CN202574209U - Power switch fuzzy control system for super-mild hybrid electric vehicle - Google Patents
Power switch fuzzy control system for super-mild hybrid electric vehicle Download PDFInfo
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- CN202574209U CN202574209U CN2012200568603U CN201220056860U CN202574209U CN 202574209 U CN202574209 U CN 202574209U CN 2012200568603 U CN2012200568603 U CN 2012200568603U CN 201220056860 U CN201220056860 U CN 201220056860U CN 202574209 U CN202574209 U CN 202574209U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a power switch fuzzy control system for a super-mild hybrid electric vehicle. The power switch fuzzy control system comprises a power system, an accelerator pedal position sensor, a vehicle speed sensor, an engine controller, a motor controller, a storage battery monitoring module, a fuzzy controller and a power switch control module, wherein the power system comprises an engine and a motor; the engine and the motor are connected to a metal belt type continuously variable transmission through a power coupler; the storage battery monitoring module is connected with a storage battery pack; the storage battery monitoring module, the accelerator pedal position sensor and the vehicle speed sensor are connected with the fuzzy controller; and the engine controller, the motor controller and the vehicle speed sensor are connected with the power switch control module. According to the fuzzy control system, vehicle speeds generated when the engine and the motor are switched can be determined by the fuzzy controller according to received accelerator pedal aperture signals and storage battery state-of-charge (SOC) signals.
Description
Technical field
The utility model relates to a kind of powershift control system, particularly a kind of powershift Fuzzy control system that is applicable to the super light mixed power electronlmobil
Background technology
Because the battery technology problem is difficult to break through, mixed power electric car plays a transition role in the pure electric automobile evolution at traditional fuel-engined vehicle, and the control of the powershift of driving engine and electrical motor is also more single now.Now the powershift control system of hybrid vehicle is generally the Threshold Control Method system, is the exact value of fixing because Threshold Control Method uses, so the power demand of chaufeur can not obtain satisfying preferably.
The Threshold Control Method system is provided with the threshold value that a certain speed of a motor vehicle is powershift control.When automobile driving speed reached the speed of a motor vehicle of Threshold Control Method default, control motor and driving engine switched.
The Threshold Control Method system of hybrid-power bus generally only sets the threshold value speed of a motor vehicle of a driving engine and motor switching.Use direct motor drive during starting, when bus gave it the gun the threshold value speed of a motor vehicle that reaches setting, propulsion source switched to engine drive by electrical motor, and when Reduced Speed Now reached the threshold value speed of a motor vehicle of setting, propulsion source switched to direct motor drive by driving engine.Because only set a threshold value speed of a motor vehicle; And the purpose of use hybrid-power bus is in order to improve the economy of bus; The threshold value speed of a motor vehicle that under the prerequisite of considering economy, is provided with is generally higher, and the bus driver will feel that car runs under power.
It is two driving engines of target and the threshold value speed of a motor vehicle that motor switches that the Threshold Control Method system of mixed power electric car then can be provided with respectively with dynamic property and economy.The Threshold Control Method system that applied powershift control system just is to use on the super light mixed power automobile now, this threshold value system has the threshold value speed of a motor vehicle of two powershifts.Vehicle starting confirms with the dynamic property to be that target still is to be target with the economy by direct motor drive according to the aperture of Das Gaspedal, confirms the threshold value speed of a motor vehicle that driving engine and motor switch according to controlled target.When car acceleration went the threshold value speed of a motor vehicle that reaches setting, propulsion source switched to engine drive by electrical motor, and when Reduced Speed Now reached the threshold value speed of a motor vehicle of setting, propulsion source switched to direct motor drive by driving engine.The vehicle start stage; Because have only two power conversion controlling points of economy and dynamic property, chaufeur is wanted to start to walk quicker the time, and for example the Das Gaspedal aperture can satisfy the demand of chaufeur to dynamic property at 40% o'clock; At this moment chaufeur just has to Das Gaspedal is stepped on more than 60%; Otherwise the switching controls of electrical motor and driving engine will be target with the economy, be 20% control criterion as power conversion with accelerator open degree still, at this moment the demand of the dynamic property out of reach chaufeur of vehicle; Let the people produce the unable sensation of automobile; And if Das Gaspedal is stepped on 60% when above, the dynamic property of vehicle has exceeded the demand of chaufeur, the dynamic property that exceeds will inevitably reduce the economy of vehicle.
The utility model content
To above-mentioned prior art; In order to solve the problem that the Threshold Control Method system can not take into account vehicle dynamic quality and economy; The utility model provides a kind of super light mixed power electric powered motor to switch Fuzzy control system; The design philosophy of the utility model is to use Fuzzy control system with the exact value obfuscation in the Threshold Control Method system; Judge the demand of chaufeur according to the Das Gaspedal aperture, consider the storage battery state-of-charge simultaneously, judge and to satisfy the conversion vehicle speed value that the chaufeur power demand takes into account vehicle economy again dynamic property; It is to be the basis with the transmission of reverse-flow type stepless automatic transmission that the utility model super light mixed power electric powered motor switches Fuzzy control system; Two propulsions source of driving engine and electrical motor are arranged, can be separately or jointly for car load provides power, the characteristics that have that required motor power (output) is little, driving efficiency and energy recovery rate are high, can reduce the energy-saving and emission-reduction cost.
In order to solve the problems of the technologies described above, the technical scheme that the utility model super light mixed power electric powered motor switching Fuzzy control system is achieved is: comprise power system, accelerator pedal position sensor, car speed sensor, engine controller and motor controller; Said power system comprises driving engine and electrical motor; Said driving engine and electrical motor are connected to a metal band type stepless speed variator through a power coupler, and said metal band type stepless speed variator is successively through arriving wheel with transmission of power behind driving system and main reduction gear and the diff; Said electrical motor is connected with a battery pack; Also comprise accumulator monitoring module, fuzzy controller and powershift control module; Said accumulator monitoring module is connected with said battery pack; Said accumulator monitoring module, said accelerator pedal position sensor and car speed sensor all are connected with said fuzzy controller; Said engine controller, motor controller and car speed sensor all are connected with said powershift control module.
Say that further the utility model super light mixed power electric powered motor switches Fuzzy control system, wherein, said metal band type stepless speed variator and said driving system constitute a power reverse-flow type continuously variable automatic transmission.
Compared with prior art, the beneficial effect of the utility model is:
Compare with the Threshold Control Method system when the Das Gaspedal aperture below 40% or 60% have identical dynamic property and economy when above; When the Das Gaspedal aperture 40% between 60% the time, can under the prerequisite of the dynamic property that satisfies the chaufeur demand, improve the economy of automobile.
Description of drawings
Fig. 1 is the super light mixed power automobile topology layout scheme drawing that the utility model relates to;
Fig. 2 is that the utility model super light mixed power electric powered motor switches the Fuzzy control system structured flowchart;
Structure of fuzzy controller scheme drawing in Fig. 3 the utility model;
Fig. 4 the utility model medium power switching controls modular construction scheme drawing.
Among the figure:
The specific embodiment
More clearly understood for the content that makes the utility model, the utility model is done to describe in further detail below in conjunction with the accompanying drawing and the specific embodiment.
Fig. 1 shows the structure of a super light mixed power automobile embodiment, utilizes the control process of powershift Fuzzy control system to be: realize the powershift control to automobile through control clutch 5 and power coupler 6.When vehicle starting and low speed driving by electrical motor 2 independent drive; Power-transfer clutch 5 disconnections this moment; The electric energy that battery pack 4 provides is transported to electrical motor 2 through Power Conversion controller 3, and the torque of electrical motor 2 outputs is delivered to metal band type stepless speed variator 7 through power coupler 6, again via being delivered to wheel behind driving system and main reduction gear and the diff 16; When car acceleration drive to the conversion speed of a motor vehicle of fuzzy controller 23 settings; In conjunction with power-transfer clutch 5, break off power coupler 6, the power of driving engine 1 output is directly delivered to metal band type stepless speed variator 7; Via being delivered to wheel 15 behind driving system and main reduction gear and the diff 16, automobile is by driving engine 1 independent drive again; When car deceleration goes to the conversion speed of a motor vehicle that fuzzy controller is set, in conjunction with power coupler 6, cut-off clutch 5, the propulsion source of automobile converts electrical motor 2 into by driving engine 1.
As shown in Figure 2, the utility model super light mixed power electric powered motor switches Fuzzy control system, comprises power system, accelerator pedal position sensor 21, car speed sensor 25, engine controller and motor controller; Said power system comprises driving engine 1 and electrical motor 2; Said driving engine 1 is connected to a metal band type stepless speed variator 7 with electrical motor 2 through a power coupler; Through behind driving system and main reduction gear and the diff 16 transmission of power being arrived wheel 15, said metal band type stepless speed variator 7 constitutes a power reverse-flow type continuously variable automatic transmission with said driving system to said metal band type stepless speed variator 7 successively; Said electrical motor 2 is connected with a battery pack 4, and is as shown in Figure 1; Also comprise accumulator monitoring module 22, fuzzy controller 23 and powershift control module 26; Said accumulator monitoring module 22 is connected with said battery pack 4; Said accumulator monitoring module 22, said accelerator pedal position sensor 21 all are connected with said fuzzy controller 23 with car speed sensor 25; Said accelerator pedal position sensor 21 passes to fuzzy controller 23 with the signal of accelerator pedal position; The position signal of Das Gaspedal can Approximate Equivalent be a throttle position signal, so the demand of chaufeur to dynamic property can be reacted in the position of Das Gaspedal; Said accumulator monitoring module 22 monitoring storage battery state-of-charge (SOC) signals also pass to fuzzy controller 23, and the SOC value of storage battery not only can be reacted battery pack 4 last electric weight can also react the battery pack discharge efficiency of this moment; Said fuzzy controller 23 receives the accelerator pedal position signal that accelerator pedal position sensors 21 transmit and the storage battery SOC value signal of accumulator monitoring module 22 transmission, the best transition speed of a motor vehicle when judging automobile and carry out powershift through fuzzy logic.Said engine controller 261, motor controller 262 all are connected with said powershift control module 26 with car speed sensor 25; Said car speed sensor 25 records the moving velocity of automobile and passes to powershift control module 26; Said powershift control module 26 is through comparing the automobile actual travel speed and the conversion speed of a motor vehicle; And take all factors into consideration the operating condition of automobile; Send instruction to said engine controller 261 or motor controller 262, thus the switching of control driving engine and electrical motor.
As shown in Figure 3; The fuzzy controller 23 of said powershift Fuzzy control system is with the accelerator pedal position signal and the obfuscation of storage battery SOC value signal that obtain; Carry out the fuzzy reasoning decision-making then, the result who obtains behind the fuzzy reasoning is carried out the reverse gelatinization can obtain the best transition speed of a motor vehicle exact value that automobile carries out powershift.
As shown in Figure 4,26 pairs of automobile driving speeds of the powershift control module of said powershift Fuzzy control system compare with the conversion speed of a motor vehicle, and automobile does not carry out powershift when automobile driving speed reaches the conversion speed of a motor vehicle; When automobile driving speed reached the conversion speed of a motor vehicle, if give it the gun, propulsion source switched to driving engine by electrical motor, if Reduced Speed Now, propulsion source switches to electrical motor by driving engine.
The utility model super light mixed power electric powered motor switches Fuzzy control system; Use signal and storage battery state-of-charge (SOC) signal of fuzzy controller 23 according to the chaufeur control Das Gaspedal aperture that receives; The speed of a motor vehicle when judging driving engine and electrical motor and switching can improve the economy of automobile when Control of Automobile provides the dynamic property that satisfies the chaufeur demand.
The utility model super light mixed power electric powered motor switches Fuzzy control system, confirms the conversion speed of a motor vehicle of driving engine and electrical motor through Das Gaspedal aperture and storage battery SOC value.When the automobile accelerator pedal aperture 20% when following, the conversion speed of a motor vehicle as regulating target, switches to engine drive with economy when driving to 25km/h by the motor drives car acceleration.When the automobile accelerator pedal aperture 60% when above, the conversion speed of a motor vehicle as regulating target, switches to engine drive with dynamic property when driving to 10km/h by the motor drives car acceleration.When the automobile accelerator pedal aperture 20% between 60% the time, along with the increase of Das Gaspedal aperture, the control of the conversion speed of a motor vehicle is squinted to dynamic property by economy.
Taking into account under the condition of economy, when the Das Gaspedal aperture 20% between 40% the time, the powershift speed of a motor vehicle under the fuzzy control is identical with the powershift speed of a motor vehicle under the Threshold Control Method, propulsion source switches to driving engine by electrical motor when the speed of a motor vehicle reaches 25km/h; After the Das Gaspedal aperture surpassed 40%, the conversion speed of a motor vehicle fuzzy control under was along with the conversion of Das Gaspedal aperture reduces gradually, reached 60% back in the Das Gaspedal aperture and changed the speed of a motor vehicle to reach minimum be 10km/h.
It is the power conversion control policy of controlled target with driving engine optimal fuel economy or electrical motor optimum efficiency that the utility model super light mixed power electric powered motor switches Fuzzy control system; With accelerator pedal position and storage battery SOC state is input variable; Design hybrid vehicle power conversion fuzzy controller, set up car load control realistic model.Set forth starting, the speed control of driving engine when switching to engine operation in the literary composition by electrical motor, and the process that combines of power-transfer clutch quick and stable ground.Simulation result shows: the Threshold Control Method obfuscation to the conversion speed of a motor vehicle can make the conversion speed of a motor vehicle meet the requirement of chaufeur to dynamic property more.
The foregoing description only be for explanation clearly done for example, and be not qualification to embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (2)
1. a super light mixed power electric powered motor switches Fuzzy control system, comprises power system, accelerator pedal position sensor (21), car speed sensor (25), engine controller and motor controller; Said power system comprises driving engine (1) and electrical motor (2); Said driving engine (1) and electrical motor (2) are connected to a metal band type stepless speed variator (7) through a power coupler, and said metal band type stepless speed variator (7) is successively through arriving wheel (15) with transmission of power behind driving system and main reduction gear and the diff (16); Said electrical motor (2) is connected with a battery pack (4); It is characterized in that:
Also comprise accumulator monitoring module (22), fuzzy controller (23) and powershift control module (26);
Said accumulator monitoring module (22) is connected with said battery pack (4); Said accumulator monitoring module (22), said accelerator pedal position sensor (21) and car speed sensor (25) all are connected with said fuzzy controller (23);
Said engine controller (261), motor controller (262) and car speed sensor all are connected with said powershift control module (26).
2. switch Fuzzy control system according to the said super light mixed power electric powered motor of claim 1, it is characterized in that: said metal band type stepless speed variator (7) constitutes a power reverse-flow type continuously variable automatic transmission with said driving system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200568603U CN202574209U (en) | 2012-02-21 | 2012-02-21 | Power switch fuzzy control system for super-mild hybrid electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200568603U CN202574209U (en) | 2012-02-21 | 2012-02-21 | Power switch fuzzy control system for super-mild hybrid electric vehicle |
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| CN202574209U true CN202574209U (en) | 2012-12-05 |
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| CN2012200568603U Expired - Fee Related CN202574209U (en) | 2012-02-21 | 2012-02-21 | Power switch fuzzy control system for super-mild hybrid electric vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437971A (en) * | 2018-03-16 | 2018-08-24 | 重庆交通大学 | Super light mixed power automobile reversing starting operating mode division methods |
| CN109733406A (en) * | 2019-01-22 | 2019-05-10 | 湖南普西智能科技有限责任公司 | Policy control method is travelled based on the pure electric automobile of fuzzy control and Dynamic Programming |
-
2012
- 2012-02-21 CN CN2012200568603U patent/CN202574209U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437971A (en) * | 2018-03-16 | 2018-08-24 | 重庆交通大学 | Super light mixed power automobile reversing starting operating mode division methods |
| CN108437971B (en) * | 2018-03-16 | 2019-11-15 | 重庆交通大学 | Super light mixed power automobile reversing starting operating condition division methods |
| CN109733406A (en) * | 2019-01-22 | 2019-05-10 | 湖南普西智能科技有限责任公司 | Policy control method is travelled based on the pure electric automobile of fuzzy control and Dynamic Programming |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20130221 |