38results about How to "Low power requirement" patented technology

The invention discloses electro-hydraulic mix-drive sand mixing equipment. The equipment comprises a skid seat, motors, a hydraulic pump. a discharge centrifugal pump, a suction centrifugal pump, a mixing tank, a dry adding system, a liquid adding system and a sand conveying auger system; the motors, the hydraulic pump, the discharge centrifugal pump, the suction centrifugal pump, the mixing tank,the dry adding system, the liquid adding system and the sand conveying auger system are integrated and arranged on the skid seat in a skid-mounting mode; two motors are arranged and comprise a firstmotor and a second motor; the first motor drives the discharge centrifugal pump; and the second motor drives the hydraulic pump, so as to drive the suction centrifugal pump, the mixing tank, the dry adding system, the liquid adding system and the sand conveying packing auger system, wherein the motors are variable-frequency integrated motors. The equipment has the beneficial effects that through application of the two variable-frequency integrated motors, firstly, arrangement of an independent variable frequency cabinet is effectively reduced, so that the overall size of the sand mixing equipment is effectively compressed, and transportation and well site arrangement of equipment are more flexible and convenient; and secondly, the control system is more concise, and power matching of the sand mixing equipment is optimized.

The invention discloses a planet coupled hybrid system for a caterpillar and a control method for the same, and belongs to the technical field of hybrid vehicle drive. The system comprises a generator; the generator is connected with an integrated controller through a generator control unit, a vehicle-mounted battery pack is connected with the integrated controller through a battery management system, and driving motors are connected with the integrated controller through motor controllers; the motor controllers are connected with the vehicle-mounted battery pack; an output shaft of the generator is connected with a central horizontal axis through an electric control clutch and a main reducer in turn; two ends of the central horizontal axis are connected with a gear ring respectively; planet carriers are connected with caterpillar track driving wheels through lateral transmission mechanisms; sun gears are connected with output shafts of the driving motors through gears; the central horizontal axis is provided with a first electric control brake; and the sun gears on the two sides are provided with a second electric control brake and a third electric control brake. According to the control method, the integrated controller calculates vehicle demand power in real time according to a speed feedback signal and an accelerator pedal signal, and detects the remained capacity of the battery to control the switching of work modes of the hybrid system.

Provided are a method and an apparatus for a NarrowBand-Internet of Things (NB-IoT) terminal to perform a mobility process. The method may include: transmitting an RRC connection re-establishment request message to a base station when a pre-set event occurs; receiving an RRC connection re-establishment message from the base station; and resuming a signaling radio bearer on the basis of the RRC connection re-establishment message.

The invention discloses an electric automobile hybrid energy storage charging system which comprises a charging pile, a transformer, a rectifier, an assistant accumulator, a direct current (DC)/direct current (DC) convertor and a power battery. The rectifier, the assistant accumulator, the DC/ DC convertor and the power battery are arranged on a pure electric automobile. The charging pipe is connected with a primary side of the transformer. An input side of the DC/ DC convertor and a super-capacitor are connected on a secondary side of the transformer in a parallel mode. An output side of the DC/ DC convertor is connected with the power battery; the power battery is connected with a drive motor through a vehicle-mounted motor controller. The assistant accumulator is a titanium acid accumulator or a super capacitor. The electric automobile hybrid energy storage charging system provides a novel charging energy storage scheme for the pure electric automobile.

The invention provides a multi-stage hybrid pressurizing system used for an engine and provided with an electric pressurizer arranged front. An air inlet communicates with the air input end of a firstair compressor of the electric pressurizer and the air input end of a second air compressor of a turbine pressurizer through a pipeline. The air output end of the first air compressor communicates with the air input end of the second air compressor through a pipeline. A one-way valve is arranged on the pipeline, communicating with the second air compressor, of the air inlet. The air output end ofan air storing tank communicates with the air input end of the first air compressor through a pipeline, and the pipeline is provided with a compressed air nozzle. The air output end of the second aircompressor communicates with an air input pipe of the engine. An air output pipe of the engine communicates with a turbine air input end of the turbine pressurizer. The air output end of the turbinepressurizer communicates with external air. A pressure sensor is arranged in the air input pipe of the engine.

The invention discloses a special vehicle power system based on a dual-end output work/traveling driving motor. The special vehicle power system comprises a vehicle control unit, a main driving motor and its controller, a driving/traveling driving motor and its controller, a first clutch transmission device, and a second clutch transmission device; the vehicle control unit controls the coordinating work of the whole power system, and the main driving motor is connected to a main driving shaft walking device; during the work, the driving/traveling driving motor is used as a working driving device; when the vehicle accelerates and climbs, the driving/traveling driving motor can also be used as an assistant driving device; first and second clutch input disks in the first and second clutch transmission devices are respectively installed at both ends of the output shaft of a work/traveling driving motor rotor, a first driven shaft is connected to a working device and a second driven shaft is connected to an assistant driving shaft traveling device; the system can realize the functional conversion of the assistant driving traveling and work of the work/traveling driving motor; on the basis of ensuring the dynamic property of the whole vehicle, the system can reduce the power of the main driving motor and optimize the vehicle energy utilization rate.

The invention discloses a rail engineering vehicle transmission method, which comprises the following steps of: arranging a whole vehicle power supply system and a high-speed running system on a powervehicle, and arranging a low-speed running system on an operating vehicle; the operation vehicle is independently arranged, or an operation system is arranged on the power vehicle and the operation vehicle; b) the whole vehicle power supply system supplies power to the operation system, and selectively supplies power to the high-speed running system or the low-speed running system; c) high-speedwalking is realized through a high-speed walking system, and the high-speed walking system adopts electric transmission traction to realize high-speed walking and low control precision; and (D) low-speed walking is achieved through the low-speed walking system, all-electric transmission traction is adopted in the low-speed walking system, speed reduction is conducted through a speed reduction mechanism, and therefore low-constant-speed walking and high control precision are achieved. The technical problem of power transmission of the double-power-source rail operation vehicle in the high-speedwalking mode and the low-speed walking mode can be solved, and the requirements for the walking speed and the control precision under different working conditions are met.

The invention discloses an energy-saving type industrial robot and a drive unit time-sharing control method thereof. An arm base is arranged on a base, and is driven by an arm base drive unit; a largearm is arranged at the top end between two clamping keys of the arm base, and the arm base drive unit and a large arm drive unit synthesize drive through a first differential wheel system; a small arm is arranged at the top end of the large arm, and the arm base drive unit and a small arm drive unit synthesize drive through a second differential wheel system. The energy-saving type industrial robot superposes output power of the large arm drive unit with output power of the arm base drive unit through time-sharing no-conflict control of the arm base drive unit, so that matching between load operation demanded power with drive unit output power is realized; the large arm drive unit and the small arm drive unit are in respective high-efficiency regions, so that energy efficiency is improved; and meanwhile, power of the drive units is superposed, so that assembly power of the robot drive unit is reduced under the condition of meeting maximal power needs of the industrial robot.

The invention relates to a medium-frequency quenching process of a smoothing roll and quenching equipment thereof. The process is characterized by comprising the following steps: placing an inductive part of a medium-frequency inductor on a surface of the smoothing roll to be quenched; fixing the medium-frequency inductor and setting the smoothing roll in a rotary movement to form a state that the quenching part of the smoothing roll continuously moves in the medium-frequency inductor gradually; inputting a medium-frequency current to the medium-frequency inductor, wherein the surface, close to the medium-frequency inductor, of the smooth roll is subjected to electromagnetic induction to generate vortex in the smoothing roll so as to heat the surface, close to the medium-frequency inductor, of the smoothing roll; when the surface of the smoothing roll is heated to the austenitizing temperature, transferring to a spraying and cooling region to quench so as to realize a local quenching flow; and continuously rotating the smoothing roll to gradually and continuously quench the surface of the smoothing roll through the medium-frequency inductor. The process has the advantages that the medium-frequency heating power equipment is less in power requirement, the inductor is simple to manufacture and low in cost, and the process can be suitable for surface quenching thermal treatment of smoothing rolls in various specifications by changing the inductor and adjusting the rotating speed of the smoothing speed.

The invention provides a multi-stage hybrid pressurizing system used for an engine and provided with a rear-arranged electric pressurizer. The system is characterized by comprising the electric pressurizer, the engine, a turbine pressurizer, an air storing tank and a controller. An air inlet communicates the air input end of a first air compressor of the turbine pressurizer through a pipeline. Theair output end of the first air compressor communicates with the air input end of a second air compressor through a pipeline. The air output end of the air storing tank communicates with the air input end of the second air compressor through a pipeline, and the pipeline is provided with a compressed air spray nozzle. The air output end of the second air compressor communicates with an air input pipe of the engine. The air output end of the first air compressor communicates with the air input pipe of the engine through a pipeline, and the pipeline is provided with a one-way valve. An air output pipe of the engine communicates with the turbine air input end of the turbine pressurizer. The air output end of the turbine pressurizer communicates with external air.

A metal sulfide based non-volatile memory device is provided herein. The device is comprised of a substrate, a backplane, a planar memory media including a dense array of metal sulfide based memory cells, and a MEMS probe based actuator. The cells of the memory device are operative to be of two or more states corresponding to various levels of impedance. The MEMS actuator is operable to position micro/nano probes over the appropriate cells to enable reading, writing, and erasing the memory cells by applying a bias voltage.

The invention discloses a single-ended double output operation/running drive motor-based special vehicle power system, comprising a vehicle controller, a main drive motor and controller thereof, an operation/running drive motor and controller thereof and a double one-way clutch transmission device. The vehicle controller is used for controlling the whole power system to work coordinately; the main motor is connected with a vehicle main drive shaft walking device and used for driving the vehicle main drive shaft walking device; an operation/running drive motor can serve as a vehicle running auxiliary drive device when a vehicle is accelerated and climbs a hill and as an operation driving device when the vehicle is operated; the double one-way clutch transmission device comprises two one-way clutches opposite in drive directions, one of output shafts is connected to a front axle walking device, and the other of the output shafts is connected to an operation device. By applying the system, switching between the functions of auxiliary drive running and operation of the operation/running drive motor can be realized, and the power of the main drive motor can be lowered and the use ratio of the vehicle energy can be optimized on the premise of guaranteeing the vehicle power performance.

The invention discloses a light-driven SiC/GaN-based semiconductor device. The base electrode in the traditional BJT structure is cancelled, and ultraviolet light passes through a transparent electrode and a thin emitter region and enters a base region to introduce light excitation and generate electron-hole pairs in order to provide a base current for the base of the BJT. A rounded quadrangular frustum device structure is adopted, which improves the withstand voltage of the device. The invention further discloses a process for manufacturing the light-driven SiC/GaN-based semiconductor device.The device has the same advantages as the traditional BJT. Moreover, the light injection current gain, breakdown voltage, EMI immunity, switching speed and stability of the device are improved, the driving loss and the response time are reduced, and the manufacturing cost is reduced. The light-driven SiC/GaN-based semiconductor device and the manufacturing process are applicable to the field of low-power and high-power semiconductor power devices.

A machine for applying support members to opposing sides of opposing edges of a sheet material includes a support tab applicator assembly that applies a first portion of a support tab along a longitudinal edge of a first side of the sheet material, a support tab finisher assembly that applies a second portion of the support tab disposed opposite the first portion to a second side of the sheet material disposed opposite the first side, and a hole punch assembly that cuts a hole through the sheet material. The machine also may include a strengthening film applicator assembly that applies a strengthening film along a longitudinal length of the first side of the sheet material and/or across the support tab.

Provided is a fuel cell or a fuel cell stack, wherein a means for reducing the concentration of unreacted alcohol is disposed on the cathode exhaust gas side. This means comprises in particular an additional electrochemical cell, to which a voltage is applied and which at least partially converts the unreacted alcohol into CO₂ and hydrogen or water by way of an electrochemical reduction reaction. Since the concentration of unreacted alcohol is generally low, the loss of power required for the additional reduction reaction does not result in any notable impairment of the efficiency of the fuel cell stack. The invention is thus not limited to direct-methanol fuel cells, but may also be similarly applied to high-temperature fuel cells, and particularly to high-temperature PEM fuel cells, in which the additional electrochemical cell disposed on the cathode exhaust gas side is advantageously able to convert the residual CO.

The invention provides a controllable electric supercharging device for an engine. The controllable electric supercharging device for an engine is characterized by comprising a connecting pipe, an electric control valve is arranged on the connecting pipe, and the connecting pipe is divided into a first connecting pipe and a second connecting pipe by a one-way valve; an end opening of the first connecting pipe serves as an inlet of the electric supercharging device, and an end opening of the second connecting pipe serves as an outlet of the electric supercharging device; the side surface of the first connecting pipe extends outwards to form a third connecting pipe, and the third connecting pipe communicates with the first connecting pipe; an electric supercharger is fixedly arranged at an end opening of the third connecting pipe, and the third connecting pipe communicates with an inlet of the electric supercharger; an outlet of the electric supercharger communicates with the second connecting pipe through a pipeline; and a compressed air inlet is formed in the side face of the end opening of the third connecting pipe, and compressed air enters the inlet of the electric supercharger through the third connecting pipe from the compressed air inlet. According to the controllable electric supercharging device for the engine, the required power of the electric supercharger is reduced, so that the heat productivity of a driving motor is reduced.

The present invention relates to a method for storage line beat in Vittbe code translator. For a Viterbi decoder, it is proposed to combine the butterfly structures of the corresponding trellis diagram in pairs in such a way that for each butterfly structure pair, the destination states of the two butterfly structures in the trellis diagram at the same time form starting states for two other butterfly structures. After the determination of the path metrics of the destination states of the two butterfly structures of a butterfly structure pair, in each case the path metrics of those two destination states of this butterfly structure pair which are the same time form starting states of another butterfly structure are then stored in the form of a common memory word.

The invention discloses a flexible mechanical conveying cleaning device which comprises an environmental sanitation equipment base body, a flexible mechanical conveying mechanism and a cleaning module, and the environmental sanitation equipment base body is connected with the cleaning module through the flexible mechanical conveying mechanism; the environmental sanitation equipment base body comprises a stock bin; the flexible mechanical conveyor comprises a conveying pipe and a material conveying spiral blade arranged in the conveying pipe, one end of the conveying pipe is connected with the stock bin, the other end of the conveying pipe is connected with the feeding end, and the material conveying spiral blade is driven by a first driving mechanism and forms a rotating pair with the conveying pipe; the sweeping module comprises a sweeping shell and a relay hopper which are communicated with each other, a rolling brush is arranged at the bottom in the sweeping shell, the relay hopper is connected with the feeding end of the flexible mechanical conveying mechanism, and the rolling brush is driven by a second driving mechanism. The robot has the advantages of being high in sweeping and conveying efficiency, compact in structure, capable of achieving multi-posture flexible long-distance closed mechanical feeding and the like, and can meet the operation requirements for sweeping and collecting granular materials, powdery materials and the like.

A method for lane detection for a camera-based driver assistance system includes the following steps: image regions in images that are recorded by a camera are identified as detected lane markings if the image regions meet a specified detection criterion. At least two detected lane markings are subjected to a tracking process as lane markings to be tracked. By means of a recursive state estimator, separate progressions are estimated for at least two of the lane markings to be tracked. Furthermore, for each of a plurality of the detected lane markings, a particular offset value is determined, which indicates a transverse offset of the detected lane marking in relation to a reference axis. By means of an additional estimation method, the determined offset values are each associated with one of the separate progressions of the lane markings to be tracked.