CN108644373A - A kind of harvest machinery Double-working-condition multi-parameter shifting system and method - Google Patents

A kind of harvest machinery Double-working-condition multi-parameter shifting system and method Download PDF

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Publication number
CN108644373A
CN108644373A CN201810800343.4A CN201810800343A CN108644373A CN 108644373 A CN108644373 A CN 108644373A CN 201810800343 A CN201810800343 A CN 201810800343A CN 108644373 A CN108644373 A CN 108644373A
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parameter
harvest machinery
gear
working
working condition
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Inventor
张义政
杨玉娥
张金凯
孔令建
刘庆军
高祥
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University of Jinan
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University of Jinan
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
    • F16H59/56—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the main clutch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H2061/0459—Smoothing ratio shift using map for shift parameters, e.g. shift time, slip or pressure gradient, for performing controlled shift transition and adapting shift parameters by learning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2306/00—Shifting
    • F16H2306/40—Shifting activities

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The invention discloses a kind of harvest machinery Double-working-condition multi-parameter shifting system and process for gear, are related to agricultural mechanical field.A kind of harvest machinery Double-working-condition multi-parameter shifting system includes mainly working condition recognition system and shift parameter detecting system, and the shift parameter detecting system includes that walking operating mode is shifted gears parameter detecting system and working condition shift parameter detecting system again.A kind of harvest machinery Double-working-condition multi-parameter process for gear includes mainly walking operating mode process for gear and working condition process for gear, specifically, walking operating mode process for gear is using speed parameter, accelerator open degree parameter, gradient coefficient parameter and coefficient of rolling resistance parameter as shift control parameters；Working condition is using speed parameter, accelerator open degree parameter, gradient coefficient parameter and coefficient of rolling resistance parameter, mass parameter, power partition coefficient parameter as shift control parameters.The present invention separately designs shifting system for two kinds of main operating modes of harvest machinery, and formulates process for gear, meets the dynamic property and cost-effectiveness requirement of harvest machinery under each operating mode.

Description

A kind of harvest machinery Double-working-condition multi-parameter shifting system and method
Technical field
The present invention relates to farm machinery control field more particularly to a kind of harvest machinery Double-working-condition multi-parameter shifting system and Method.
Background technology
Present harvest machinery field, Full-automatic electric-controlled shift theory is not also very ripe, mainly due to harvest machinery There are larger differences for working environment and conventional vehicles, and conventional two parameter or three parameter schedules are mainly for passenger vehicle or quotient With Car design, the calculating process of best shifting points has ignored some factors pair mostly using normal road running environment as background The influence of shifting points, still, these factors are often important for the harvest machinery of operating environment complexity, therefore these During the theoretical self shifter in harvest machinery of ripe shift on conventional vehicles be it is not applicable, cannot be to harvest machinery Moving situation carry out accurate description, calculate the best shifting points of suitable harvest machinery.
On the other hand, there is also larger differences for the operating condition of conventional vehicles and harvest machinery, and conventional vehicles are mostly in either simplex It works under conditions of condition, still, harvest machinery but has the apparent operating mode of two species diversity, both operating modes are transition operating mode respectively And working condition, those schedules for being directed to single operating condition design are obviously not applicable for harvest machinery, in order to ensure to receive The dynamic property and cost-effectiveness requirement for obtaining machinery, need to formulate different shift control methods respectively for two kinds of operating modes.
Invention content
The present invention is directed to the real work feature of harvest machinery, it is proposed that a kind of Double-working-condition multi-parameter of suitable harvest machinery Shifting system and process for gear, separately design shifting system for two kinds of main operating modes of harvest machinery, and formulate shift side Method meets harvest machinery and shifts gears under any operating mode requirement.
The it is proposed of a kind of harvest machinery Double-working-condition multi-parameter shifting system proposed by the present invention, the system is established to receiving On the basis of the theory analysis for obtaining machine driven system, analysis is found, harvest machinery there are two kinds of operating modes, operating mode of respectively walking and Working condition, there are significant differences in power transmission path for two kinds of operating modes.
When harvest machinery is in walking operating mode, Traction clutch engagement, power clutch separation, the work(that engine is sent out Rate is all transmitted to drive axle through gearbox by Traction clutch and is used for driving wheel, generates the drive of driving harvest machinery walking Power.
When harvest machinery is in working condition, Traction clutch engagement, power clutch separation, the work(that engine is sent out Rate is split two-way, and a-road-through crosses Traction clutch and is transmitted to drive axle through gearbox and is used for driving wheel, generates driving harvest The driving force of machine-walking；Gear-box is flowed through by power clutch all the way, the ceding of Taiwan, stripping are transmitted to by band, chain and sprocket driving device Skin machine, chopper, driving equipment carry out harvest operation.
A kind of harvest machinery Double-working-condition multi-parameter shifting system includes mainly working condition recognition system and shift parameter detecting system System, the shift parameter detecting system include walking operating mode shift parameter detecting system and working condition shift parameter detecting system again System.
Further, the working condition system identifies power clutch by the proximity sensor in power clutch Residing working condition, when harvest machinery starts, the proximity sensor is started to work, and monitors the power clutch in real time Working condition, if the proximity sensor does not have signal output, the power clutch is in discrete state, to receivable Obtain machine-walking operating mode；If the proximity sensor has signal output, the power clutch is in meshing state, to receivable Obtain mechanical work operating mode.
Further, the walking duty parameter detecting system is mainly by control unit, signal intermediate treatment unit, speed Sensor unit, obliquity sensor unit, road conditions sensor unit, accelerator pedal position sensor unit composition.
Further, the working condition parameter detecting system is mainly by control unit；Signal intermediate treatment unit, speed Sensor unit, obliquity sensor unit, road conditions sensor unit, accelerator pedal position sensor unit, pressure sensor list Member, Traction clutch torque sensor unit, Traction clutch speed sensor unit, power clutch torque sensor list Member, power clutch speed sensor unit composition.
Further, described control unit is vehicle-mounted ECU, plays reception, processing sensor signal, and feedback control signal Control the effect of executing agency.
Further, the signal intermediate treatment unit is the devices such as analog-digital converter, signal amplifier, is played to sensing Device Signal Pretreatment acts on.
Further, the vehicle speed sensor unit is vehicle speed sensor and its attachment in driving axle housing, inspection Automobile speed is surveyed, and signal is transmitted to the speed input port of control unit through intermediate treatment unit.
Further, the accelerator pedal position sensor is the accelerator pedal position sensor in gas pedal And its attachment, detection throttle trample the depth, and signal is transmitted to the accelerator open degree input of control unit through intermediate treatment unit Port.
Further, the road obliquity sensor unit be obliquity sensor on harvest machinery vehicle frame and its Attachment detects road grade, and signal is transmitted to the road grade input port of control unit through intermediate treatment unit.
Further, the road conditions sensor unit is the road conditions sensor and its attachment mounted on bottom of frame, identification Road type, and signal is transmitted to the road conditions input port of control unit through intermediate treatment unit.
Further, the pressure sensor unit is mounted on the pressure sensor and its attachment of fruit-ear box bottom, detection Fruit-ear box quality, and signal is transmitted to the fruit ear mass input port of control unit through intermediate treatment unit.
Further, the Traction clutch torque sensor unit and Traction clutch speed sensor unit are installation Torque and speed probe on Traction clutch input shaft and its attachment detect the torque of Traction clutch input shaft and turn Fast signal, and signal is transmitted separately to Traction clutch torque input port and the walking of control unit through intermediate treatment unit Clutch rotational speed input port.
Further, the power clutch torque sensor unit and power clutch speed sensor unit are installation Torque and speed probe on power clutch input shaft and its attachment detect the torque of power clutch input shaft and turn Fast signal, and signal is transmitted separately to the power clutch torque input port and power of control unit through intermediate treatment unit Clutch rotational speed input port.
A kind of harvest machinery Double-working-condition multi-parameter process for gear includes mainly that walking operating mode process for gear and working condition change Gear method.
Further, the walking operating mode process for gear is with speed parameter, accelerator open degree parameter, gradient coefficient parameter and rolling Dynamic resistance figure parameters are shift control parameters.
Further, the working condition is with speed parameter, accelerator open degree parameter, gradient coefficient parameter and rolling resistance system Number parameter, mass parameter, power partition coefficient parameter are shift control parameters.
Further, the circular of the harvest machinery Double-working-condition multi-parameter process for gear includes harvest machinery hair The computational methods of motivation complete characteristic curve computational methods and harvest machinery best power performance shifting points.
Further, the harvesting mechanical engine complete characteristic curve computational methods are function superposition method, and calculating process is logical The realization of programming engine complete characteristic curve computational methods subprogram is crossed, circular is as follows：
In formula：M e （n e, α）For engine output torque,M em For the torque capacity of engine,Me 0 Turn for normal engine operation point Square,bFor slope of a curve correction factor,αFor accelerator open degree,n e For engine speed,n em Rotating speed is corresponded to for torque capacity,n e0 For Rated speed,n emax （α）For engine and accelerator open degreeαCorresponding engine maximum no-load speed.
Further, the engine omnicharacteristic subprogram needs to input engine test bench characteristic curve data, andM em Hair The torque capacity data of motivation,n em Torque capacity corresponds to rotary speed data,M e0 Normal engine operation point torque data,n e0 It is specified Rotary speed data, the subprogram are fitted the unknown quantity in engine complete characteristic curve mathematical model according to above-mentioned databGradient correction Coefficient, at this point, the engine complete characteristic curve mathematical model be withn e Engine speed andαAccelerator open degree is the letter of independent variable Number, then controlsαAccelerator open degree calculates engine speed-torque curve under all accelerator open degrees from 0 ~ 100% variation, That is engine complete characteristic curve.
Further, the following institute of the specific derivation process of the computational methods of the harvest machinery best power performance shifting points Show, specific implementation process is by writing best power performance shift point routine.
Further, the harvest machinery best power performance shifting points are the friendship of the adjacent two gears accelerating curve of harvest machinery Point derives mechanical model, lists the acceleration of a certain gear of harvest machinery by studying the mechanical characteristics of the harvest machinery direction of motion Spend math equation, you can solve to harvest machinery best power performance shifting points.
Further, the harvest machinery direction of motion mechanical characteristics show as harvest machinery direction of motion driving force and row Sailing resistance, there are equilibrium relations.
Further, the driving force is the force of periphery of the part torque to ground that engine branches to driving wheel；Institute Running resistance is stated mainly including grade resistance, rolling resistance and the acceleration resistance in harvest machinery travel direction.
Further, the driving force by engine throttle opening and engine speed and power distribution parameter these three Main shift control parameters influence, and there are following functional relations：
In formula：F t For driving force,M e （n e, α）For engine output torque,i g For variator drive ratio,i 0 For final driver ratio,rFor driving wheel radius,η T For the mechanical efficiency of power train,μFor Traction clutch power partition coefficient.
Further, the grade resistance is influenced by gradient coefficient parameter and quality shift control parameters, and is existed as follows Functional relation：
In formula：GFor the gravity of harvest machinery,iFor road grade coefficient.
Further, the rolling resistance is influenced by road conditions parameter and quality shift control parameters, and there is such as minor function Relationship：
In formula：GFor the gravity of harvest machinery,fFor coefficient of rolling resistance.
Further, the acceleration resistance is influenced by quality shift control parameters, and there are following functional relations：
In formula：F j For acceleration resistance,δFor correction coefficient of rotating mass,mFor harvest machinery quality,aFor harvest machinery acceleration.
Further, above-mentioned driving force and the mathematical model of running resistance are integrated, it can be deduced that a certain gear of harvest machinery Under acceleration equation：
In formula：Each meaning of parameters is with reference to above-mentioned various.
Further, the acceleration equation of adjacent two gear of the harvest machinery is listed respectivelya n Witha n+1 , and according to best dynamic The Computing Principle of power shifting points utilizes Analytic Method best power performance shifting points equation as follows：
In formula：nIt isnThe Train Parameters of gear,n+1It isn+1The Train Parameters of gear.
Further, the best power performance shift point routine needs to input harvest machinery parameter, includingrDriving wheel half Diameter,i g Each gear transmission ratio,i 0 Main reducing gear pass when than,η T Transmission efficiency,mHarvest machinery empty mass,δRotating mass converts The parameters such as coefficient, the subprogram calculate the harvest machinery of current shift and adjacent next gear by calling acceleration equation Acceleration can obtain harvest machinery best power performance shift under the present situation by solving adjacent two gears acceleration equation Point.
Description of the drawings
Fig. 1 is power transmission path figure；
Fig. 2 is working condition recognition system figure；
Fig. 3 is walking duty parameter detecting system figure；
Fig. 4 is working condition parameter detecting system figure；
Fig. 5 is walking operating mode shifting points control parameter figure；
Fig. 6 is working condition shifting points control parameter figure；
Fig. 7 is engine complete characteristic curve subprogram figure；
Fig. 8 is best power performance shift point routine figure；
Fig. 9 is the upshift implementation Process figure of adjacent two gear.
Specific implementation mode
The present embodiment is for the shifting system of proposed harvest machinery Double-working-condition multi-parameter and specific group of process for gear At and operation principle carried out detailed elaboration.
A kind of harvest machinery Double-working-condition multi-parameter shifting system proposed by the present invention, solves harvest machinery in two kinds of differences The problems of self shifter under operating mode, described two operating modes are respectively transition operating mode and working condition, in power transmission There are significant differences on path, specific as shown in Figure 1.
When harvest machinery is in walking operating mode, the engagement of 2 Traction clutches, the separation of 6 power clutch, what engine was sent out Power, which all flows through 3 gearboxes by 2 Traction clutches and flows to 4 drive axles, acts on 5 driving wheels, generates driving harvest machinery row The driving force walked.
When harvest machinery is in working condition, the engagement of 2 Traction clutches, the separation of 6 power clutch, what engine was sent out Power is split two-way, flows through 3 gearboxes by 2 Traction clutches all the way and flows to 4 drive axles and acts on 5 driving wheels, generates drive The driving force of dynamic harvest machinery walking；Gear-box is flowed through by 6 power clutch all the way, and is flowed to by 8 bands, chain and sprocket driving device 9 cedings of Taiwan, 10 peeling machines, 11 choppers, driving equipment carry out harvest operation.
A kind of shifting system of harvest machinery Double-working-condition multi-parameter includes working condition recognition system, the working condition recognition system Specific embodiment is as shown in Figure 2.
The working condition system is identified by 12 proximity sensors in 6 power clutch residing for 6 power clutch Working condition, when harvest machinery starts, 12 proximity sensor is reached the standard grade, and monitors the work of 6 power clutch in real time Make state, if 12 proximity sensor does not have signal output, 6 power clutch is in discrete state, to receivable Obtain machine-walking operating mode；If 12 proximity sensor has signal output, 6 power clutch is in meshing state, right Mechanical work operating mode should be harvested.
A kind of shifting system of harvest machinery Double-working-condition multi-parameter includes shift parameter detecting system, and the shift parameter is examined The concrete composition of examining system is as described in Fig. 3 ~ 4.
The shift parameter detecting system includes under the walking industry control parameter detecting system and working condition walked under operating mode Working condition parameter detecting system.
The walking duty parameter detecting system is as shown in figure 3, mainly by 13 control units, 14 signal intermediate treatment lists Member, 15 vehicle speed sensor units, 16 obliquity sensor units, 17 road conditions sensor units, 18 accelerator pedal position sensor lists This six big basic unit composition of member.
The working condition parameter detecting system is as shown in figure 3, mainly by 13 control units, 14 signal intermediate treatment lists Member, 15 vehicle speed sensor units, 16 obliquity sensor units, 17 road conditions sensor units, 18 accelerator pedal position sensor lists Member, 19 pressure sensor units, 20 Traction clutch torque sensor units, 21 Traction clutch speed sensor units, 22 Power clutch torque sensor unit, this 11 big basic unit composition of 23 power clutch speed sensor units.
Further, 13 control unit is vehicle-mounted ECU, plays reception, processing sensor signal, and feedback control is believed Number control executing agency effect.
Further, the 14 signal intermediate treatment unit is the devices such as analog-digital converter, signal amplifier, is played to passing Sensor signal Effect of Pretreatment.
Further, the 15 vehicle speed sensor unit is the vehicle speed sensor and its attachment in driving axle housing, Automobile speed is detected, and signal is transmitted to the speed input port of control unit through intermediate treatment unit.
Further, 16 accelerator pedal position sensor is the accelerator pedal position sensing in gas pedal Device and its attachment, detection throttle tramples the depth, and the accelerator open degree that signal is transmitted to control unit through intermediate treatment unit is defeated Inbound port.
Further, the 17 road obliquity sensor unit be obliquity sensor on harvest machinery vehicle frame and Its attachment detects road grade, and signal is transmitted to the road grade input port of control unit through intermediate treatment unit.
Further, the 18 road conditions sensor unit is the road conditions sensor and its attachment mounted on bottom of frame, is known Other road type, and signal is transmitted to the road conditions input port of control unit through intermediate treatment unit.
Further, 19 pressure sensor unit is mounted on the pressure sensor and its attachment of fruit-ear box bottom, inspection Fruit-ear box quality is surveyed, and signal is transmitted to the fruit ear mass input port of control unit through intermediate treatment unit.
Further, the 20 Traction clutch torque sensor unit and 21 Traction clutch speed sensor units are Torque and speed probe on Traction clutch input shaft and its attachment detect the torque of Traction clutch input shaft And tach signal, and by signal through intermediate treatment unit be transmitted separately to control unit Traction clutch torque input port and Traction clutch rotating speed input port.
Further, the 22 power clutch torque sensor unit and 23 power clutch speed sensor units are Torque and speed probe on power clutch input shaft and its attachment detect the torque of power clutch input shaft And tach signal, and by signal through intermediate treatment unit be transmitted separately to control unit power clutch torque input port and Power clutch rotating speed input port.
A kind of harvest machinery Double-working-condition multi-parameter process for gear, main includes that walking operating mode process for gear and working condition change Gear method, there are significant differences for the best shifting points control parameter that two kinds of process for gear are selected, specifically as shown in Fig. 5 ~ 6.
As shown in figure 5, walking operating mode process for gear uses speed parameter, accelerator open degree parameter, gradient coefficient parameter and rolling Four big parameter of dynamic resistance figure parameters is the shift control parameters that the best shifting points of walking operating mode calculate.
As described in Figure 6, working condition process for gear uses speed parameter, accelerator open degree parameter, gradient coefficient parameter and rolling Dynamic resistance figure parameters, mass parameter, six big parameter of power partition coefficient parameter are changing for the best shifting points calculating of working condition Keep off control parameter.
A kind of process for gear of harvest machinery Double-working-condition multi-parameter includes harvesting mechanical engine complete characteristic curve calculating side Method, the engine complete characteristic curve computational methods are function superposition method, and specific implementation subprogram is engine complete characteristic curve Subprogram, as shown in fig. 7, specific function is as follows：
In formula：M e （n e, α）For engine output torque,M em For the torque capacity of engine,M e0 Turn for normal engine operation point Square,bFor slope of a curve correction factor,αFor accelerator open degree,n e For engine speed,n em Rotating speed is corresponded to for torque capacity,n e0 For Rated speed；n emax （α）For engine and accelerator open degreeαCorresponding engine maximum no-load speed.
The engine omnicharacteristic subprogram needs to input engine test bench characteristic curve data, andM em The maximum of engine Torque data,n em Torque capacity corresponds to rotary speed data,M e0 Normal engine operation point torque data,n e0 For rated speed data, The subprogram is fitted the unknown quantity in engine complete characteristic curve mathematical model according to above-mentioned databGradient correction coefficient, at this point, The engine complete characteristic curve mathematical model be withn e Engine speed andαAccelerator open degree is the function of independent variable, is then controlled SystemαAccelerator open degree calculates engine speed-torque curve under all accelerator open degrees, i.e. engine is complete from 0 ~ 100% variation Characteristic curve.
A kind of process for gear of harvest machinery Double-working-condition multi-parameter includes the calculating of harvest machinery best power performance shifting points Method, specific derivation process is as follows, and specific implementation subprogram is best power performance shift point routine, as shown in Figure 8.
The harvest machinery best power performance shifting points are the intersection point of the adjacent two gears accelerating curve of harvest machinery, by grinding Study carefully the mechanical characteristics of the harvest machinery direction of motion, derives mechanical model, list the acceleration mathematics side of a certain gear of harvest machinery Journey, you can harvest machinery best power performance shifting points are solved.
The harvest machinery direction of motion mechanical characteristics show as harvest machinery direction of motion driving force and running resistance is deposited In equilibrium relation.
Further, the driving force is the force of periphery of the part torque to ground that engine branches to driving wheel；Institute Running resistance is stated mainly including grade resistance, rolling resistance and the acceleration resistance in harvest machinery travel direction.
Further, the driving force by engine throttle opening and engine speed and power distribution parameter these three Main shift control parameters influence, and there are following functional relations：
In formula：F t For driving force,M e （n e, α）For engine output torque,i g For variator drive ratio,i 0 For final driver ratio,rFor driving wheel radius,η T For the mechanical efficiency of power train,μFor Traction clutch power partition coefficient.
Further, the grade resistance is influenced by gradient coefficient parameter and quality shift control parameters, and is existed as follows Functional relation：
In formula：GFor the gravity of harvest machinery,iFor road grade coefficient.
Further, the rolling resistance is influenced by road conditions parameter and quality shift control parameters, and there is such as minor function Relationship：
In formula：GFor the gravity of harvest machinery,fFor coefficient of rolling resistance.
Further, the acceleration resistance is influenced by quality shift control parameters, and there are following functional relations：
In formula：F j For acceleration resistance,δFor correction coefficient of rotating mass,mFor harvest machinery quality,aFor harvest machinery acceleration.
Further, above-mentioned driving force and the mathematical model of running resistance are integrated, it can be deduced that a certain gear of harvest machinery Under acceleration equation：
In formula：Each meaning of parameters is with reference to above-mentioned various.
Further, the acceleration equation of adjacent two gear of the harvest machinery is listed respectivelya n Witha n+1 , and according to best dynamic The Computing Principle of power shifting points utilizes Analytic Method best power performance shifting points equation as follows：
In formula：nIt isnThe Train Parameters of gear；n+1It isn+1The Train Parameters of gear.
The best power performance shift point routine needs to input harvest machinery parameter, includingrDriving wheel radius,i g Each gear Position transmission ratio,i 0 Main reducing gear pass when than,η T Transmission efficiency,mHarvest machinery empty mass,δThe ginsengs such as rotating mass conversion coefficient Number, the subprogram calculate the acceleration of the harvest machinery of current shift and adjacent next gear, lead to by calling acceleration equation Cross solve it is adjacent two gear acceleration equation can obtain harvest machinery best power performance shifting points under the preceding situation.
In the specific implementation process of a kind of shift of harvest machinery Double-working-condition multi-parameter and process for gear, with the liter of adjacent two gear Itd is proposed harvest machinery Double-working-condition multi-parameter shifting system and process for gear, specific implementation process are described in detail for gear process As shown in Figure 9.
The upshift process of adjacent two gear needs to input engine whole vehicle and data, and the vehicle data are best power source Property shift the required data of point routine, the engine data be the required data of engine complete characteristic curve, then, Engine complete characteristic curve subprogram is called to carry out digital simulation to engine complete characteristic curve, then, in power clutch Operating mode residing for harvest machinery is identified in proximity sensor, and the sensor that control system controls under the operating mode is reached the standard grade, and is acquired Shift parameter under the operating mode then calls best power performance shift subprogram to calculate best power performance shifting points, first First judge the best power performance shifting points whether accelerator open degree for 100% when be calculated, if so, exporting under the gear Max. speed, and shift gears under the speed；If not then judge whether the shifting points keep off a car fast intersection section positioned at adjacent two, if It is then to shift gears in the case where harvest machinery reaches the speed, if it is not, then continuing to increase accelerator open degree, repeats deterministic process, until oil Door aperture reaches 100%.
Specific implementation process described in above-described embodiment is the specific implementation process of the best power performance upshift of harvest machinery, The inverse process of the specific real process and the embodiment of best power performance downshift point, used shifting system and process for gear with System and method described in embodiment are identical, do not do additional repeat herein.
The foregoing description of the disclosed embodiments enables those skilled in the art to realize or using invention.To these A variety of modifications of embodiment are it will be apparent that the general principles defined herein for those skilled in the art It can in other embodiments be realized without deviating from the spirit or scope of the invention.Therefore, the present invention will not be limited It is formed on the embodiments shown herein, and is to fit to most wide model consistent with the principles and novel features disclosed in this article It encloses.

Claims (7)

1. a kind of harvest machinery Double-working-condition shifting system, which includes mainly working condition recognition system and shift parameter detecting system System, the shift parameter detecting system include walking operating mode shift parameter detecting system and working condition shift parameter detecting system again System.
2. a kind of harvest machinery Double-working-condition multi-parameter process for gear is suitable for various self-propelled combine tools, includes mainly Walking operating mode process for gear and working condition process for gear.
3. according to claim 1, the working condition recognition system by proximity sensor to the working condition of power clutch It is detected, establishes power clutch separation, harvest machinery is in walking operating mode；Power clutch engages, and harvest machinery is in The correspondence of working condition.
4. according to claims 1, the walking operating mode shift parameter detection device includes mainly control unit, in signal Between processing unit, vehicle speed sensor unit, obliquity sensor unit, road conditions sensor unit, accelerator pedal position sensor list Member.
5. according to claims 1, the working condition parameter detection device includes mainly control unit, signal middle Manage unit, vehicle speed sensor unit, obliquity sensor unit, road conditions sensor unit, accelerator pedal position sensor unit, pressure Force sensor units, Traction clutch torque sensor unit, Traction clutch speed sensor unit, power clutch torque Sensor unit, power clutch speed sensor unit.
6. according to claims 2, the walking operating mode process for gear is with speed parameter, accelerator open degree parameter, gradient system Number parameter and coefficient of rolling resistance parameter are shift control parameters.
7. according to claims 2, the working condition with speed parameter, accelerator open degree parameter, gradient coefficient parameter and Coefficient of rolling resistance parameter, mass parameter, power partition coefficient parameter are shift control parameters.
CN201810800343.4A 2018-07-20 2018-07-20 A kind of harvest machinery Double-working-condition multi-parameter shifting system and method Pending CN108644373A (en)

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Application publication date: 20181012