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.

A mechanical-hydraulic composite energy-saving servo hydraulic machine with a toggle rod mechanism comprises a work table which is fixed on a base. A machine body is of a three-beam and four-column structure, the four stand columns are hollow, pull rods penetrate through the inside of the stand columns, the two ends of each pull rod are fixed on an upper beam and the base respectively through tightening nuts, guide rails are fixed on the stand columns, and linear guide rail sliding blocks are fixed on the outer walls of press sliding blocks and slide up and down on the guide rails. By combining high control precision of a servo motor, high operation speed of a mechanical structure and large load of a hydraulic cylinder, idle stroke is driven by the independent servo motor and the mechanical structure, and work stroke is driven by a hydraulic system. The mechanical-hydraulic composite energy-saving servo hydraulic machine can lower power of the servo motor, improve the energy utilization rate and improve flexibility.

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 discloses a control method of a variable rotor rotating speed helicopter. The variable rotor rotating speed helicopter is provided with a continuous stepless speed change transmission mechanism and a turboshaft engine with variable power turbine rotating speed. The control method comprises steps, firstly, calculating the required power of the helicopter according to the atmospheric environment, the forward flight speed and the rotor speed; calculating engine performance parameters of the turboshaft engine under the condition of a certain power turbine rotating speed according tothe helicopter required power; and finally, taking the engine performance parameters as initial guessing values, and taking variable speed distribution factors as optimization variables, carrying outoptimization solution on a helicopter / engine comprehensive system performance calculation model of the variable rotor rotating speed helicopter, and controlling the continuous stepless speed change transmission mechanism and the power turbine according to the solved optimal variable speed distribution factors. The invention further discloses a control device of the variable rotor rotating speed helicopter. The optimal rotor rotating speed and the optimal power turbine rotating speed can be obtained at the same time, and the comprehensive performance of a helicopter / engine system is remarkablyimproved.

The invention discloses a bionic leg type bounce experiment device. The bionic leg type bounce experiment device comprises a frame portion, a torso portion, a thigh portion, a knee joint portion, a lower leg portion, a sole portion, and a device drive control system; and the device drive control system is used for driving and controlling the operation of the entire experimental device. According to the bionic leg type bounce experiment device, a bounce device is driven by two hydraulic cylinders, and the characteristic of a large output force of the hydraulic drive is used for improving the bearing capacity of the device; the instantaneous curvature center trajectory of a specific biological joint motion is simulated by means of the rich motion characteristics of a gear-five-bar mechanism,so that the device gait is closer to the jumping motion of the creature, and an experimental platform is provided for studying the influence of the instantaneous curvature center trajectory on the jump performance; and the method of combining the hydraulic drive and the spring drive is used as an elastic actuator of a robot, so that the hydraulic system output energy with less power can be storedand then released suddenly in a periodic manner, therefore, the required power, shape volume and weight of the hydraulic power system are reduced, and the energy utilization efficiency is improved.

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.

A mechanical-hydraulic composite energy-saving servo hydraulic machine with a toggle rod mechanism comprises a work table which is fixed on a base. A machine body is of a three-beam and four-column structure, the four stand columns are hollow, pull rods penetrate through the inside of the stand columns, the two ends of each pull rod are fixed on an upper beam and the base respectively through tightening nuts, guide rails are fixed on the stand columns, and linear guide rail sliding blocks are fixed on the outer walls of press sliding blocks and slide up and down on the guide rails. By combining high control precision of a servo motor, high operation speed of a mechanical structure and large load of a hydraulic cylinder, idle stroke is driven by the independent servo motor and the mechanical structure, and work stroke is driven by a hydraulic system. The mechanical-hydraulic composite energy-saving servo hydraulic machine can lower power of the servo motor, improve the energy utilization rate and improve flexibility.

The invention discloses a large-output-force robot flexible energy-storing joint based on gravity energy storing and relates to a flexible driving device used for a robot. The large-output-force robot flexible energy-storing joint based on gravity energy storing aims to solve the problems that due to the linear type force output of an existing series elastic actuator of a robot joint, the structure is not compact, occupied space is large, power required by a motor is large, and accurate force output control and accurate position control of the joint are not facilitated. The large-output-force robot flexible energy-storing joint based on gravity energy storing comprises an upper limb connecting plate, an upper limb motor shell, a joint gearbox, a lower limb connecting plate, a lower limb support, a speed reducer, a rotary transformer, a motor provided with an encoder, an series elastic body and a torsion spring, wherein the joint gearbox comprises a shell body, a third bevel gear, a fourth bevel gear, a first bevel gear, a second bevel gear and a joint shaft, the series elastic body comprises an inner ring body, an outer ring body and at least four groups of wavy clips, the inner ring body and the outer ring body are concentric, and the at least four groups of wavy clips which are integrated are connected between the inner circle and the outer circle of the inner ring body in the circumferential direction and between the inner circle and the outer circle of the outer ring body in the circumferential direction. The large-output-force robot flexible energy-storing joint based on gravity energy storing is applied to the field of robots.

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.

The invention provides an active modular converter test system, which comprises an electric reactor, an external AC power supply and two converter chains. One end of the first converter chain is connected with one end of the second converter chain through the electric reactor, the connection point is defined as a first connection point, the other ends of the two converter chains are directly connected, and the connection point is defined as a second connection point; the first connection point and the second connection point are respectively connected to two ends of the external AC power supply; each of the first converter chain and the second converter chain comprises at least one sub-module; each sub-module comprises an energy storage unit, a power unit and a sub-module control unit; the power unit comprises a full-bridge circuit consisting of a direct-current capacitor and four power semiconductor switching devices; the direct current side of the power unit is connected with the energy storage unit, and the alternating current side of the power unit is connected with a bypass switch in parallel; and the sub-module control unit takes energy from the direct-current capacitor. The scheme can simulate real working conditions on site, and is low in required power, low in scheme cost and high in reliability.

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 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.

The present invention involves a car defrosting fog system, including the battery module, and the output end of the battery module is connected to one end of the deformed dehogenetic switch, and the other end of the defrosting fog switch is connected to the electric heating wire.The present invention replaces the original high -voltage PTC with electric heating wires. The demand power is small, which greatly improves the overall efficiency. The structure is simple and the arrangement is convenient.

The invention provides a power allocation control method and device of mobile working vehicles. A PID controller (anti-flameout controller) is separately configured for a walking system and a working device so as to realize the anti-flameout control during single work of the walking system or the working device, and the power allocation during simultaneous work of the walking system and the working device. The simultaneous work of the walking system and the working device can be guaranteed, however, when the output power of an engine is insufficient, the required power of the walking system and the working device is reduced, but the two parts are ensured to still work instead of completely stopping one of the two parts, thereby avoiding the situation that the engine is flamed out when one part is completely stopped and the load of the other part is too large.

The invention relates to the technical field of tide rising alarms, in particular to a simple beach tide rising warning indicator, which comprises a shell, a telescopic rod, a warning module, a winding module, a sliding block, a power generation module and a rechargeable power module. The simple beach tide rising warning indicator is simple in structure, and has no need for setting a micro-processor. A floating block, a volute spiral spring and an elastic connecting rope are matched to achieve folding and unfolding of the warning module during tide rising, the number of electric parts is extremely small, the requirement for electric quantity is low, practical significance and popularization value are achieved, and it is expected that good economic benefits can be generated.

The invention relates to a waist joint of a humanoid robot and a realization method thereof, comprising a torque transmission mechanism and a tension spring unloading mechanism, the torque transmission mechanism includes a large pulley and a small pulley and a synchronous belt, and the pitch diameter of the large pulley is the pitch diameter of the small pulley 2 times, the small pulley is fixedly connected with the upper body of the humanoid robot. When the humanoid robot bends down, the nonlinear time-varying torque generated by the gravity of the upper body on the central axis of the small pulley is transmitted to the large pulley by the timing belt; the tension spring unloading mechanism includes Extension spring, guide rail and slider, the hooks at both ends of the extension spring are respectively connected to the shoulder screw on the side of the large pulley and the hook on the top of the slider; the slider slides freely horizontally in the fixed guide rail under the large pulley, so that the extension spring The large pulley is always kept perpendicular to the guide rail during rotation. The invention greatly reduces the torque ripple of the motor, improves the dynamic characteristics of the humanoid robot, reduces the difficulty of control, reduces the power of the motor, and reduces energy consumption.