CN104670020B - A kind of automobile fixed speed cruise control method - Google Patents
A kind of automobile fixed speed cruise control method Download PDFInfo
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- CN104670020B CN104670020B CN201410830204.8A CN201410830204A CN104670020B CN 104670020 B CN104670020 B CN 104670020B CN 201410830204 A CN201410830204 A CN 201410830204A CN 104670020 B CN104670020 B CN 104670020B
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Abstract
The present invention relates to automobile fixed speed cruise field, more particularly to a kind of automobile fixed speed cruise control method.Cruise push button signalling is inputted to instrument IC, the engine management system EMS of vehicle is sent the cruising condition of vehicle to instrument IC by CAN simultaneously, described instrument IC exports cruise request signal and target vehicle speed signal by CAN according to the cruise push button signalling and cruising condition of reception to engine management system EMS, and described engine management system EMS carries out the switching of cruising condition according to the cruise request signal and target vehicle speed signal and Vehicular status signal of reception.Instrument IC participates in engine management system EMS and completed among the control logic of cruise function, alleviates engine management system EMS burden.The Vehicular status signal of cruise request signal, target vehicle speed signal and vehicle other modules transmission that engine management system EMS is sent according to instrument IC, realizes the switching of cruising condition, makes the control model of cruise more rationally and perfect.
Description
Technical field
The present invention relates to automobile fixed speed cruise field, more particularly to a kind of automobile fixed speed cruise control method.
Background technology
In the process of moving, driver controls speed of operation to automobile by the aperture of gas pedal, when automobile is more
When traveling on flat road, speed change need not do larger change, then the aperture of gas pedal also just needs stabilization
Constant in corresponding aperture size, driver is ridden in gas pedal for a long time, can bring sense of fatigue to driver.Constant speed is patrolled
Boat function can help driver to set the travel speed of automobile, reduce the sense of fatigue of driver, while keeping engine driving
The flatness and stability of torque output during sailing, it is also highly beneficial for reduction oil consumption.
As consumer requires the cost performance of configuration of automobiles more and more higher, normal domestic use passenger car also begins to be equipped with constant speed
Cruise function.Meanwhile, consumer also all the more focuses on the reasonability of man-machine interface and relaxed in addition to increasing automobile function requirement
Adaptive.The control of traditional cruise function occurs inside engine management system EMS, and instrument IC is simultaneously not involved in control logic,
Only make display function, man-machine interface is relatively simple, in addition, the handoff functionality between each cruising condition is not perfect enough.Therefore it provides
A kind of rational automobile fixed speed cruise control method, is easy to build more perfect man-machine interface and is necessary.
The content of the invention
It is an object of the invention to provide a kind of automobile fixed speed cruise control method.Instrument IC participates in the control of cruise function
And display, man-machine interface is more reasonable, and the switching for carrying out cruising condition according to the status of implementation of vehicle makes cruise function more
It is perfect, reasonable.
The technical scheme is that：A kind of automobile fixed speed cruise control method, input cruises push button signalling to instrument IC,
The engine management system EMS of vehicle is sent the cruise control state of vehicle to instrument IC by CAN simultaneously, described
Instrument IC is exported according to the cruise push button signalling and cruise control state of reception by CAN to engine management system EMS
Cruise request signal and target vehicle speed signal, described engine management system EMS is according to the cruise request signal and mesh of reception
Mark GES and Vehicular status signal carries out the switching of cruise control state.
Further, the instrument IC controls cruise request letter according to the cruise push button signalling and cruise control state of reception
Number and target vehicle speed signal output control mode it is as follows：
Described cruise button is including the Cruise keys for cruise function unlatching/closing, for exiting cruise
Cancel keys, in activation cruise after cruise function is opened or the Set/- keys slowed down during cruise, in the past once
Target vehicle speed recovers the Resume/+ keys for entering cruise or accelerating；
Described cruise control state includes cruise malfunction, Cruise Conditions and is unsatisfactory for state, cruise SBR, just
Normal cruising condition, cruising condition of overtaking other vehicles and exit cruising condition；
Cruise keys are pressed, no matter which kind of cruise control state vehicle is in, now cruise function is turned on and off, now
The cruise request signal and target vehicle speed signal that instrument IC is exported to engine management system EMS are invalid signals；
Cancel keys are pressed, instrument IC exports invalid cruise request signal to engine management system EMS, and exports
Target vehicle speed signal when being introduced into cruise before be invalid targets GES, when it advanced into cruise be upper one
The target vehicle speed signal of secondary cruise；
When vehicle is in cruise failure or Cruise Conditions are unsatisfactory for state, any key is pressed, instrument IC is to engine
Management system EMS exports invalid cruise request signal and invalid target vehicle speed signal；
When vehicle is in cruise SBR, Set/- keys are pressed, cruise function activation, instrument IC is to engine management
System EMS export effective cruise request signal and with the target vehicle speed signal equal to current driving speed；Press Resume/
+ key, if advanced into cruise, instrument IC to engine management system EMS export effective cruise request signal and on
The target vehicle speed signal once cruised, if being introduced into cruise before, instrument IC exports invalid to engine management system EMS
Cruise request signal and invalid targets GES；
State is normaled cruise when vehicle is in, Set/- keys are pressed, then instrument IC has to engine management system EMS outputs
Cruise request signal and target vehicle speed the reduction signal of effect；Resume/+ keys are pressed, then instrument IC is to engine management system
EMS exports effective cruise request signal and target vehicle speed increase signal；
When vehicle is in cruising condition of overtaking other vehicles, Set/- keys are pressed, then instrument IC has to engine management system EMS outputs
The cruise request signal of effect and with the target vehicle speed signal equal to current driving speed；Resume/+ keys are pressed, then instrument IC
Effective cruise request signal and target vehicle speed not varying signal are exported to engine management system EMS.
Further, when vehicle, which is in, normals cruise state, the reduction of target vehicle speed signal, increased rate of change and step
Long basis presses Set/- keys, the time length of Resume/+ keys changes and changed.
Further, described instrument IC carries out display output to cruising condition and target vehicle speed, while in cruising condition
It is unsatisfactory for and cruises when overtaking other vehicles in cruise failure, Cruise Conditions, driver is warned.
Further, after vehicle launch, the cruise original state of vehicle is cruise malfunction, when the cruise is related
Signal diagnosis fault-free, without stepping on braking or when the safety operation of clutch, instrument IC send invalid cruise request, cruising condition by
Cruise malfunction is switched to Cruise Conditions and is unsatisfactory for state.
Further, when vehicle is unsatisfactory for state in Cruise Conditions：
If travel condition of vehicle meets cruise function activation calibration range, vehicle will be unsatisfactory for state switching by Cruise Conditions
To cruise SBR；
If cruise coherent signal diagnosis is faulty or has the safety operation for stepping on braking or clutch, vehicle will be by cruise bar
Part is unsatisfactory for state and switches to cruise malfunction.
Further, when vehicle is in cruise SBR：
If instrument IC sends effective cruise request, vehicle will switch to the state of normaling cruise by cruise SBR；
If travel condition of vehicle is unsatisfactory for cruise function activation calibration range, vehicle will be switched to by cruise SBR and patrolled
Boat condition is unsatisfactory for state；
If cruise coherent signal diagnosis is faulty or has the safety operation for stepping on braking or clutch, vehicle will be by cruise bar
Part is unsatisfactory for state and switches to cruise malfunction.
Further, vehicle is in when normaling cruise state：
The pedal if driver steps on the throttle, when the corresponding operator demand's moment of torsion of actual gas pedal and current cruise are virtual
When the difference of the corresponding cruise demand moment of torsion of throttle reaches calibration value, vehicle will be switched to cruise shape of overtaking other vehicles by the state of normaling cruise
State；
If instrument IC sends invalid cruise request, vehicle is switched to by the state of normaling cruise and exits cruising condition；
If cruise coherent signal diagnosis is faulty or has the safety operation for stepping on braking or clutch, vehicle will be by normally patrolling
Boat state switches to cruise malfunction.
Further, vehicle be in overtake other vehicles cruising condition when：
If driver unclamps gas pedal, vehicle is under drag effect, and speed returns to target vehicle speed or so, and vehicle is by just
Normal cruising condition switches to the state of normaling cruise；
If instrument IC sends invalid cruise request, vehicle is switched to by cruising condition of overtaking other vehicles and exits cruising condition；
If cruise coherent signal diagnosis is faulty or has the safety operation for stepping on braking or clutch, vehicle will be patrolled by overtaking other vehicles
Boat state switches to cruise malfunction.
Further, vehicle is in when exiting cruising condition：
If the corresponding demand torque of virtual throttle pedal is less than actual gas pedal corresponding demand torque, vehicle will be by
Exit cruising condition and switch to cruise SBR；
If instrument IC sends effective cruise request, vehicle switches to the state of normaling cruise by exiting cruising condition；
If cruise coherent signal diagnosis is faulty or has the safety operation for stepping on braking or clutch, vehicle will be patrolled by exiting
Boat state switches to cruise malfunction.
The beneficial effects of the invention are as follows：Cruise control button is linked into instrument IC, cruise control shape by way of rigid line
The signal of state is sent to instrument IC by CAN, and instrument IC is sent out by way of CAN to engine management system EMS
Cruise request signal and target vehicle speed signal are sent, the control logic for participating in engine management system EMS completion cruise functions is worked as
In, alleviate engine management system EMS control burden.And the cruise that engine management system EMS is sent according to instrument IC
The Vehicular status signal that other modules related to cruise of request signal, target vehicle speed signal and vehicle are sent, realizes cruise
The switching of state, makes the control model of cruise more rationally and perfect.Instrument IC display targets speed and cruising condition, man-machine boundary
Face is more reasonable, and cruising condition for cruise failure and overtake other vehicles cruise when driver is warned, ensured travel peace
Entirely.
Brief description of the drawings
Fig. 1 is instrument IC attachment structure theory diagrams of the present invention；
Fig. 2 is inventive engine management system EMS control principle drawings；
Fig. 3 is that cruise control state switch logic of the present invention judges schematic diagram；
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.The specific embodiments described herein are merely illustrative of the present invention, is not used to limit
The fixed present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below is each other
Not constituting conflict can just be mutually combined.
The cruise control module of the present invention is integrated in engine management system EMS, and cruise function is mainly pressed by driver
Key input, instrument IC and engine management system EMS are realized jointly.As shown in figure 1, the present invention instrument IC by rigid line with patrolling
Control button of navigating connection, is connected by CAN with engine management system EMS.Instrument IC participates in engine management system
EMS is completed among the control logic of cruise function, cruise push button signalling and engine management system that it not only can be according to input
The cruise control state signal that the EMS that unites is sent carries out the output of cruise request signal and target vehicle speed signal.Can also be to cruise
State and target vehicle speed are shown, and driver is warned when cruising condition is in cruise failure and overtakes other vehicles and cruises
Show, remind driver safety to drive.
In the present invention, cruise control button include control cruise unlatching/shutdown signal input Cruise (cruise opens/
Close key), control cruise exit the Cancel (cruise ESC Escape) of signal input, the Set/- of control setting/reduce-speed sign input
The Resume/+ (resetkey/accelerator key) of (set key/deceleration key), control recovery/signal for faster input.And the cruise of the present invention
State includes cruise failure, Cruise Conditions are unsatisfactory for, cruise prepares, normaled cruise, overtaken other vehicles and cruise and exit cruise.Instrument IC can
With the cruise request signal corresponding with cruising condition signal output of the different cruise push button signallings according to input and target vehicle speed
Signal, the present embodiment lists one group of way of output, shown in table specific as follows：
No matter which kind of cruising condition vehicle is in, being turned on and off for cruise function can both be controlled by pressing Cruise keys.
I.e. when cruise function is not opened, then cruise function is opened, but cruise function people is in unactivated state, therefore instrument IC is to starting
Machine management system EMS exports invalid cruise request signal and invalid target vehicle speed signal (i.e. 255)；When cruise function
Through opening, then cruise function is directly closed (if now directly exiting and patrolling in cruising condition of normaling cruise or overtake other vehicles
Boat, and close cruise function).
No matter which kind of cruising condition vehicle is in, Cancel keys are pressed, then exit cruise, therefore instrument IC is to engine tube
Reason system EMS exports invalid cruise request signal.If being introduced into cruise before, invalid target vehicle speed signal is exported,
If advanced into cruise, the target vehicle speed signal of the last cruise of output, into cruise SBR, waits cruise function
Activation.
When vehicle is in cruise failure or Cruise Conditions are unsatisfactory for state, no matter it is invalid to press what button, now, instrument
Table I C exports invalid cruise request signal and invalid target vehicle speed signal to engine management system EMS；
When vehicle is in cruise SBR, can both the cruise function having been switched on be activated by pressing Set/- keys, be entered
Enter state of normaling cruise, now then instrument IC to engine management system EMS export effective cruise request signal and with etc.
In the target vehicle speed signal of current driving speed.And press Resume/+ keys, if being introduced into cruise before, the button without
Effect, now then instrument IC exports invalid cruise request signal and invalid targets GES to engine management system EMS；
If advanced into cruise, effectively, now instrument IC exports effective cruise request to the case to engine management system EMS
Signal and the target vehicle speed signal of last cruise.
State is normaled cruise when vehicle is in, Set/- keys are pressed, then instrument IC has to engine management system EMS outputs
Cruise request signal and target vehicle speed the reduction signal of effect；Resume/+ keys are pressed, then instrument IC is to engine management system
EMS exports effective cruise request signal and target vehicle speed increase signal.Target vehicle speed reduction, increased speed and step-length root
Change is determined according to the time length of Set/- or Resume/+ keys is pressed.
When vehicle is in cruising condition of overtaking other vehicles, when driver, which unclamps the desired recovery of gas pedal, normals cruise, Resume/
+ key is invalid, that is, presses Resume/+ key instrument IC and be not responding to the instruction, and now IC is exported to engine management system EMS
What the speed of effective cruise request signal and target vehicle speed not varying signal, i.e. vehicle can return to before cruise of overtaking other vehicles normal patrolling
Speed of navigating continues to travel.And now pressing Set/- keys, then instrument IC please to the effective cruise of engine management system EMS outputs
Ask signal and with the target vehicle speed signal equal to current driving speed.I.e. vehicle can be current with vehicle when unclamping Set/- keys
Speed enters for target vehicle speed normals cruise state.
As shown in Fig. 2 the vehicle shape that other modules related to cruise of the vehicle of engine management system EMS receptions are sent
State signal is：Actual vehicle speed signal that ESC (vehicle body stabilizing control system) is sent, TCU (automatic gear-box control unit) are sent
Gear signal, EPB (electronic brake system) exited for the cruise that security consideration is sent signal and EMS some
Internal signal for example brake pedal, accelerator pedal, clutch pedal, engine running condition, current driver's demand torque and
Cruise coherent signal effective marker etc..Engine management system EMS is receiving these coherent signals and instrument IC transmissions
Cruise request and target vehicle speed signal after, compare vehicle actual vehicle speed and cruise button request target vehicle speed, pass through PID's
Control mode, calculates operator demand's moment of torsion, so as to adjust the size of control virtual throttle pedal, the air throttle root of engine
Carry out start according to the virtual throttle pedal in engine management system EMS, control to adjust engine output effective torque, and make vehicle
Travelled according to cruise target speed, and thereby release the actual gas pedal of driver underfooting.Meanwhile, complete cruise function
During, various cruising conditions are exported to IC by CAN.
Engine management system EMS can also carry out logic judgment according to each signal received, control cutting for cruising condition
Change, as shown in Figure 3：
After engine start, cruise control state can rest on cruise malfunction (EMS_CruiseCtrlSts=0),
As cruise coherent signal (speed, clutch, brake pedal, accelerator pedal, cruise button etc.) diagnosis fault-free (Rvv_OBD=
=1), nothing steps on the safety operation (Securite_Ope such as braking or clutch！=1), the cruise button request that instrument is sent is invalid
(Rvv_Switch！=1) when, cruise control state is switched to Cruise Conditions and is unsatisfactory for state (EMS_CruiseCtrlSts=1)
(Cruise Conditions are unsatisfactory for state and refer to that travel condition of vehicle such as speed gear is unsatisfactory for cruise function activation calibration range)；
State is unsatisfactory in Cruise Conditions, when travel condition of vehicle such as speed gear etc., cruise function activation calibration range (Rvv_ is met
Veh_Conditon==1), it will entering cruise SBR (EMS_CruiseCtrlSts=2), (cruise prepares shape
State refers to that travel condition of vehicle such as speed gear meets cruise function activation calibration range), wait cruise button request effectively to refer to
Make and (press Set/- keys) activation to enter cruise；Equally, during cruise SBR or cruise, travel condition of vehicle is not
Meet cruise function setting range (Rvv_Veh_Conditon！=1), it will come back to Cruise Conditions and be unsatisfactory for state；
In the case that the button that cruises asks effectively (Rvv_Switch==1) (pressing Set/- keys), into the state of normaling cruise
(EMS_CruiseCtrlSts=3) (vehicle is cruised with target velocity)；During normaling cruise, stepped on if driver steps on the gas
Plate, when the corresponding operator demand's moment of torsion of actual gas pedal is more than current cruise virtual throttle correspondence cruise demand moment of torsion to one
When determining degree, i.e. Torque_Req>=Torque_Rvv+Torque_delta1, engine will respond actual gas pedal correspondence
Operator demand's moment of torsion, vehicle accelerates, and cruise, which enters, overtakes other vehicles cruising condition (EMS_CruiseCtrlSts=4)；Driver pine
(Torque_Drive is opened after gas pedal<=Torque_Rvv+Torque_delta2), speed will slowly drop in drag effect
To target cruise (Actual_spd<=Target_spd+delta_spd) left and right, the state of normaling cruise will be reentered (now
If pressing Set/- keys, vehicle can using unclamp vehicle current vehicle speed during Set/- keys as target vehicle speed enter normal cruise shape
State)；Under the cruising condition for cruise of normaling cruise or overtake other vehicles, driver, which pushes button, exits cruise, that is, button request nothing of cruising
Imitate (Rvv_Switch！=1), then it will enter and exit cruise (EMS_CruiseCtrlSts=5)；In virtual throttle pedal correspondence
Demand torque decline when being transitioned into below the corresponding demand torque of actual gas pedal, vehicle reenters cruise SBR
(EMS_CruiseCtrlSts=2), vehicle will respond actual gas pedal again.Wherein, no matter which kind of cruise shape vehicle is in
State, as any cruise coherent signal diagnosis failure (Rvv_OBD！=1) or safety operation activation (Securite_Ope==
1), cruising condition can all be switched to cruise malfunction.
The foregoing is only a specific embodiment of the invention, it is noted that any those skilled in the art exist
Disclosed herein technical scope in, the change or replacement that can be readily occurred in, should all cover protection scope of the present invention it
It is interior.
Claims (9)
1. a kind of automobile fixed speed cruise control method, it is characterised in that：Press cruise button and cruise is sent by way of rigid line
Push button signalling is to instrument IC, while the engine management system EMS of vehicle is sent out the cruise control state of vehicle by CAN
Deliver to instrument IC, described instrument IC is according to the cruise push button signalling and cruise control state of reception by CAN to starting
Machine management system EMS exports cruise request signal and target vehicle speed signal, the cruise control state include cruise malfunction,
Cruise Conditions are unsatisfactory for state, the SBR that cruises, normal cruise state, cruising condition of overtaking other vehicles and exit cruising condition, described
Engine management system EMS according to the cruise request signal and target vehicle speed signal and Vehicular status signal of reception carry out patrol
The switching for state of a control of navigating, wherein, after vehicle launch, the cruise original state of vehicle is cruise malfunction, when cruise phase
When OFF signal diagnosis fault-free, nothing step on braking or the safety operation of clutch, instrument IC transmission invalid cruise requests, cruise control
State is switched to Cruise Conditions by cruise malfunction and is unsatisfactory for state.
2. a kind of automobile fixed speed cruise control method as claimed in claim 1, it is characterised in that：The instrument IC is according to reception
Cruise push button signalling and cruising condition control cruise request signal and target vehicle speed signal output control mode it is as follows：
Described cruise button include for the Cruise keys of cruise function unlatching/closing, the Cancel keys for exiting cruise,
For in the Set/- keys that activation after cruise function is opened is cruised or is slowed down during cruise, for a former target vehicle speed
Recover the Resume/+ keys for entering cruise or accelerating；
Cruise keys are pressed, no matter which kind of cruise control state vehicle is in, now cruise function is turned on and off, now instrument
The cruise request signal and target vehicle speed signal that IC is exported to engine management system EMS are invalid signals；
Press Cancel keys, instrument IC exports invalid cruise request signal to engine management system EMS, and the mesh exported
It is invalid targets GES that GES, which is marked, when being introduced into cruise before, is once patrolled to be upper when it advances into cruise
The target vehicle speed signal of boat；
When vehicle is in cruise failure or Cruise Conditions are unsatisfactory for state, any key is pressed, instrument IC is to engine management
System EMS exports invalid cruise request signal and invalid target vehicle speed signal；
When vehicle is in cruise SBR, Set/- keys are pressed, cruise function activation, instrument IC is to engine management system
EMS export effective cruise request signal and with the target vehicle speed signal equal to current driving speed；Resume/+ keys are pressed,
If advanced into cruise, instrument IC exports effective cruise request signal and last time to engine management system EMS
The target vehicle speed signal of cruise, if being introduced into cruise before, instrument IC is patrolled to engine management system EMS outputs are invalid
Navigate request signal and invalid targets GES；
State is normaled cruise when vehicle is in, Set/- keys are pressed, then instrument IC exports effective to engine management system EMS
Cruise request signal and target vehicle speed reduction signal；Resume/+ keys are pressed, then instrument IC is defeated to engine management system EMS
Go out effective cruise request signal and target vehicle speed increase signal；
When vehicle is in cruising condition of overtaking other vehicles, Set/- keys are pressed, then instrument IC exports effective to engine management system EMS
Cruise request signal and with the target vehicle speed signal equal to current driving speed；Resume/+ keys are pressed, then instrument IC is to hair
Motivation management system EMS exports effective cruise request signal and target vehicle speed not varying signal.
3. a kind of automobile fixed speed cruise control method as claimed in claim 2, it is characterised in that：Normaled cruise when vehicle is in
During state, the reduction of target vehicle speed signal, increased rate of change and step-length according to press Set/- keys, Resume/+ keys time it is long
It is short change and change.
4. a kind of automobile fixed speed cruise control method as claimed in claim 2, it is characterised in that：Described instrument IC is to cruise
State of a control and target vehicle speed carry out display output, while being in cruise malfunction, Cruise Conditions not in cruise control state
Meet and cruise overtake other vehicles state when, driver is warned.
5. a kind of automobile fixed speed cruise control method as claimed in claim 2, it is characterised in that when vehicle is in Cruise Conditions
When being unsatisfactory for state：
If travel condition of vehicle meets cruise function activation calibration range, vehicle will be unsatisfactory for state by Cruise Conditions and switch to patrol
Navigate SBR；
If cruise coherent signal diagnosis is faulty or has the safety operation for stepping on braking or clutch, vehicle will be by Cruise Conditions not
The state of satisfaction switches to cruise malfunction.
6. a kind of automobile fixed speed cruise control method as claimed in claim 2, it is characterised in that prepare when vehicle is in cruise
During state：
If instrument IC sends effective cruise request, vehicle will switch to the state of normaling cruise by cruise SBR；
If travel condition of vehicle is unsatisfactory for cruise function activation calibration range, vehicle will be switched to cruise bar by cruise SBR
Part is unsatisfactory for state；
If cruise coherent signal diagnosis is faulty or has the safety operation for stepping on braking or clutch, vehicle will be by Cruise Conditions not
The state of satisfaction switches to cruise malfunction.
7. a kind of automobile fixed speed cruise control method as claimed in claim 2, it is characterised in that vehicle is in and normals cruise shape
During state：
The pedal if driver steps on the throttle, when the corresponding operator demand's moment of torsion of actual gas pedal is more than the virtual oil of current cruise
During the difference calibration value of the corresponding cruise demand moment of torsion of door, vehicle will switch to cruising condition of overtaking other vehicles by the state of normaling cruise；
If instrument IC sends invalid cruise request, vehicle is switched to by the state of normaling cruise and exits cruising condition；
If cruise coherent signal diagnosis is faulty or has the safety operation for stepping on braking or clutch, vehicle will be by normaling cruise shape
State switches to cruise malfunction.
8. a kind of automobile fixed speed cruise control method as claimed in claim 2, it is characterised in that vehicle is in cruise shape of overtaking other vehicles
During state：
If driver unclamps gas pedal, vehicle switches to the state of normaling cruise by cruising condition of overtaking other vehicles；
If instrument IC sends invalid cruise request, vehicle is switched to by cruising condition of overtaking other vehicles and exits cruising condition；
If cruise coherent signal diagnosis is faulty or has the safety operation for stepping on braking or clutch, vehicle will be by cruise shape of overtaking other vehicles
State switches to cruise malfunction.
9. a kind of automobile fixed speed cruise control method as claimed in claim 2, it is characterised in that vehicle is in and exits cruise shape
During state：
If the corresponding demand torque of virtual throttle pedal is less than actual gas pedal corresponding demand torque, vehicle will be by exiting
Cruising condition switches to cruise SBR；
If instrument IC sends effective cruise request, vehicle switches to the state of normaling cruise by exiting cruising condition；
If cruise coherent signal diagnosis is faulty or has the safety operation for stepping on braking or clutch, vehicle will be by exiting cruise shape
State switches to cruise malfunction.
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| CN201410830204.8A CN104670020B (en) | 2014-12-26 | 2014-12-26 | A kind of automobile fixed speed cruise control method |
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| US8810383B2 (en) * | 2012-08-13 | 2014-08-19 | Ford Global Technologies, Llc | System and method for controlling adaptive cruise control based on driver status |
| CN203996230U (en) * | 2014-02-24 | 2014-12-10 | 浙江吉利控股集团有限公司 | A kind of self-adaption cruise system |
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