CN205239629U - Compound a steering system of push -down - Google Patents
Compound a steering system of push -down Download PDFInfo
- Publication number
- CN205239629U CN205239629U CN201520943436.4U CN201520943436U CN205239629U CN 205239629 U CN205239629 U CN 205239629U CN 201520943436 U CN201520943436 U CN 201520943436U CN 205239629 U CN205239629 U CN 205239629U
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- steering
- power
- assisted
- control unit
- electronic control
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 13
- 241000826860 Trapezium Species 0.000 claims description 6
- 230000003134 recirculating effect Effects 0.000 claims description 6
- 239000002828 fuel tank Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 239000012224 working solution Substances 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 description 6
- 238000000205 computational method Methods 0.000 description 3
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- Power Steering Mechanism (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The utility model discloses a compound a steering system of push -down, this system contain electric power steering system and automatically controlled power -assisted steering system, adopt A, two helping hand motors of B, and compound a steering system can switch over between electronic power assisted steering mode, automatically controlled power -assisted steering mode and mixed power assisted steering mode according to different work condition, realizes power -assisted steering.
Description
Technical field
The utility model belongs to servo steering system technical field, especially refers to a kind of can realization according to different operating mode switch operating mouldsFormula function, and ensure the compound steering of push-down of good power-assisted steering road feel.
Background technology
At present, the servo steering system that existing automobile generally adopts has: hydraulic power-assist steering system, electric-controlled hydraulic power-assisted steeringSystem and electric boosting steering system. Wherein, hydraulic power-assist steering system, Electro-Hydraulic Power Steering System can be at automobile low speedLarger power-assisted is provided under operating mode, alleviates driver's burden while turning to; But under high-speed working condition, steering response is poor, control stabilityExisting problems. Electric boosting steering system is passed by controller, assist motor, reducing gear steering-wheel torque sensor and the speed of a motor vehicleThe compositions such as sensor, controller is accepted steering-wheel torque signal and the GES that sensor records and is processed, and controls motor rootAccording to pre-determined assist characteristic output power torque. But affected by the electrical characteristics such as the battery tension of automobile own, its outputMaximum power-assisted square is less, can not meet the demand of the vehicles such as motorbus.
Summary of the invention
Be directed to above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of push-down compound steering, withSolve hydraulic power-assist steering system in prior art, Electro-Hydraulic Power Steering System steering response under high-speed working condition is poor, behaviourThe problems such as handing stability is poor, and the less problem of maximum power-assisted square of electric boosting steering system output.
For achieving the above object, the compound steering of a kind of push-down of the present utility model, comprising: steering wheel, steering spindle, turnSquare sensor, electronic control unit, recirculating ball-type steering, pitman arm, electric power steering module, knuckle arm, electricityControl hydraulic power-assisted steering module, steering trapezium, wheel, described steering wheel connects the moment input of steering spindle, torque sensingDevice is placed between the moment output and recirculating ball-type steering input of steering spindle, and is connected with electronic control unit, momentExport wheel to through pitman arm, knuckle arm, steering trapezium; Wherein, described electric power steering module comprises: power-assistedMotor A, reducing gear, push rod; Described electric-controlled hydraulic power-assisted steering module comprises: assist motor B, power assistance pump for steering, oilCase, high-pressure oil pipe, control valve, rotary valve, servohydraulic cylinder, oil return oil pipe; Electronic control unit sends control to assist motor ASignal processed, power-assisted square passes to push rod, pitman arm after reducing gear slows down increasing square; Electronic control unit is to assist motor BTransmit control signal, drive power steering pump work, make fluid flow to control valve, rotary valve, servohydraulic cylinder via high-pressure oil pipe,The working solution of end loop is back to fuel tank via oil return oil pipe.
The beneficial effects of the utility model:
By the compound steering of push-down of the present utility model, in automobile assisted power steering system, realize multi-steering mode capabilities,Can turn to pattern to switch according to different operating modes, the perfection that realizes motor turning portability and steering response be merged, and can alsoThe economy of automobile assisted power steering is combined with flexibility, therefore there is wide market application foreground.
Brief description of the drawings
Fig. 1 illustrates the structure chart of the compound steering of the utility model push-down.
Fig. 2 illustrates the pattern switching controls flow chart of the compound steering of the utility model push-down.
Detailed description of the invention
For the ease of those skilled in the art's understanding, below in conjunction with embodiment and accompanying drawing, the utility model is further described,The content that embodiment is mentioned is not to restriction of the present utility model.
Shown in Fig. 1, Fig. 2, the compound steering of a kind of push-down of the present utility model, comprising: steering wheel 1, steering spindle2, torque sensor 3, electronic control unit 4, recirculating ball-type steering 5, pitman arm 6, electric power steering module, turnTo joint arm 10, electric-controlled hydraulic power-assisted steering module, steering trapezium 11, wheel 20, described steering wheel 1 connects steering spindle 2Moment input, torque sensor 3 is placed between the moment output and recirculating ball-type steering 5 inputs of steering spindle 2,And be connected with electronic control unit 4, moment exports wheel 20 to through pitman arm 6, knuckle arm 10, steering trapezium 11;Wherein, described electric power steering module comprises: assist motor A7, reducing gear 8, push rod 9; Described electric-controlled hydraulicPower-assisted steering module comprises: assist motor B12, power assistance pump for steering 13, fuel tank 14, high-pressure oil pipe 15, control valve 16, turnValve 17, servohydraulic cylinder 18, oil return oil pipe 19; Electronic control unit 4 by electric power steering control electric current e to power-assistedMotor A7 controls, and power-assisted square passes to push rod 9, pitman arm 6 after reducing gear 8 slows down increasing square; Electronic Control listUnit 4 controls assist motor B12 by electric-controlled hydraulic power-assisted steering control electric current f, drives power assistance pump for steering 13 to work,Make fluid flow to control valve 16, rotary valve 17, servohydraulic cylinder 18 via high-pressure oil pipe 15, the working solution of end loop is via returningOil oil pipe 19 is back to fuel tank 14.
The utility model carries out composite design and control to electric boosting steering system and Electro-Hydraulic Power Steering System, and realization turnsTo mode switch function, what angular signal b, the torque sensor that electronic control unit 4 obtains according to rotary angle transmitter obtained turnsSide-sway acceleration signal d and GES c that square signal a, side acceleration sensor obtain calculate handoff factor K,And itself and switching threshold are compared, and then realize the power-assisted steering pattern switching of adaptation condition.
Carry out the principle of pattern switching controls below for the compound steering of the utility model push-down:
The angular signal b that GES c, rotary angle transmitter are obtained, dtc signal a and the side direction that torque sensor obtains are acceleratedThe side-sway acceleration signal d that degree sensor obtains passes to electronic control unit 4; Electronic control unit 4 carries out above-mentioned signalComputing obtains pattern handoff factor K, and the computational methods of handoff factor K apply moment two parts group by car resistance square and driverBecome, car resistance square computational methods are:
Wherein, θ represents steering wheel angle, and v represents the speed of a motor vehicle, ayRepresent automobile side angle acceleration, b represents stub knuckle offset distance,β represents front-wheel kingpin inclination, and r represents tire radius, and R represents radius of turn, and γ represents front-wheel castor, η1RepresentativeSteering system positive drive efficiency, d represents steering wheel diameter, iωRepresent angle ratio of steering system, F1The fully loaded front axle load of representative;
Driver applies Calculating Torque during Rotary method: choose operating mode by certain gradient and test, driver under different operating modes is appliedMoment is carried out matching and obtains driver and apply the relation of moment and the speed of a motor vehicle, automobile side angle acceleration, the computational methods of handoff factor KFor:
K＝1.213θ+1.669V2-(0.165V+0.662ay+15.713)
Wherein, θ represents steering wheel angle, and V represents the speed of a motor vehicle, ayRepresent automobile side angle acceleration.
Wherein, will turn to pattern to be divided into following four kinds according to above-mentioned K value: if pattern handoff factor K is greater than switching threshold K1, tableShow that servo steering system need switch to electric power steering pattern, electronic control unit is to controlling motor A transmitted signal; If computingResult is greater than switching threshold K2 and is less than switching threshold K1, represent servo steering system need switch to electric-controlled hydraulic power-assisted steering withThe common mode of operation of electric power steering, ensures that assistant mode takes over seamlessly, and electronic control unit is to controlling motor A, controlling electricityMachine B transmitted signal; If pattern handoff factor K is less than switching threshold K2 and is greater than switching threshold K3, represent now required power-assistedSteering provides larger power-assisted, and servo steering system need switch to electric-controlled hydraulic power-assisted steering pattern, and electronic control unit is to controlMotor B transmitted signal processed; If pattern handoff factor K is less than switching threshold K3, represent that now required servo steering system provides largePower-assisted, servo steering system need switch to electric-controlled hydraulic power-assisted steering and the common mode of operation of electric power steering, Electronic Control listUnit is to controlling motor A, controlling motor B transmitted signal.
The concrete application approach of the utility model is a lot, and the above is only preferred embodiment of the present utility model, it should be pointed out thatFor those skilled in the art, not departing under the prerequisite of the utility model principle, can also make someImprove, these improve and also should be considered as protection domain of the present utility model.
Claims (1)
1. the compound steering of push-down, it is characterized in that, comprise: steering wheel, steering spindle, torque sensor, electronic control unit, recirculating ball-type steering, pitman arm, electric power steering module, knuckle arm, electric-controlled hydraulic power-assisted steering module, steering trapezium, wheel, described steering wheel connects the moment input of steering spindle, torque sensor is placed between the moment output and recirculating ball-type steering input of steering spindle, and be connected with electronic control unit, moment exports wheel to through pitman arm, knuckle arm, steering trapezium; Wherein, described electric power steering module comprises: assist motor A, reducing gear, push rod; Described electric-controlled hydraulic power-assisted steering module comprises: assist motor B, power assistance pump for steering, fuel tank, high-pressure oil pipe, control valve, rotary valve, servohydraulic cylinder, oil return oil pipe; Electronic control unit transmits control signal to assist motor A, and power-assisted square passes to push rod, pitman arm after reducing gear slows down increasing square; Electronic control unit transmits control signal to assist motor B, drives power steering pump work, makes fluid flow to control valve, rotary valve, servohydraulic cylinder via high-pressure oil pipe, and the working solution of end loop is back to fuel tank via oil return oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520943436.4U CN205239629U (en) | 2015-11-24 | 2015-11-24 | Compound a steering system of push -down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520943436.4U CN205239629U (en) | 2015-11-24 | 2015-11-24 | Compound a steering system of push -down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205239629U true CN205239629U (en) | 2016-05-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520943436.4U Expired - Fee Related CN205239629U (en) | 2015-11-24 | 2015-11-24 | Compound a steering system of push -down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205239629U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416392A (en) * | 2015-11-24 | 2016-03-23 | 南京航空航天大学 | Push rod type composite steering system and mode switching control method thereof |
-
2015
- 2015-11-24 CN CN201520943436.4U patent/CN205239629U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416392A (en) * | 2015-11-24 | 2016-03-23 | 南京航空航天大学 | Push rod type composite steering system and mode switching control method thereof |
| CN105416392B (en) * | 2015-11-24 | 2017-11-24 | 南京航空航天大学 | A kind of push-down composite turning system and its mode switch control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20171124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |