1724results about How to "Smooth switching" patented technology

A method is provided for establishing P2P radio connection in wireless communication networks, comprising: the user equipment, as the link probing originator, transmits link probing signals via the allocated direct communication link to another user equipment as the link probing responder, according to the initial probing power provided by the wireless communication system; said another user equipment transmits the ACK message to the link probing originator via the direct communication link when receiving the link probing signals and said link probing signals meet the basic requirement for direct communication; the user equipment, as the link probing originator, monitors the direct communication link, and communicates directly with the link probing responder via the direct communication link after detecting the ACK message from the link probing responder. This method effectively guarantees the procedure of establishing P2P communication between the user equipments in P2P communication course, by utilizing the link probing process of transmitting link probing signals.

A radio communication apparatus having a function for allowing it to be connected both to an ad hoc network and to a mobile communication network, yet having a structure that is not complicated with cost increases suppressed, and yet being capable of smoothly switching between the networks. The radio communication apparatus (10) uses a TDD-CDMA system for communication with a base station of the mobile communication network, and comprises ad hoc communication means for performing a radio communication with another neighboring radio communication apparatus by making an ad hoc network in conjunction with the other radio communication apparatus. This ad hoc communication means, when communicating with the other radio communication apparatus, uses the TDD-CDMA system common to the mobile communication network.

A drive circuit drives LED groups each of which has a plurality of LEDs connected in series. The drive circuit includes nMOSFETs which drive the LED groups, current regulating circuits which determine drain currents of the nMOSFETs, and subtracters which control the current regulating circuits to keep the sum of the current values of adjacent two nMOSFETs constant. The LEDs can be switched on/off efficiently even when there are differences between forward voltages of the LEDs.

A robot apparatus having a multi-link structure including a plurality of links and joints serving as link movable sections, and in which at least some of the links are driven by combination of position control and force control is disclosed. The apparatus includes: position control means for performing the position control on the links, which are driven by position control and force control; position control means with force constraint for placing the force control before the position control so as not to cause the magnitude of an external force to exceed a set value; force control means for performing the force control on the links; and integrated force/position control means for controlling driving of the joints by switching the position control means, the position control means with force constraint, and the force control means, and unifies the position control and the force control.

An imaging apparatus includes: a first pixel which receives both visible light and infrared light, and a second pixel which receives infrared light, both pixels being formed on an imaging device; an infrared light component estimation unit which estimates, based on spectral characteristics of light received by the first pixel and spectral characteristics of light received by the second pixel, a magnitude of an infrared light component contained in a signal outputted from the first pixel from a signal outputted from the second pixel; and a subtraction unit which subtracts the estimated infrared light component from the signal outputted from the first pixel.

Disclosed herein is a SONET/SDH transmitter provided in a transmission system in which a SONET/SDH network and an IP network are connected with optical LAN-IF. The SONET/SDH transmitter has a redundancy transmission line structure consisting of two transmission lines, a K-packet processing section, and a transmitting section. The K-packet processing section is used for generating a specific byte (SONET K1/K2 byte) of data representing transmission-line switching control information about the transmission lines, packetizing the generated data, and outputting a packet. The transmitting section is used for transmitting the packet to the transmitter provided opposite through the transmission lines. This SONET/SDH transmitter further has a redundancy line switching section. The redundancy line switching section is capable of selecting a transmission line, where a transmission signal with information data is transmitted, according to a status in which a packetized specific byte of data from the transmitter opposite is received.

The invention provides a microgrid and microsource control method based on a virtual synchronous electric generator. The method comprises the following steps of building a mechanical equation and an electromagnetic equation of the virtual synchronous electric generator, carrying out microsource active control through active adjustment of the virtual synchronous electric generator, carrying out microsource reactive control through reactive adjustment of the virtual synchronous electric generator and achieving seamless switching between different operating modes of a microgrid. The microgrid and microsource control method based on the virtual synchronous electric generator has the active and reactive adjustment capacity similar to that of the synchronous electric generator, can simulate the inertia and the damping characteristic of the synchronous electric generator, can overcome the impact on a power grid from inertialessness of a traditional grid-connected inverter, and can effectively improve the capacity of the power grid to accept the renewable energy sources.

The invention provides a three-dimensional printer and a three-dimensional printing method. The three-dimensional printer comprises multiple wire wheels, a printing head, a forming base, a movable motor component and a consumable supplying motor component, wherein each wire wheel is provided with a kind of imaging material, the printing head is used for extruding the imaging material, the consumable supplying motor component comprises multiple motors, each motor is used for driving the corresponding imaging material to be transferred into the printing head, wherein a wire changing device is arranged between the consumable supplying motor component and the printing head, multiple fiber material input ends and a fiber output end are arranged on the wire changing device, the fiber material output end is connected with the printing head, and the wire changing device is communicated with a guide hole between each fiber material input end and the fiber output end. The invention also provides the three-dimensional printing method applied to the three-dimensional printer. The guide holes are used for guiding fiber materials so as to improve imaging stability, the displacement of wires is avoided, and multi-color volume rendering can also be realized through the single printing head, and the three-dimensional printer is simple in structure and low in cost.

The invention relates to an optical storage alternating current and direct current hybrid micro-grid system and a control method of the system. The system and the method are characterized in that a hybrid micro-grid comprises an alternating current micro-grid subsystem, a direct current micro-grid subsystem and a power exchange control system; the alternating current micro-grid subsystem comprises an alternating current side photovoltaic power generation unit, an alternating current load and a grid-connected interface; the direct current micro-grid subsystem comprises a direct current side photovoltaic power generation unit, a storage battery energy storage unit and a high/low voltage direct current load; the power exchange control system comprises a two-way AC/DC power converter, a transformer, a micro-grid controller and a communication system, the storage battery energy storage unit is used for controlling direct current bus voltages, and P/Q control is adopted in the two-way AC/DC power converter. Under the stabilizing effect of direct current side energy storage, the direct current micro-grid subsystem conducts photovoltaic power generation and is connected to a large power grid through the alternating current micro-grid subsystem at constant power, and the photovoltaic utilization rate is increased. By means of the control method, the power supply reliability and economical efficiency of the hybrid micro-grid are effectively improved.

To enable a smooth transition from motor travel to hybrid travel despite the situation-of-charge of a battery and reduce shock at the time of engagement of a clutch element.

A hybrid system uses a state map 70 for deciding target torques of an engine and a motor on the basis of an accelerator stroke position, a vehicle velocity and a battery state-of-charge SOC. In the map 70, there are defined a motor maximum torque line that demarcates a motor upper limit torque that changes depending on the SOC and a motor margin torque line that is a predetermined margin lower than the motor maximum torque line. When the position on the map determined by the accelerator stroke position, the vehicle velocity and the battery state-of-charge is below the margin torque line, the hybrid system performs electric travel, and when the position on the map is on or above the margin torque line, the hybrid system initiates engine startup processing, and when the position on the map becomes a torque position exceeding the maximum torque line, the hybrid system sets target torques of the engine and the motor in order to achieve a torque corresponding to the accelerator stroke position.

The particular status of a Multiple Network Interface Mobile Device (MID) is identified and particular problems associated with that status are addressed by activating different modes of operation depending upon whether the MID is stationary or in motion. In particular, when the mobile device is in motion, the multiple network interfaces are used to prevent packet loss, and when the mobile device becomes stationary, the multiple network interfaces are used to enhance bandwidth to achieve superior Quality of Service (QoS). MIDs thus are allowed to utilize multiple interfaces simultaneously for bandwidth incremental increases if the mobile device is stationary. MIDs also are allowed to utilize multiple interfaces simultaneously for packet loss recovery and smooth and seamless transitioning from one interface to another when the mobile device is in motion.

A rotational shaft receives drive power from an engine and a first motor, and drives front wheels through front clutches. A second motor drives rear wheels. The first motor and the second motor are supplied with electric power from a battery. A main ECU controls an electric vehicle mode in which the first clutches are disengaged, the supply of fuel to the engine is stopped, and the second motor drives the rear wheels to propel a hybrid vehicle, by dividing the electric vehicle mode into a first propulsion mode and a second propulsion mode. In the first propulsion mode, the first motor is de-energized. In the second propulsion mode, a load imposed on the second motor is greater than that of the first propulsion mode, and the first motor is supplied with electric power to rotate the rotational shaft at a predetermined speed.

A speed-change transmission apparatus for effecting a speed-changing on an engine drive force with utilizing a continuously variable speed-change device, a plurality of planetary transmission mechanisms and a plurality of clutches is constructed to be capable of effecting the speed-changing operation smoothly, regardless of a centrifugal force generated in the clutches. An output from the continuously variable speed-change device and a drive force from the engine are combined by a planetary transmission section. The drive force from this planetary transmission section is transmitted via a clutch section to an output shaft. First, second, third and fourth clutches of the clutch section are configured to be switched over respectively between an engaged condition and a disengaged condition, as clutch members are engaged with or disengaged from output side rotational members.

The invention discloses a small cell switching method and base stations. The method comprises the steps that when the main base station determines that the signal quality between UE and a small source cell is lower than a first preset threshold value according to a wireless signal measuring result reported by the UE, or when the main base station determines that the load of the small source cell is higher than a second preset threshold value according to the load information acquired from a slave base station, or when the small source cell requires to be switched out of the UE, the main station selects an adjacent small cell with the signal quality and the load condition being capable of meeting the requirement of the UE for the UE according to the measuring result as a target small cell, and the UE is indicated to be switched to the target small cell. According to the technical scheme, the purpose that the UE is stably and quickly switched to the target small cell is achieved.

The invention relates to a simple, high-efficiency and reliable cold-warm air-conditioning water heater, which comprises a refrigerant loop, a hot-water condensing heat exchanger, a hot-water storing box and a signal acquisition and circuit control system. A scheme I of the invention is characterized in that: an exhaust opening of a compressor is connected with an air inlet of a three-way valve; a first air outlet of the three-way valve is connected with a refrigerant inlet of the hot-water condensing heat exchanger, and a second air outlet is connected and communicated with a first interfaceof a four-way valve and a refrigerant outlet of the hot-water condensing heat exchanger; a second interface, a third interface and a fourth interface of the four-way valve are respectively connected with the upper ports of an outdoor-wind heat exchanger and an indoor-wind heat exchanger and an air inlet of an air-liquid separator, and a capillary is connected in series between the lower ports of the outdoor-wind heat exchanger and the indoor-wind heat exchanger; an air outlet of the air-liquid separator is connected with an air inlet of the compressor; and an electromagnetic guide-valve low-voltage air-outlet pipe of the three-way valve is communicated with an air-sucking pipe of the compressor, and an electromagnetic guide-valve high-voltage air-inlet pipe of the four-way valve is communicated with an exhaust pipe of the compressor. A scheme II of the invention is characterized in that: the hot-water condensing heat exchanger is added between the exhaust opening of the compressor of a refrigerant-circulating loop of a cold and warm air conditioner and an air inlet of the four-way valve, and the electromagnetic guide-valve high-voltage air-inlet pipe of the four-way valve is communicated with the exhaust pipe of the compressor; and the two technical schemes both have four functions of hot-water making and refrigerating, hot-water making, refrigerating and heating.