure and level data and the global position data. In addition, in case of a storage tank having a thermal shield fluid, pressure and level data for the shield fluid itself may also be in the standard data record as well as acceleration data from an accelerometer to indicate tank damage. If upset conditions of pressure and liquid level are reached in the thermal shield and/or product container, vapor may be vented in accordance with preset programming in order to attempt to reestablish liquid level and vapor pressure above set points.