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44results about How to "Smooth torque output" patented technology
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Default phase fault tolerance driving system of open winding motor
InactiveCN103023411AReduce in quantityReduce volumeElectronic commutation motor controlVector control systemsPhase currentsCapacitance
The invention relates to a default phase fault tolerance driving system of an open winding motor. A head end and a tail end of a common three-phase motor winding are cascaded with two nominal electrical level inverters; after a fault happens in a one-phase winding open circuit, two switches on a fault phase upper bridge arm are online locked; two switching tubes of a lower bridge arm are normally driven by 1; and through the modulation of phase current reconstruction and effective redundancy switch vector reconstruction, a stable torque output is retained, the default phase fault tolerance operation of the driving system is realized and the requirements on the system continuous operation capability of the high-reliability application field such as electric automobiles are satisfied. Through the design of dual power supply, the danger of a common-mode voltage and a zero-sequence current to electric components and motors is eliminated. The device comprises a primary direct-current voltage source (1), a primary capacitor (2), a primary inverter (3), a secondary direct-current voltage source (4), a secondary capacitor (5), a secondary inverter (6), a three-phase motor (7) and a redundant switch vector (8); the primary inverter is connected to the head end of the three-phase motor winding and the secondary inverter is connected to the tail end of the motor winding.
Owner:SOUTHEAST UNIV
Default phase fault-tolerant control method of nine-phase flux-switching permanent magnetic motor
ActiveCN103973191ARealize no static difference adjustmentThe output speed does not changeElectronic commutation motor controlVector control systemsHarmonicElectric machine
The invention discloses a default phase fault-tolerant control method of a nine-phase flux-switching permanent magnetic motor. The default phase fault-tolerant control method includes that redundancy characteristics and harmonic current of a nine-phase system are utilized to compensate a fault-tolerant control strategy; when a motor winding or a driving system is in a default-phase failure caused by one-phase circuit breaking or circuit shorting, by online calculating third, fifth and seventh harmonic current momentary values under copper loss minimum boundary conditions in real time and performing closed-loop decoupling control on the harmonic current, the motor can be smoothly transited from a nine-phase normal state to an eight-phase fault state and maintain both output rotating speed and rotating torque to be unchanged, undisturbed running of the driving system is realized, and requirements, of high-reliability application fields like track traffic and electromobiles, on system continuous running capability are met; during designing of the nine-phase flux-switching permanent motor, electromagnetic torque pulsation rate is lowered while high torque density of the special motor is retained.
Owner:SOUTHEAST UNIV
Multi-air-gap axial magnetic flow-magnetic field modulation permanent magnet motor
InactiveCN105406669ASmooth torque outputImprove power factorDynamo-electric machinesPermanent magnet rotorPower factor
The invention discloses a multi-air-gap axial magnetic flow-magnetic field modulation permanent magnet motor, which comprises a plurality of stators and a plurality of rotors, wherein the stators and the rotors are sequentially in staggered arrangement in the axial direction; the two ends of the permanent magnet motor are two surface-mounted permanent magnet rotors; the other rotors are embedded permanent magnet rotors; the structure dimensions of the plurality of stators are identical; the stators are subjected to two-edge grooving and use annular windings; and each stator sequentially deviates for the mechanical angle of the half groove distance relative to the former stator in the circumference direction. The multi-air-gap axial magnetic flow-magnetic field modulation permanent magnet motor realized according to the invention can comprehensively solve the inherent problems of magnetic field modulation motor torque density limitation and low power factor on the basis of remaining good performance of a magnetic field modulation motor.
Owner:HUAZHONG UNIV OF SCI & TECH
Car anti-shake method and system, and a motor controller
InactiveCN106183888ASmooth torque outputFix jitterSpeed controllerElectric energy managementControl variableNegative feedback
The invention discloses a car anti-shake method and system, and a motor controller. The torque command compensation amount corresponding to the motor rotation speed is used as a negative feedback signal to be introduced into a torque control loop, so that compensation of an original torque demand value is avoided; and the torque command compensation amount and the original torque demand value are used as torque controlled variables together, so that the purpose of smooth torque output is achieved, and the problem that a car shakes due to incomplete attachment of an assembly transmission part during acceleration of the car is solved.
Owner:SHENZHEN BYD DAIMLER NEW TECH CO LTD
Method for suppressing voltage fluctuation and flicker caused by wind power
InactiveCN103780174ASuppresses fluctuations in output voltageReduce and suppress output voltage fluctuationsElectronic commutation motor controlVector control systemsElectricityActive disturbance rejection control
The invention discloses a method for suppressing voltage fluctuation and flicker caused by wind power. According to the method, the active disturbance rejection control technology is introduced into torque control of a wind generator, a torque sharp-wave signal is grouped into unknown disturbance, and rotor current fluctuation is suppressed through nonlinear state error feedback in the case of unknown disturbance so as to keep output torque stable and suppress fluctuation and flicker of voltage of the wind generator. The method overcomes the limitation of voltage fluctuation and flicker governance by a power grid, and fluctuation and flicker of output voltage of a wind turbine are suppressed before wind power is grid-connected, which is conducive to improvement of the dynamic performance of the wind turbine and the quality of power supply.
Owner:北京科诺伟业科技股份有限公司 +1
Method and device for controlling torque change rate of permanent magnet synchronous motor
ActiveCN103532466ASafe torque change rateImprove torque response speedElectronic commutation motor controlAC motor controlMaximum torquePermanent magnet synchronous generator
The invention discloses a method for controlling the torque change rate of a permanent magnet synchronous motor. The method comprises the following steps of a detecting step: detecting the three-phase current and rotary speed of an armature of the motor during operation in real time; a converting step: converting the detected armature three-phase current into a motor alternating-direct axle current based on Clark-Park conversion and calculating a corresponding alternating-direct axle voltage; a torque adjusting step: calculating a modulation factor Mindex based on the alternating-direct current and voltage obtained in the conversion step and adjusting the outputted torques at different torque change rates in a sectional mode according to the range of the modulation factor Mindex value. According to the method and device for controlling the torque change rate of the permanent magnet synchronous motor, a relatively faster torque responding speed is adopted during the control of the maximum torque current ratio, and a relatively smoother torque responding speed is adopted during flux weakening control. The motor is stable in torque outputting, strong in antijamming capacity and fast in accelerated speed and the system is high in brake efficiency. Current impact of the system during high speed can be effectively prevented and the motor in flux weakening control is prevented from being out of control.
Owner:CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
Harmonic cancellation PWM generation method
ActiveCN106130435ASuppress harmonic currentSmooth torque outputAC motor controlElectric motor controlTime delaysSecondary stage
The invention discloses a harmonic cancellation PWM generation method, and the method comprises the steps: dividing the modulation frequency into three parts in a variable frequency speed regulation range: first and second low-frequency operation stages and a middle-high frequency operation stage; respectively an SVPWM asynchronous modulation mode and an SVPWM synchronous modulation mode, which are fixed through employing carrier frequency, at the first and second low-frequency operation stages; carrying out the frequency point control of the above two modulation modes when the synchronous carrier frequency and the set asynchronous carrier frequency are consistent; enabling the second low-frequency operation stage to be carried out at a plurality of different synchronization multiples; employing a mode of dividing each cyclic wave into a plurality of executed harmonic waves equally to eliminate an SHEPWM mode at the middle-high frequency operation stage; reading a current angle before switching, and calculating the time delay when operating to 90 degrees or 270 degrees so as to achieve the switching between the synchronous modulation mode and a harmonic cancellation mode. The method is easier to implement a specific harmonic cancellation algorithm, and increases the response speed and precision.
Owner:SHENZHEN INVT TRANSPORTATION TECH CO LTD
Shock-absorption buffer shaft and application
InactiveCN104653647AExtended service lifeReduce frequencyYielding couplingGas turbine plantsEngineeringMechanical engineering
Owner:金余和
Induction motor rotor and a method of manufacturing the same
ActiveUS20170163135A1Smooth torque outputIncreased rotor resistanceWindings insulation shape/form/constructionMagnetic circuit rotating partsInduction motorElectrical connection
A method of manufacturing an induction motor rotor assembly, the method includes the steps of: providing a rotor; machining a plurality of re-entrant slots axially along an outer surface of the rotor; positioning a sleeve concentrically over the outer surface of the rotor; applying a friction stir welding process to the sleeve along each re-entrant slot axially along the outer surface of the rotor to cause the sleeve material to plasticise and flow into the axial re-entrant slot to form an axial re-entrant slot bar; and providing an electrical connection at each of the opposing axial ends of the rotor between respective ones of opposing ends of each of the axial re-entrant slot bars to thereby form the induction motor rotor.
Owner:ROLLS ROYCE PLC
A multi-air-gap axial flux-magnetic field modulated permanent magnet motor
InactiveCN105406669BSmooth torque outputImprove power factorDynamo-electric machinesPermanent magnet rotorPower factor
The invention discloses a multi-air-gap axial magnetic flow-magnetic field modulation permanent magnet motor, which comprises a plurality of stators and a plurality of rotors, wherein the stators and the rotors are sequentially in staggered arrangement in the axial direction; the two ends of the permanent magnet motor are two surface-mounted permanent magnet rotors; the other rotors are embedded permanent magnet rotors; the structure dimensions of the plurality of stators are identical; the stators are subjected to two-edge grooving and use annular windings; and each stator sequentially deviates for the mechanical angle of the half groove distance relative to the former stator in the circumference direction. The multi-air-gap axial magnetic flow-magnetic field modulation permanent magnet motor realized according to the invention can comprehensively solve the inherent problems of magnetic field modulation motor torque density limitation and low power factor on the basis of remaining good performance of a magnetic field modulation motor.
Owner:HUAZHONG UNIV OF SCI & TECH
Torque control method and system and vehicle
ActiveCN107487327ASmooth torque outputImprove driving experienceSpeed controllerElectric energy managementControl systemMotor system
The invention discloses a torque control method and system and a vehicle. The torque control method comprises the steps that a crawling torque value is obtained when the vehicle withdraws from the crawling state; and after the vehicle withdraws from the crawling state, a first driving torque value is obtained according to the crawling torque value and the opening degree of an accelerator pedal, so that a motor is controlled to operate through the first driving torque value. The driving torque value is larger than the crawling torque value. The torque control method and system and the vehicle have the following advantages that when the vehicle withdraws from crawling, no sudden change happens on the output torque of a motor system, no impact is generated in a transmission system, prolonging of the service life of the transmission system is facilitated, and the driving and riding comfort is improved at the same time.
Owner:BORGWARD AUTOMOTIVE CHINA CO LTD
Field weakening control method of asynchronous motor based on bandgap variable step size method
ActiveCN104135203AGuaranteed control effectAvoid the effects of controlElectronic commutation motor controlVector control systemsVoltage vectorThree-phase
The invention discloses a field weakening control method of an asynchronous motor based on a bandgap variable step size method. The method comprises the steps of obtaining particular value coefficients P1 and P2 according to a specific application condition and a test condition to determine particular values Umax and Umin of a three-phase voltage resultant vector us of the asynchronous motor, then determining bandgap width as shown in the specification, determining initial step size as shown in the specification, determining restraint coefficients a1, a2, b1 and b2 according to a practical application condition and the test condition, determining a variable step size coefficient beta and a direction coefficient alpha according to direct current busbar voltage and control voltage vectors, determining a set value of exciting current of the asynchronous motor, and finally resetting an exciting current component according to an equation as shown in the specification. The method avoids an influence of parameters of the motor on control, and is simple in algorithm and quick in field weakening response; the algorithm achieves smooth transition within a full-speed range of the asynchronous motor; and a field weakening control requirement of the asynchronous motor is met.
Owner:中国东方电气集团有限公司
Gear transmission stepless speed changer
PendingCN111677821ASmooth torque outputNo impactControlled membersToothed gearingsGear driveGear wheel
The invention discloses a gear transmission stepless speed changer. In a power transmission mechanism, please refer to the drawing 4 of the specification, power drives totally three power transmissionsynchronous gears which are arranged on the two sides of and between an input cone roller spiral strip-shaped gear and an output cone roller spiral strip-shaped gear and can move back and forth on three synchronous spline shafts for transmission through rotation of the input cone roller spiral strip-shaped gear, accordingly, the output cone roller spiral strip-shaped gear is driven to rotate, andthen a deceleration gear is used for driving a differential mechanism left half shaft and a right half shaft to output power torque. In a speed changing mechanism, please refer to the drawing 4 of the specification, rotation speed adjustment is achieved in the manner that a speed adjusting servo motor is utilized for driving a synchronous speed adjusting bevel gear to rotate, then, a synchronousspeed adjusting lead screw is driven to rotate, a synchronous speed adjusting shifting fork matched with the synchronous speed adjusting lead screw is driven to move back and forth in the axial direction of the synchronous speed adjusting lead screw, finally, the power transmission synchronous gears are driven to move back and forth on the three synchronous spline shafts at different meshing diameter positions between the input cone roller spiral strip-shaped gear and the output cone roller spiral strip-shaped gear, and accordingly different output rotation speeds are obtained.
Owner:徐宇
Engine intake control method of hybrid power vehicle
PendingCN110332053ASmooth torque outputImprove comfortElectrical controlInternal combustion piston enginesDriver/operatorControl parameters
The invention discloses an engine intake control method of a hybrid power vehicle. A hybrid power control unit receives a pedal signal input by a driver and outputs a target torque value of an engineto an intake control module; the intake control module compares the target torque value and the size of a control strategy switch threshold, and sets control parameters of a throttle valve and a bypass valve; and a torque estimation module acquires an operating state parameter of the engine, calculates an estimation torque value, and feeds back to the hybrid power control unit and the intake control module. Through the engine intake control method provided by the invention, the engine can quickly respond and meets the requirement on a torque following performance of the hybrid power control unit, in addition, in the transient process, the engine intake amount fluctuation is small, and the torque output is stable.
Owner:TONGJI UNIV
Smoothing control for working mode switching and torque of hydrostatic transmission double-motor vehicle
ActiveCN102343811ASolve the problem of inaccurate torque estimationImprove practicalityGas pressure propulsion mountingPlural diverse prime-mover propulsion mountingHydraulic motorHydraulic pump
The invention relates to a smoothing control for working mode switching and torque of a hydrostatic transmission double-motor vehicle and belongs to a control method for a switching process of a hybrid power vehicle. Distinguishing for a working mode of a vehicle is realized by detecting a vehicle speed and a pedal signal; a hydraulic pump motor and a hydraulic motor are reasonably selected to coordinate and work, thereby promoting the transmission efficiency and pavement adaptability of a serial hybrid power vehicle; and during a process of working mode switching, a method for using an on-line calculating working element to output a torque and dynamically adjust an output torque of a to-be-inserted element is adopted to smoothen the output torque of the whole vehicle, thereby avoiding the phenomena of interrupted driving torque and oversize driving torque during the working mode switching, promoting driving performance and riding comfortableness of the vehicle, and efficiently lowering the cost. The control method has the advantages that the driving performance and riding comfortableness of the vehicle are promoted, the cost is efficiently lowered, a mechanical power distributingdevice is conveniently arranged, and the torque of a hybrid power engine can be accurately calculated.
Owner:JIANGSU XCMG CONSTR MASCH RES INST LTD
Field Weakening Control Method for Asynchronous Motor Based on Bandgap Variable Step Size Method
ActiveCN104135203BGuaranteed control effectAvoid the effects of controlElectronic commutation motor controlVector control systemsVoltage vectorBusbar
The invention discloses a field weakening control method of an asynchronous motor based on a bandgap variable step size method. The method comprises the steps of obtaining particular value coefficients P1 and P2 according to a specific application condition and a test condition to determine particular values Umax and Umin of a three-phase voltage resultant vector us of the asynchronous motor, then determining bandgap width as shown in the specification, determining initial step size as shown in the specification, determining restraint coefficients a1, a2, b1 and b2 according to a practical application condition and the test condition, determining a variable step size coefficient beta and a direction coefficient alpha according to direct current busbar voltage and control voltage vectors, determining a set value of exciting current of the asynchronous motor, and finally resetting an exciting current component according to an equation as shown in the specification. The method avoids an influence of parameters of the motor on control, and is simple in algorithm and quick in field weakening response; the algorithm achieves smooth transition within a full-speed range of the asynchronous motor; and a field weakening control requirement of the asynchronous motor is met.
Owner:中国东方电气集团有限公司
Flexibly engaged continuously variable transmission gearbox
InactiveUS10006525B2Simple structureSolve the large outputGearingGearing controlSprocketControl theory
A flexibly engaged continuously variable transmission gearbox includes the following components connected sequentially in a transmission: a power input shaft conical roller, a sectional input flexible sprocket, a tooth-shaped chain, a sectional output flexible sprocket, a power output shaft conical roller. When the power input shaft conical roller rotates, it drives five sectional input flexible sprocket members that are slidably matched in five equidistant T-shaped grooves on the conical roller to rotate. The sectional input flexible sprocket drives the tooth-shaped chain engaged therewith to transmit, and thus drives the five sectional output flexible sprocket members that are slidably matched in the five equidistant T-shaped grooves on the output shaft conical roller to rotate. The five sectional output flexible sprocket members are connected to the output shaft conical roller through the five equidistant slidable T-shaped grooves.
Owner:XU YU
Double-disc type motor electric stepless speed change mechanical-electrical integration system
PendingCN111376698AAxial dimension shortCompact structureGas pressure propulsion mountingMagnetic circuit stationary partsElectric machineDrive motor
The invention relates to a double-disc type motor electric stepless speed change mechanical-electrical integration system. The system comprises a shell, a planet wheel, a sun wheel, an input shaft, aplanet carrier, a gear ring carrier, a gear ring, an output shaft, a hollow shaft, an ISG motor stator, an ISG motor stator, an ISG motor rotor, a main drive motor stator, a main drive motor rotor anda main drive motor stator; the ISG motor stator and the ISG motor rotor form an ISG disc type motor; the main drive motor stator and the main drive motor rotor form a main drive motor with a double-stator structure; the output shaft penetrates through the hollow shaft; supporting bearings are arranged between the front end and the rear end of the hollow shaft and the output shaft; the sun wheel,the planet wheel and the gear ring form a planet row; the ISG motor stator and the main drive motor stator are connected together and are connected with the hollow shaft through the support bearings;an ISG motor stator side shell is connected with the hollow shaft through the supporting bearing; a main drive motor stator side shell is connected with the output shaft through the supporting bearing. The system of the invention has the advantages of compact structure, high power density, high system efficiency and outstanding NVH characteristics.
Owner:南京清研海易新能源动力有限责任公司
Engine air inlet system with continuously variable air inlet resistance, engine air inlet adjusting method and engine
InactiveCN106438133AIncrease intake resistanceWide range of changesEngine controllersMachines/enginesResistance forceAerospace engineering
The invention discloses an engine air inlet system with continuously variable air inlet resistance, an engine air inlet adjusting method and an engine. The system comprises a fixed air outlet pipe and a moving air outlet pipe capable of moving relative to the fixed air outlet pipe; the fixed air outlet pipe is fixed on an air inlet component of the engine; the moving air outlet pipe is mounted in the air inlet component; and an operating mechanism is arranged on the moving air outlet pipe and can control the moving air outlet pipe to move, so that the moving air outlet pipe makes contact with and is connected with the fixed air outlet pipe and is gradually separated from the fixed air outlet pipe. With the engine air inlet system with the continuously variable air inlet resistance, the engine air inlet adjusting method and the engine, smooth torque output is realized, the air inlet resistance has the relatively large change range and is fast in response relative to the displacement of the moving air outlet pipe, the action distance is short, and the requirement for arrangement space is not high.
Owner:JIANGMEN DACHANGJIANG GROUP CO LTD
System and control method for setting torque request based on mobile terminal
PendingCN112455239AImprove applicabilityAdd varietySpeed controllerElectric vehicle charging technologyEnergy recoveryWireless
The invention discloses a system and a control method for setting a torque request based on a mobile terminal . A vehicle torque request mode and / or forced kinetic energy recovery mode data is set atthe mobile handheld terminal; the mobile handheld terminal transmits the set vehicle torque request mode and / or forced kinetic energy recovery mode data to a cloud server through wireless communication; the cloud server transmits the data to a vehicle-mounted intelligent control module; a vehicle control unit receives the data of the vehicle-mounted intelligent control module and sends the data toa motor controller; and the motor controller controls the motor to output torque according to set data. According to the invention, different torque modes are set on the handheld mobile terminal, sothat a driver can obtain the driving force output mode with the optimal driving feeling through simple adjustment, and better driving experience can be brought to the driver. Meanwhile, the manual setting supported by the mobile terminal provides convenience for the driver to operate in different scenes, so that the driver can use the vehicle more leisurely.
Owner:DONGFENG HONDA AUTOMOBILE CO LTD
Torque ripple suppression control system and method for flux switching motor
ActiveCN111431450AReduce torque rippleReduce speed fluctuationElectronic commutation motor controlAC motor controlElectric machineControl system
The invention discloses a torque ripple suppression control system and method for a magnetic flux switching motor which is used to control the magnetic flux switching motor. The control method comprises the steps of measuring the rotor position angle theta m of the flux switching motor, and obtaining the rotating speed omega r; according to the rotating speed omega r and a given target rotating speed omega ref, calculating to obtain a component consistent with the cogging torque frequency in the given value observation rotating speed omega r of the q-axis current, obtaining an interference value, and according to the given value interference value of the q-axis current and the actual values of the d-axis current and the q-axis current, calculating to obtain the voltage vector values ucd and ucq; converting the voltage vector values ucd and ucq from dq-alpha beta coordinates to the voltage vectors ucalpha and ucbeta under an alpha-beta coordinate system; and obtaining a three-phase PWMsignal based on the voltage vectors ucalpha and ucbeta, generating a three-phase voltage value according to the three-phase PWM signal, and driving the flux switching motor to operate. According to the technical scheme, only the frequency information of the positioning torque needs to be known, the amplitude phase does not need to be known, and when the amplitude of the positioning torque changes,the compensation value can be corrected in time, and the control effect is guaranteed.
Owner:SOUTHEAST UNIV
Torque control optimization method of electric vehicle based on driving mode
PendingCN113910920AAppropriate demandSmooth torque outputSpeed controllerElectric energy managementDriver/operatorElectric cars
The invention discloses a torque control optimization method of an electric vehicle based on a driving mode, which is characterized in that the driving mode is firstly defined, and the method specifically comprises the following steps: 101, disassembling common driving working conditions including ejection starting, crawling, accelerator stepping acceleration, accelerator loosening sliding, brake stepping deceleration, cruise acceleration and deceleration and driving mode switching in each working condition; 102, splitting functions of the torque chain according to working conditions; 103, under different driving modes, involving the different driving modes in each torque chain link of torque chain function splitting, and optimizing torque control logic; and 104, calibrating and optimizing the parameters in all the control. According to the method, factors of influence of a driving mode on the torque chain are fully considered, and an integral framework intervening in the torque chain is designed; a sufficient conversion mechanism is achieved for the torque characteristics of the electric vehicle, the requirements of different drivers are met, and meanwhile, torque output is smoother and the driving feeling is better in combination with the driving working condition during different modes and mode switching.
Owner:轻橙时代(深圳)科技有限责任公司
Motor rotor and a brushless motor applying the same
InactiveCN108808914AReduce torque fluctuationSmooth torque outputMagnetic circuit rotating partsBrushless motorsEngineering
The invention relates to a motor rotor and a brushless motor applying the same. The motor rotor comprises a rotor core and a plurality of permanent magnets, wherein an axial mounting hole for fixedlymounting the rotor core to a motor rotating shaft is formed in the center of the rotor core, and the plurality of permanent magnets are embedded in the rotor core at intervals in the circumferential direction of the rotor core; each permanent magnet is provided with a radial inner side surface and a radial outer side surface, the radial inner side surface is a plane, and the radial outer side surface is an arc surface; the radial thickness of each permanent magnet gradually decreases from the circumferential center to two circumferential ends. Torque fluctuation of the motor can be reduced, and the motor rotor core is easy to assemble, saves materials and has low cost.
Owner:GUANGDONG JINBA INTELLIGENT TECHNOLOGY CO LTD
Automobile motor torque limiting method and device, vehicle controller and system
ActiveCN110789361ASmooth torque outputSmall fluctuationSpeed controllerElectric energy managementMotor speedAutomotive battery
The invention relates to an automobile motor torque limiting method and device, a vehicle controller and a system. The method comprises the following steps that when an automobile battery allowable power is less than a preset power threshold, and when a speed change rate of an automobile motor is greater than zero, a motor torque limiting value is obtained according to a predicted motor speed andthe automobile battery allowable power; the predicted motor speed is the sum of a predicted speed increment and an automobile motor speed at the current moment; the predicted speed increment is the product of the speed change rate of the automobile motor and a predicted time; and the torque output of the automobile motor is limited on the basis of the motor torque limiting value. According to theautomobile motor torque limiting method and device, the vehicle controller and the system, the sudden change of the torque limiting value of the motor can be smoothed, the fluctuation of the torque output of the motor is reduced, and the smoothness of driving is improved.
Owner:GAC AION NEW ENERGY AUTOMOBILE CO LTD
Direct-drive type disc spring energy storage and return type linear-motion quick shut-off performing mechanism
InactiveCN111425645AAvoid casualtiesAvoid property damageWindingsOperating means/releasing devices for valvesElectric machinePower switching
The invention discloses a direct-drive type disc spring energy storage and return type linear-motion quick shut-off performing mechanism. The direct-drive type disc spring energy storage and return type linear-motion quick shut-off performing mechanism comprises a power mechanism, a power switching mechanism, a transmission system and an energy storage and return mechanism, wherein the power mechanism drives the transmission system to realize motion output; the power mechanism comprises an electric drive system and a manual operation system; the power switching mechanism is used for realizingswitching between the electric drive system and the manual operation system; and the energy storage and return mechanism is used for performing shut-on and shut-off on an electric performing mechanismwhile the electric drive system is shut off. An alternating-current servo motor drives a nut to rotate under a shut-on condition, so that a lead screw moves up and down; and under a sudden power-losing condition, the motor and an electromagnetic brake are shut off, the lead screw nut is in a free moving station, a disc spring energy storage mechanism releases elastic potential energy to push thelead screw to move upwards, so that quick shut-off is realized.
Owner:CHINA PETROLEUM & CHEM CORP +2
Integrated PCB winding disc type motor system
ActiveCN112134429AImprove performanceAdjustable upper and lower air gapAssociation with control/drive circuitsWindings conductor shape/form/constructionPull forceElectric machine
The invention discloses an integrated PCB winding disc type motor system. According to the integrated PCB winding disc type motor system, the upper rotor disc, the lower rotor disc and the stator discform a double-side permanent magnet disc type motor structure, single-side magnetic pull force can be overcome, magnetic flux leakage is reduced, permanent magnet materials are fully utilized, the motor performance is improved, the cost is reduced, the size is reduced, the axial size is short, and the structure is compact; and the system is suitable for occasions with strict requirements on placement space. According to the disc type motor system, the stator and the rotor are arranged in a peer-to-peer mode, heat dissipation is good, and high power density can be obtained. In addition, the adjustable mechanism additionally arranged on the rotating shaft can realize the adjustability of the upper and lower air gaps of the motor, and can facilitate the expansion and adjustment of the numberof layers of the integrated PCB winding structure, so that the performance of the motor is optimal.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Motor control method and device, motor and power tool
ActiveCN113381665BGuaranteed uptimeReduce noiseTorque ripple controlAC motor controlElectric machineSteering control
The present disclosure relates to a motor control method and device, a motor and a power tool. The method includes: acquiring a Kth input rotor angle and a first output rotor angle corresponding to the K-1th input rotor angle, where K≥1 and is Integer; obtain the angle difference according to the Kth input rotor angle and the first output rotor angle; adjust the angle difference to obtain the angle increment; obtain the Kth input rotor according to the angle increment The second output rotor angle corresponding to the angle; and the magnetic field steering control of the motor is performed according to the second output rotor angle. The embodiment of the present disclosure can obtain a smoother angle output, reduce the noise when the motor is running, and obtain a more stable torque output, so that the motor runs stably and has high efficiency.
Owner:SHANGHAI SINOMCU MICROELECTRONICS
Disc motor
InactiveCN103178628AHigh strengthSmooth torque outputMagnetic circuit rotating partsWindings conductor shape/form/constructionEngineeringElectrical and Electronics engineering
The invention relates to a disc motor which is provided with an armature and symmetrically mounted magnetic steel assembly components. The armature is mounted between the symmetrically mounted magnetic steel assembly components and composed of more than two groups of stacked coil windings. Each of the magnetic steel assembly components is composed of a magnetic steel mounting disc and sectorial magnetic steels surrounding into a coil, a motor magnetic steel disc with a motor mounting shaft hole opened is arranged at the center of the magnetic steel mounting disc, and the magnetic steel mounting discs and the motor magnetic steel disc are in integrated structures. The coil windings are formed of six coils surrounded into winding coils, and the more than two groups of stacked coil windings are overlapped vertically. According to the disc motor, the small mounting size of the motor can be maintained, the motor power is effectively improved, and accordingly, a high-power small-size motor is obtained, and the application range is wide.
Owner:常州市吉士电器有限公司
Smoothing control for working mode switching and torque of hydrostatic transmission double-motor vehicle
ActiveCN102343811BSolve the problem of inaccurate torque estimationImprove practicalityElectric energy vehiclesControl devicesHydraulic motorWork pattern
The invention relates to a smoothing control for working mode switching and torque of a hydrostatic transmission double-motor vehicle and belongs to a control method for a switching process of a hybrid power vehicle. Distinguishing for a working mode of a vehicle is realized by detecting a vehicle speed and a pedal signal; a hydraulic pump motor and a hydraulic motor are reasonably selected to coordinate and work, thereby promoting the transmission efficiency and pavement adaptability of a serial hybrid power vehicle; and during a process of working mode switching, a method for using an on-line calculating working element to output a torque and dynamically adjust an output torque of a to-be-inserted element is adopted to smoothen the output torque of the whole vehicle, thereby avoiding the phenomena of interrupted driving torque and oversize driving torque during the working mode switching, promoting driving performance and riding comfortableness of the vehicle, and efficiently lowering the cost. The control method has the advantages that the driving performance and riding comfortableness of the vehicle are promoted, the cost is efficiently lowered, a mechanical power distributing device is conveniently arranged, and the torque of a hybrid power engine can be accurately calculated.
Owner:JIANGSU XCMG CONSTR MASCH RES INST LTD
Starting control method and system for isg type hybrid electric vehicle
ActiveCN104176049BShorten start timeReduce vibrationHybrid vehiclesElectric motor startersHybrid typeStart time
The invention discloses a starting control method and system of an ISG type hybrid hybrid vehicle. The starting control method of the integrated starter and generator in the method is as follows: starting the integrated starter and generator and making the torque of the integrated starter and generator within the starting time The first part of the starting period increases linearly with a large rate of change, and the latter part of the starting period increases linearly with a small rate of change; the engine starting control method includes: from the initial moment of starting, control the fuel injector of the engine to be in the state of stopping fuel injection, and control the clutch to be in the state of Combine the state, and start recording the starting time of the engine; obtain the engine speed in real time; judge whether the current speed of the engine is greater than or equal to the engine idle speed; if so, judge whether the starting time of the engine is less than or equal to the time interval corresponding to the starting time period; if If yes, the clutch is controlled to be disconnected; after a delay time, it is judged whether the current rotational speed of the engine is greater than or equal to the starting rotational speed of the engine; if so, the injector is controlled to inject oil.
Owner:CHANGSHA CRRC INTELLIGENT CONTROL & NEW ENERGY TECH CO LTD
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