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9958 results about "Motive power" patented technology

In thermodynamics, motive power is a natural agent, such as water or steam, wind or electricity, used to impart motion to machinery such as an engine. Motive power may also be a locomotive or a motor, which provides motive power to a system. Motive power may be thought of as a synonym for either "work", i.e. force times distance [J], or "power" [J/s].

Start control system and method for main and auxiliary power hybrid ship

The invention discloses a starting control system and method for a main and auxiliary power hybrid ship, and relates to the field of ship power control, and the system comprises a multi-source data collection module which is used for obtaining a multi-source state data set of a ship power system; the fusion processing module is used for performing feature alignment processing on the multi-source state data set based on a multi-modal sensing data fusion algorithm to generate a hybrid power starting parameter set; the dynamic weight distribution module is used for constructing a dynamic weight distribution matrix according to the hybrid power starting parameter set; the cooperative control module is used for generating a main and auxiliary engine combined starting instruction set based on an improved cooperative control algorithm; and the execution and monitoring module is used for executing the main and auxiliary engine combined starting instruction set in a preset time window and monitoring the transient response characteristic of the propulsion system. According to the starting control system and method for the main and auxiliary power hybrid ship, the starting stability and the energy utilization efficiency of the hybrid ship are improved.
Owner:CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719

Hybrid Propulsion For Airborne Craft

A craft comprises at least one hull, a main wing coupled to the hull and configured to facilitate airborne operations of the craft, a plurality of propellers that include one or more electric motor propellers and one or more combustion motor propellers arranged along each of a port side and a starboard side of the main wing and configured to generate lift on the craft by blowing air over the main wing, and a control system. The control system comprises data storage having instruction code stored thereon that, when executed by one or more processors of the control system, causes the control system to: after receiving a takeoff indication, increase thrust generated by the electric motor propellers to cause the craft to transition from a hull-borne mode of operation to an airborne mode of operation, and after a thrust adjustment condition occurs, increase thrust generated by the combustion motor propellers.
Owner:REGENT CRAFT INC

Electric engine, control method, related device, motor controller and aircraft

The invention provides an electric engine, a control method, a related device, a motor controller and an aircraft, and relates to the technical field of aircrafts. The electric engine comprises a power motor, a heat dissipation system and a control module, a cavity is formed in the power motor, the control module is integrated in the cavity, the space occupied by the electric engine is reduced, and therefore the size of the aircraft is reduced; the control module comprises at least three integrated driving modules, part of the driving modules are electrically connected with the power motor so as to control the power motor, part of the driving modules are electrically connected with a variable pitch motor of the propeller so as to control the variable pitch motor, and part of the driving modules are electrically connected with a heat dissipation motor in the heat dissipation system so as to control the heat dissipation motor. The performance and efficiency of the electric engine are improved through unified integrated control over the power motor, the heat dissipation motor and the variable pitch motor. And through a unified control architecture, the system design is simplified, the development and maintenance cost is reduced, and the maintainability of the electric engine is improved.
Owner:SICHUAN AEROFUGIA TECH DEV CO LTD

Mooring system for floating offshore wind power platform, monitoring system, and monitoring method

A mooring system for a floating offshore wind power platform, a monitoring system, and a monitoring method. The mooring system comprises a static mooring system and a dynamic mooring system. The static mooring system comprises three mooring cable bundles. Upright columns (1) are consistent with the centers of the mooring cable bundles. The dynamic mooring system comprises a power unit, propeller units (4), and a control unit. A group of propeller units (4) is installed below each upright column (1) of the platform, and each group of propeller units (4) comprises one to four propeller units (4). The monitoring system monitors the platform in real time, obtains the real-time motion level and mooring tension of the platform, and on the basis of offset and inclination requirements and mooring tension requirements of the platform in a real-time motion state, calculates the power required by the propeller units (4) for execution. A conventional mooring method is combined with a power positioning system to reduce the load on the mooring cables and reduce the maximum offset and the inclination angle of the platform foundation, benefiting both the efficiency and service life of dynamic cables and wind turbines.
Owner:SHANGHAI INVESTIGATION DESIGN & RES INST CO LTD

Intelligent new energy locomotive power distribution and energy recovery control system and method

The invention relates to the technical field of electric vehicle control, and provides an intelligent new energy locomotive power distribution and energy recovery control system and method. The system comprises a multi-source information sensing layer, an intelligent decision control layer and an execution feedback layer. The multi-source information sensing layer collects the state of a vehicle and external environment data. The intelligent decision control layer generates a power distribution and energy recovery instruction through data fusion and preprocessing, fuzzy logic assistance, reinforcement learning decision and cooperative work of a multi-objective optimization module; and the execution feedback layer executes the instruction, monitors feedback in real time, and optimizes related actions. According to the method, advanced technologies such as reinforcement learning and fuzzy logic are fused, complex and changeable driving scenes are accurately dealt with, self-adaptive optimization of power distribution and energy recovery strategies is achieved, the energy recovery efficiency is improved, power distribution is accurate and efficient, dynamic adjustment can be achieved according to driving intentions and working conditions, the driving safety and comfort are guaranteed, and meanwhile the driving efficiency is improved. And efficient utilization of energy is realized.
Owner:QINHUANGDAO TIANTUO ELECTRIC LOCOMOTIVE CO LTD

Testing secondary power system of aircraft powerplant

A method of operation is provided. During this method, a first power system of an aircraft powerplant is operated to provide a first quantity of power and / or torque to drive rotation of a propulsor rotor. A second power system of the aircraft powerplant is tested during the operating of the first power system. The second power system is configured as or otherwise includes an electric machine. The testing of the second power system includes: signaling the second power system to use the electric machine to provide a second quantity of power and / or torque to further drive the rotation of the propulsor rotor; determining an operational parameter of the aircraft powerplant following the signaling; and evaluating operability of the second power system by comparing the operational parameter to a threshold.
Owner:PRATT & WHITNEY CANADA CORP

Small-size rotor test bench, parameter matching method and control angle resolving method

The invention discloses a small-size rotor test bed, a parameter matching method and a control angle resolving method, belongs to the technical field of aviation aerodynamic wind tunnel tests, and aims to solve the problems of an existing small-size rotor test bed. The test bench comprises a main shaft tilting system, the main shaft tilting system comprises a base, a tilting electric cylinder, two rotating shaft seats, a tilting table and a tilt angle sensor, the two rotating shaft seats are arranged on the left side and the right side of the base respectively, shaft heads are arranged on the left side and the right side of the tilting table respectively, and the two coaxial shaft heads are in corresponding rotating fit with the two rotating shaft seats respectively. A rear cylinder cover of the tilting electric cylinder is hinged to the front side of the base, a piston rod of the tilting electric cylinder is arranged upwards and hinged to the front side of the tilting table, and a tilt angle sensor is arranged on the tilting table. The test rotor wing is connected with the power transmission system, the power transmission system is connected with the tilting table, and technical support can be provided for measurement of rotor wing performance, blade surface pressure and blade bending moment load of the small unmanned aerial vehicle.
Owner:CHINA AVIATION IND CORP HARBIN AERODYNAMICS RESEARCH INSTITUTE

Simulation and suppression method for fluid-structure interaction vibration of water-jet propeller

The invention provides a fluid-structure interaction vibration simulation and suppression method for a water-jet propeller, and belongs to the field of numerical simulation of computational fluid mechanics. The method comprises the following steps: establishing a finite element model of a water-jet propeller impeller-shafting coupling system; performing dry mode and wet mode comparative analysis on the finite element model by utilizing a finite element method, and verifying the effectiveness of the model; dividing finite element grids of a structural domain and a flow field domain; establishing a fluid-solid coupling model; on the basis of bidirectional fluid-solid coupling numerical calculation, the flow field speed and acting force are solved through CFD, the structure movement speed and displacement are updated, a flow field grid is further updated, flow numerical calculation continues to be conducted, and iteration is conducted till the simulation time ends; flow-induced vibration characteristics are analyzed through post-processing, and the vibration amplitude is restrained by adjusting the mass center position of the impeller airfoil. According to the method, the bidirectional fluid-solid coupling model of the impeller-shafting system of the water-jet propeller is constructed, structural deformation and transient flow field information are directly associated, and the hydrodynamic performance is improved.
Owner:RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN +1

Power generation control method and device for extended-range hybrid power loader

The invention provides a power generation control method and device for an extended-range hybrid power loader. According to the scheme, the current working mode of the range extending type hybrid power loader is determined according to the real-time operation parameters and the driving operation information; the current working mode of the range extender is determined according to the current working mode of the range-extended hybrid power loader and the charge state of the power battery, and the current required power generation power of the range extender is determined based on the current working mode of the range extender, the required power of the range-extended hybrid power loader and the charge state of the power battery; according to the current required power generation power of the range extender, a preset range extender output electric power curve and a preset engine fuel efficiency characteristic curve, the target rotating speed of a generator and the target torque of the engine are determined, and according to the current working mode of the range-extended hybrid power loader, the target rotating speed of the generator and the target torque of the engine; and controlling the operation states of the engine and the generator. According to the scheme, the problem of low energy efficiency of an extended-range hybrid power loader is solved.
Owner:WEICHAI POWER CO LTD

Strapping tool

A strapping tool is disclosed herein. In one or more embodiments, the strapping tool includes a motive power source; and a tensioning assembly operatively coupled to the motive power source, the tensioning assembly including a cam member and at least one tensioning foot member, the cam member operatively coupling the at least one tensioning foot member to the motive power source, and the at least one tensioning foot member of the tensioning assembly configured to apply tension to a piece of strapping while being driven in an oscillatory manner by the motive power source. Also, in one or more embodiments, the strapping tool includes a jaw lifting assembly, the jaw lifting assembly configured to raise the at least one sealing jaw member out of a strapping pass line of the strapping tool so that the piece of strapping is capable of being inserted into the strapping tool.
Owner:GOLDEN BEAR LLC

Large model optimization-based ship main and auxiliary power real-time switching method and system

The invention discloses a ship main power and auxiliary power real-time switching method and system based on large model optimization, and relates to the technical field of ship power system control, and the method comprises the steps: collecting the operation state data and environment parameters of a ship main power system and an auxiliary power system in real time through a multi-mode sensor array; and performing space-time alignment and noise suppression processing on the operation state data and the environment parameters, inputting the feature subset into a lightweight large model inference engine, generating a multi-target optimization decision set, executing a main and auxiliary power dynamic switching control sequence in a preset time window according to the multi-target optimization decision set, and outputting the main and auxiliary power dynamic switching control sequence. And generating a self-optimization log including a switching efficiency evaluation report and a model iteration suggestion based on the deviation degree of the switching feedback data and a preset performance index. According to the ship main and auxiliary power real-time switching method and system based on large model optimization, stable operation of a ship power system is guaranteed, and meanwhile the service life of equipment is prolonged.
Owner:CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719

Air-ground multi-mode cross-domain robot system with clutch structure and control method

The invention discloses an air-ground multi-mode cross-domain robot system with a clutch structure and a control method. The air-ground multi-mode cross-domain robot system comprises a machine body, wings, clutch assemblies and rotor assemblies. The aircraft body drives the connecting rod mechanism through the steering engine to control the bilateral wings to move. Rotor driving motors, wheels and transmission gear sets are integrated on the wings, and motor power can be distributed to wheel driving shafts and propeller shafts. The clutch assembly is connected with a motor and a propeller shaft through a ratchet wheel meshing mechanism, and power on-off control is achieved, in the ground running process, a clutch is separated to stop rotation of a propeller, power is fully output to wheels to serve as driving wheels, and in the flight mode, the clutch is meshed to synchronously drive rotors and the wheels. According to the system, bimodal power distribution is achieved through a single motor, a driving wheel motor does not need to be additionally arranged, the structural complexity is effectively reduced, the moving speed and controllability are remarkably improved through the ground mode propeller static design, the advantage of cross-domain operation is achieved, and the system is suitable for complex task scenes.
Owner:HUNAN UNIV

Driving module of reciprocating type shaver

The invention discloses a driving module of a reciprocating type shaver. The driving module comprises a base, a driving assembly and a driving assembly, the two ends of the deflection frame are fixed to the base through elastic pieces to form a frame structure. The output shaft is mounted above the deflection frame; the horizontal motor is arranged on the base; the cam is arranged on a motor power shaft, and grooves with parallel normal sections and equal width are formed in the surface of the cam; the lower end of the rocker arm is hinged to the base, a middle rocker arm shaft is assembled in the groove, and the upper end is in linkage with the deflection frame. Rotary motion is converted into high-frequency linear swing through precise cooperation of the cam and the rocker arm, the transmission efficiency is high, and noise is low; the integrated modular structure of the base and the motor enables the cam and the rocker arm to be matched more accurately and reliably; the double-output shaft symmetrically and reversely swings to realize dynamic balance vibration reduction; the compact horizontal layout saves space; the product has the economical efficiency of a common motor and the performance advantages of a linear motor, the comfort and reliability of a shaver product are improved, and meanwhile the cost is reduced.
Owner:ZHEJIANG JINDA MOTORS & ELECTRIC APPLIANCES

Five-rotor aircraft with incongruent rotor inclination angles

An undercarriage, a middle large rotor and a middle large motor are connected to the lower portion of a fuselage body and sequentially connected to the top of a middle small tower, and the right front portion, the left front portion, the left rear portion and the right rear portion of the fuselage body are correspondingly connected with a right front fuselage arm, a left front fuselage arm, a left rear fuselage arm, a right rear fuselage arm and a power assembly. The connecting line of the rotating centers of the rotors of the four power assemblies is square or rectangular, the rotating directions of the rotors of the power assemblies at the same opposite angles are the same, the rotating directions of the rotors of the power assemblies at different opposite angles are opposite, and the rotating faces of the two rotors opposite to the middle large rotor in rotating direction incline around the axes of the respective arms. The included angle between the rotating surfaces of the two rotors and the horizontal plane is an acute angle beta, the rotating surfaces of the two rotors with the same rotating direction as the middle large rotor incline around respective arm axes, the included angle between the rotating surfaces of the two rotors and the horizontal plane is an acute angle theta, beta is larger than theta, the reaction torque and the horizontal component torque of the rotors jointly drive the aircraft to steer, and the aircraft has the advantages of being long in endurance time, large in load and high in wind resistance. And a universal flight platform is formed.
Owner:江富余

Decoupling control method for motion coupling between track and propeller

The invention discloses a decoupling control method for motion coupling between a track and a propeller, relates to the technical field of robot control, and realizes accurate and intelligent regulation and control of motion of a sea-land amphibious robot by constructing a complete closed-loop strategy from sensing, recognition, prediction to control. And the motion stability of the robot in a complex mixed environment is obviously improved. According to the method, the undesirable coupling effect between the crawler belt and the propeller can be anticipated and quantified in a prospective mode, suppression is conducted actively through self-adaptive control, impact, vibration and attitude instability caused by power conflicts in land and water transition or rugged terrain are effectively avoided, and stability and safety of a robot platform and loads of the robot platform are guaranteed. The energy utilization efficiency of the robot is greatly improved. And it is ensured that the two power systems work in the optimal cooperative state at any moment, and invalid energy internal consumption and redundant output are avoided.
Owner:QINGDAO INST OF MARINE GEOLOGY

Hybrid aircraft power plant

The power plant can have a structure; an output shaft connectable to a load, the output shaft rotatable about an axis relative the structure; a thermal engine secured to the structure, the thermal engine having a thermal engine shaft; an electric motor having a stator and a rotor shaft, the stator secured to the structure; an epicyclic gearing having a sun gear coaxial to a ring gear, a plurality of planet gears meshed between the sun gear and the ring gear, and a carrier coaxial to the sun gear and to the ring gear, the sun gear, carrier, and ring gear being rotatable relative the casing structure, the output shaft and the rotor shaft both coupled to the carrier, and the thermal engine shaft coupled to sun gear and the carrier; and an overrunning clutch operable to prevent the rotation of the ring gear in one angular direction.
Owner:PRATT & WHITNEY CANADA CORP

Dynamic energy distribution method for new energy automobile based on regenerative braking

The invention provides a regenerative braking-based dynamic energy distribution method for a new energy automobile, which belongs to the technical field of braking systems and comprises the following steps: step 1, determining the total braking force currently required by the automobile, and further determining the distribution proportion of mechanical braking and regenerative braking; 2, evaluating the current acceptable charging power of the battery and the feedback power range of the motor, and further determining limit data of regenerative braking energy distribution; 3, the optimal regenerative braking force and mechanical braking force distribution proportion under the current working condition is determined; 4, the optimal regenerative braking force distribution proportion is converted into a regenerative braking force instruction, then a motor is controlled to generate corresponding regenerative braking torque based on the regenerative braking force instruction, the vehicle is braked, and energy is recycled; and 5, the mechanical braking force distribution proportion is converted into a mechanical braking force instruction, and then a mechanical braking device is controlled to generate corresponding braking force based on the mechanical braking force instruction. And more accurate brake control and energy management are realized.
Owner:SHANDONG YILU TRANSPORTATION TECH CO LTD

Spiral bevel gear system dynamics modeling method based on bidirectional fluid-solid coupling

The invention relates to a spiral bevel gear system dynamics modeling method based on bidirectional fluid-solid coupling, and belongs to the technical field of aviation transmission, and the method comprises the following steps: S1, calculating the radial deformation and deformation speed of an elastic ring through an analytical method; s2, solving a transient control equation of oil film pressure by taking the radial deformation and the deformation speed of the elastic ring calculated in the step S1 as input to obtain ERSFD internal and external oil film pressure distribution; obtaining a rigidity coefficient and a damping coefficient of the oil film through numerical integration; s3, establishing a kinetic model of the spiral bevel gear transmission system by adopting a lumped parameter method, and deducing a differential equation of the gear system; and S4, through the ERSFD oil film dynamic characteristics calculated in the S2, internal excitation and external excitation are comprehensively considered, an ERSFD-spiral bevel gear system coupling dynamic response result is obtained, the modeling method considers the influence of the elastic ring boss structure characteristics and the complex coupling relation oil film-elastic ring current-solid coupling effect, and the accuracy and calculation efficiency of the model are improved to the maximum extent.
Owner:CHONGQING UNIV +1

Starter over-rotation protection control method and system, electronic equipment and storage medium

The invention discloses a starter over-rotation protection control method and system, electronic equipment and a storage medium, and the method comprises the steps: firstly collecting a power turbine transmission chain tail end rotation speed signal and a gas generator rotation speed signal, and then judging whether the gas generator rotation speed reaches a first preset rotation speed or not; and if the rotating speed of the gas generator reaches a first preset rotating speed, the decreasing rate of the rotating speed at the tail end of the power turbine transmission chain is larger than a rotating speed decreasing rate threshold value, and the duration time exceeds preset time, or if the decreasing amplitude of the rotating speed at the tail end of the power turbine transmission chain exceeds a preset value, parking protection is started. If the rotating speed of the gas generator does not reach the first preset rotating speed all the time, it can be judged that the starter is not really ignited, the starter is in the test run test process of starting (oil) sealing, false starting, cold running and the like, at the moment, the power turbine does not have the over-rotating problem, and even if the decreasing rate or the decreasing amplitude of the rotating speed of the tail end of a power turbine transmission chain meets the preset conditions, the engine cannot be ignited. And the parking protection is not started, so that the normal test run test is not influenced.
Owner:CHINA HANGFA SOUTH IND CO LTD

Multi-motor driving system torque optimal distribution method and system

The invention relates to the technical field of electric driving system energy-saving control, and discloses a multi-motor driving system torque optimal distribution method and system, and the method comprises the steps: building a single power unit power loss model of a multi-motor driving system; constructing a fitting straight line segment; constructing a torque-current mapping relation curve; a train speed prediction model, a multi-motor driving system power unit motor rotating speed prediction model, a multi-motor driving system total torque reference value prediction model and a multi-motor driving system power unit power loss prediction model are constructed; establishing a multi-motor driving system energy efficiency evaluation function, a multi-motor driving system stability evaluation function, a multi-motor driving system total torque following evaluation function and a system optimization objective function; designing a learning rate of a control vector; and updating the control vector according to the learning rate, and obtaining an optimized torque distribution coefficient and an optimized torque reference value distributed by each power unit. Therefore, the torque optimization distribution of the multi-motor driving system is realized, and the energy utilization efficiency of the system is improved.
Owner:CHINA SHENHUA ENERGY CO LTD +1

Hydrodynamic transmission power chain optimization method and system

The invention relates to the technical field of torque converters, in particular to a hydrodynamic transmission power chain optimization method and system.The method comprises the steps that a hydrodynamic torque converter parameterized geometric model is built, and a pump impeller blade outflow angle, a guide wheel runner input / output angle, turbine blade geometric parameters and the relative position of a pump impeller and a turbine are set as design variables; based on CFD three-dimensional flow field simulation, a k-epsilon model is adopted for rapid analysis, an SST model is adopted for transient simulation, and simulation data under different variable combinations are obtained; training a BP neural network by using the simulation data, inputting each design variable, and constructing a multi-target optimization model with maximization of efficiency and minimization of noise as targets; a design variable combination is selected in the Pareto optimal solution set, a model is reconstructed, and an optimized hydraulic torque converter is obtained; according to the method, the problems that the design optimization efficiency of the hydraulic torque converter is low, the parameter adjusting period is long, and good compromise between the transmission efficiency and noise suppression is difficult to obtain can be solved.
Owner:SHANDONG OUJING ENG MASCH CO LTD

System for converting and transporting electrical energy for the internal hybridisation of an aircraft turbomachine

The present invention relates to a system for converting and transporting electrical energy in a turbomachine-propelled aircraft, said system including:at least a first rotary electric machine connected mechanically to the low-pressure shaft by means of a coupling device,a second rotary electric machine connected mechanically to the high-pressure shaft by means of an accessory gearbox, andsaid first electric power module and said second electric power module being connected electrically to an internal electrical network of the turbomachine,a generator coupled to the accessory gearbox and intended to supply an electrical network of the aircraft with electricity, anda control device for controlling start-up of the turbomachine by at least one rotary electric machine, for compensating for power consumed by the generator, and for implementing distribution between the power absorbed by the high-pressure shaft and the power absorbed by the low-pressure shaft.
Owner:SAFRAN SA +2

Multifunctional cycle power generation system and method by gravity lever

The invention provides a multifunctional cycle power generation system and method by a gravity lever. The system comprises a supporting rack and a balance weight arranged on the supporting rack and slidably matched with the supporting rack, wherein engines are arranged on one side or two sides of the balance weight; the input shaft of each engine is connected to a transmission shaft; two or more single-directional clutches are fixedly connected to the middle of the transmission shaft; the locking directions of the single-directional clutches are same, gears are fixed to the peripheries of thesingle-directional clutches, and a rack matched with each gear to drive the transmission shaft to rotate is arranged next to each single-directional clutch; at least one pair of racks is arranged on the upper part and the lower part, separately, the racks and the balance weight which reciprocates are in driving movement and the balance weight is arranged on the supporting rack to swing through a lifting mechanism in a reciprocating manner. As the balance weight which swings in the reciprocating manner pulls the racks to drive the transmission shaft to rotate in the single direction, multiple engines can be driven synchronously to generate electricity synchronously, and the power needed by a supporting rack lifting device is alleviated greatly by means of a swing mode like to a lever, so that the energy sources are saved and the power generation efficiency is improved greatly.
Owner:姚裕明

Double-closed-loop cooperative control method and power system for direct-driven electric chassis

The invention discloses a double-closed-loop cooperative control method of a direct-drive electric chassis and a power system, relates to the technical field of power control of electric special vehicles, and provides a rotating speed and torque double-closed-loop cooperative control architecture, and realizes double-core real-time cooperative operation and dynamic optimization of motor output characteristics through a 32-bit processor. A direct-drive transmission structure is combined, a traditional speed reduction device is omitted, a flat wire motor directly drives a rear axle through a transmission shaft, and a four-in-one controller is matched, so that the system loss is reduced by 33%, and the power density is improved by 15%; on the basis of real-time temperature / electric quantity data of a lithium iron phosphate battery management system, control parameters are adaptively adjusted, and the bottleneck of performance attenuation in a low-temperature environment of-35 DEG C is broken through; and a high-voltage interlocking and insulation monitoring module is integrated, and an emergency hydraulic system is automatically switched when an electrical fault occurs, so that multi-stage safety guarantee is formed. According to the technology, the energy recovery efficiency is remarkably improved by 20%, and the wind resistance stability and the extreme environment reliability are effectively enhanced.
Owner:WUXI XIMEI SPECIAL AUTOMOBILE CO LTD

Hilly and mountainous region hybrid power caterpillar tractor and control method

The invention discloses a hybrid crawler tractor for hills and mountains and a control method. The hybrid crawler tractor comprises a power system, a transmission system, an energy storage system, a driving system and a control system, the power system comprises an engine, a generator and a clutch; the transmission system comprises a mechanical coupling device, a gearbox, a power output shaft and the like; the energy storage system comprises a photovoltaic power generation panel and an energy storage device; the driving system comprises a driving system input shaft, left and right traction motors, left and right planet rows, driving wheels and the like; the control system comprises a whole vehicle controller, an energy storage device controller, a motor controller, an engine controller, a vehicle information sensor, a clutch control unit, a brake control unit and the like. According to the crawler tractor, a double-engine and motor mixed connection double-power flow structure is adopted, operation and running under various complex working conditions in hills and mountains are met, rich solar resources in the region are fully utilized, the advantages of a traditional crawler tractor and a new energy tractor are considered, and long-time operation in busy farming seasons is guaranteed.
Owner:NORTHWEST A & F UNIV

Locomotive power battery electric quantity hysteresis equalization control method

The invention relates to the field of locomotive power battery electric quantity control, and particularly discloses a locomotive power battery electric quantity hysteresis equalization control method, which comprises the following steps that: a traction force exerting mode is reset into an axle load transfer mode, and the initial value of an electric quantity equalization compensation coefficient K is a rack axle load transfer coefficient corresponding to zero speed; judging whether the current mode is a power battery power supply mode; if yes, the TCU receives the electric quantity of a front power battery and the electric quantity of a rear power battery in real time according to the current locomotive working mode, calculates the electric quantity average value difference value, monitors the auxiliary load power and the traction motor power and calculates the power difference value; entering a hysteresis control logic process; calculating a dynamic traction force compensation coefficient, ensuring that the traction force compensation amount is matched with the actual load characteristic of the system, correcting the traction characteristic curve in real time, and dynamically compensating the electric quantity difference of the battery; and performing traction distribution control according to the locomotive speed and outputting corresponding traction.
Owner:CRRC DALIAN R & D CO LTD

Dual-motor hybrid power transmission system for medium and large tractors

The invention discloses a dual-motor hybrid power transmission system for medium and large tractors. The dual-motor hybrid power transmission system comprises an engine, an intermediate shaft, a main motor, an auxiliary motor, a power coupling device, a variable-speed transmission mechanism and a PTO output shaft, the double input ends of the power coupling device are connected with the auxiliary motor and the main motor respectively, power of the main motor can be directly input into the power coupling device, and power of the auxiliary motor is input into the power coupling device through the intermediate shaft and the second clutch. Total power is output to a PTO output shaft through an intermediate shaft and output to a variable speed transmission mechanism through a second row of planetary wheels, rotating speed coupling of the engine and the double motors can be carried out through a power coupling device, different driving modes are achieved, the system is compact and efficient in structure, the efficient and cooperative stepless speed regulation characteristic of multiple power sources is fully utilized, and the power efficiency is improved. The gear requirement of the system is reduced, the space cost is optimized, the chassis specific power is remarkably improved, and the efficient transmission purpose is achieved; and under the high-load working condition, the engine is matched, and power output is balanced.
Owner:SOUTH CHINA AGRICULTURAL UNIVERSITY

Anti-interference linear motor module motion control method

The invention discloses an anti-interference linear motor module motion control method, and relates to the technical field of linear motor module control. The method comprises the following steps: monitoring and analyzing multiple parameters of displacement error # imgabs0 #, acceleration fluctuation value # imgabs1 #, motor load capacity # imgabs2 #, motor working current I, motor real-time voltage value U, dragging force # imgabs3 # and guide rail friction force # imgabs4 # in the operation process of a motor module in real time, and interference of external environmental factors (such as airflow velocity # imgabs5 #, airflow pressure # imgabs6 #, deposition thickness # imgabs7 # and electrostatic effect coefficient # imgabs8 #); according to the method, the motion state of the motor module can be comprehensively evaluated, so that the deviation of the motion track is effectively reduced, and the motion stability of the motor module is remarkably improved. An interference model is established by collecting external environment interference parameters (airflow interference, deposition thickness, environment vibration and the like) and combining a neural network technology, a motion control strategy of a motor module can be dynamically adjusted, and different types of interference factors are compensated in real time.
Owner:DIREC SEIKO (SHENZHEN) CO LTD

Hollow shaft motor and cleaning water circulating filtration scrubber using same

The invention discloses a hollow shaft motor and a cleaning water circulating filtration scrubber using the same, and belongs to the technical field of hollow shaft motors. Provided is a hollow shaft motor. A hollow shaft is driven by an output shaft of a motor body. A cover body is arranged outside; a first connecting part and a second connecting part are arranged at two ends of the hollow shaft; the first connecting part is of a mechanical fixed connecting structure; the second connecting part is of a split type connector structure comprising a static ring part, a movable ring part and a pressing device. According to the invention, the hollow shaft is externally arranged, and the hollow shaft and the hollow shaft are not coaxial, so that the motor cannot be damaged even if water leaks from the occlusion part of the hollow shaft, power loss is avoided, and maintenance is convenient; a split type connector structure is adopted, through the contact type sealing design of the static ring part and the movable ring part and the introduction of the pressing device, relative rotation between the hollow shaft and external connection can be achieved, the sealing requirement can be met, and water leakage is effectively avoided; in the cleaning water circulating filtration scrubber applying the motor, a connecting water pipe is effectively prevented from being wound.
Owner:CHANGCHUN JIEYIDA INTELLIGENT MFG CO LTD