CN113911098A - HDC high-precision vehicle speed control method and system combined with cruise control - Google Patents
HDC high-precision vehicle speed control method and system combined with cruise control Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/14—Adaptive cruise control
- B60W30/143—Speed control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W2050/146—Display means
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Combustion & Propulsion (AREA)
- Transportation (AREA)
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- Automation & Control Theory (AREA)
- Human Computer Interaction (AREA)
- Controls For Constant Speed Travelling (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
The invention provides a high-precision HDC vehicle speed control method and system combined with cruise control.A ESP arbitration controller receives an HDC switch state signal sent by an HDC switch; judging whether the HDC switch state signal is started, if so, indicating that a driver requests to enter the HDC function; judging the current running road surface state of the vehicle: if the vehicle is in the downhill, the ESP arbitration controller acquires the current vehicle speed, and activates the HDC module when the conditions are met, so that the HDC module is in an ON state; the HDC switch indicator lights up. The invention realizes accurate control of HDC vehicle speed and reduces driving intensity of a driver, and the invention combines with cruise switch adjustment, and comprises comprehensive control of EMS engine control, TCU transmission controller, brake system and instrument, and the driver can accurately set a target vehicle speed by using the cruise switch according to different road conditions, thereby facilitating the driver to drive the vehicle and improving driving and control performance under various road conditions.
Description
Technical Field
The invention relates to the technical field of vehicle speed control, in particular to an HDC high-precision vehicle speed control method and system combined with cruise control.
Background
With the increasing living standard of people, the upgrading of light commercial vehicles and the youth of automobile consumers, people need the light commercial vehicles, not only are the tool type vehicles, but also travel seats with certain comfort, interest and simple and convenient operation are provided, and drivers can hope that the vehicles can easily drive various vehicle conditions.
At present, an accelerator pedal and a brake pedal are adopted for vehicle speed control, a driver cannot accurately set a target vehicle speed due to response reasons of an engine and braking, particularly, the driver needs to repeatedly operate the accelerator pedal and the brake pedal to control the vehicle speed on a road section with more uphill and downhill slopes, and running danger is easily caused if control is not timely performed.
Disclosure of Invention
In order to ensure that the vehicle runs on a slope more safely, comfortably and simply, the invention provides the HDC high-precision vehicle speed control method combined with cruise control, which is convenient for a driver to select and improves the control performance of the vehicle.
The method comprises the following steps: the ESP arbitration controller receives an HDC switch state signal sent by the HDC switch;
judging whether the HDC switch state signal is started, if so, indicating that a driver requests to enter the HDC function;
the ESP arbitration controller judges the current running road surface state of the vehicle:
if the vehicle is downhill, the ESP arbitration controller acquires the current vehicle speed, and activates the HDC module to enable the HDC module to be in an ON state when the current vehicle speed is greater than 8km/h and less than 60 km/h;
the HDC switch indicator lights up.
It is further noted that the ESP arbitration controller determines the current driving road surface state of the vehicle:
if the road is level or uphill, the HDC module is not activated;
if the current vehicle speed is less than 8km/h, the HDC module is not activated;
if the current vehicle speed is more than 60km/h, the HDC module is not activated.
It should be further noted that after the HDC module is in the ON state, if the current vehicle speed is greater than the maximum vehicle speed of the HDC active control, the ESP arbitration controller sends a signal indicating that the HDC active control is in the standby state to the gateway;
the gateway sends the HDC active control standby state signal to an EMS engine controller and a TCU controller;
the HDC active control function is not activated, and the meter displays the state that the HDC active control function is not started.
It is further noted that when the vehicle speed is less than the maximum HDC active control vehicle speed, the ESP arbitration controller sends an HDC active control activation status signal to the gateway;
the gateway sends the HDC active control activation state signal to an instrument, an EMS engine controller and a TCU controller;
and the HDC actively controls and activates, and the instrument displays the activated running state of the HDC active control function.
It is further noted that the ESP arbitration controller determines whether the brake pedal is pressed;
if the vehicle is stepped on, the driver adjusts the target vehicle speed through the brake pedal, and the vehicle speed is controlled through the brake pedal braking process;
if the brake pedal is not pressed down, the ESP arbitration controller judges whether the position of the engine throttle is in an output state;
if the vehicle is in an output state, the HDC active control function is not activated, and the vehicle speed is controlled by a driver throttle signal.
It is further noted that when the engine throttle position is set to the minimum value, the ESP arbitration controller determines whether the current vehicle speed meets the HDC activation condition;
if the current vehicle speed is more than 8km/h and less than 60km/h, activating the HDC module to enable the HDC module to be in an ON state;
the HDC switch indicator lights up.
It is further noted that the ESP arbitration controller determines whether the cruise control is on;
if the cruise control is started, a cruise switch is adopted to adjust the HDC target speed, an ESP arbitration controller arbitrates the HDC target speed and then sends a cruise control instruction to a gateway, and the gateway sends the cruise control instruction to an instrument, an EMS engine controller and a TCU controller;
and if the cruise control is not started, performing HDC control according to the currently determined target vehicle speed.
It should be further noted that the ESP arbitration controller obtains current gear information, actual torque information of the flywheel end of the engine, engine speed information and four wheel speed information, and determines whether to perform torque up or torque down control on the engine, and realizes the HDC target vehicle speed;
if the engine torque reduction is needed, the ESP arbitration controller sends an engine torque reduction activation signal, an engine slow torque reduction signal or an engine fast torque reduction signal to the EMS engine controller; the EMS engine controller executes a torque reduction request to realize HDC target vehicle speed control;
if the engine torque-up is needed, the ESP arbitration controller sends an engine torque-up request signal and an engine torque-up value to the EMS engine controller; the EMS engine controller executes a torque-up request to realize HDC target vehicle speed control;
if the engine torque reduction is not needed, the ESP arbitration controller judges whether the braking intervention is needed to realize the HDC target vehicle speed control;
if braking intervention is needed, the ESP arbitration controller sends a brake lamp lighting signal to the gateway, the gateway sends the movable lamp lighting signal to the EMS engine controller and the TCU controller, the brake lamp is lighted, meanwhile, a brake pipeline is braked to build pressure, and HDC target vehicle speed control is carried out.
When the ESP arbitration controller receives the HDC switch quitting request signal, the ESP arbitration controller sends an HDC closing signal to the gateway, the gateway sends the HDC closing signal to the EMS engine controller and the TCU controller, the HDC switch indicator lamp is closed, and the HDC function quits.
The invention also provides a high-precision HDC vehicle speed control system combined with cruise control, which comprises: the system comprises an ESP arbitration controller, an HDC switch, a gateway, an EMS engine controller, a TCU controller and a control strategy signal definition module;
the ESP arbitration controller is connected with the HDC switch and receives an HDC switch state signal sent by the HDC switch;
the ESP arbitration controller is respectively connected with the EMS engine controller and the TCU controller through a gateway to control the HDC target vehicle speed;
the control strategy signal definition module is used for respectively configuring a signal name, signal content and parameters corresponding to each control signal;
the control signals communicated among the ESP arbitration controller, the EMS engine controller and the TCU controller are transmitted by signal names, signal contents and parameters.
According to the technical scheme, the invention has the following advantages:
in the HDC high-precision vehicle speed control method and system combined with cruise control, a driver can start an HDC steep descent function in real time according to road conditions, and under the condition of function activation under complex road conditions such as mountainous regions, curves and the like, the driver does not need to always control an accelerator pedal and a brake pedal, and the HDC realizes downhill vehicle speed control according to a target vehicle speed requested by the driver, so that the operation intensity of the driver is reduced, and the driving process is easier.
The speed of a vehicle controlled by the pedal operated by a driver is greatly influenced by driving experience and emotion, and the risk of brake overheating exists when a novice brakes frequently. The HDC system is used for controlling the vehicle speed, so that the operation mode of an experienced driver can be simulated, the engine, the gearbox and the brake can be cooperatively controlled, the brake participation proportion can be effectively reduced, and the safety of long-time downhill driving is improved.
The cruise switch controls the vehicle speed with higher precision, and can finish the setting of the target vehicle speed in advance, so that the HDC vehicle speed control is more intelligent and finer, and the vehicle driving feeling is greatly improved.
In the invention, after the HDC function is started when the vehicle descends, a driver is required to set a target speed according to the requirement, and the HDC system automatically controls the torque and the brake of the engine to enable the vehicle to slowly descend at the target speed. The invention realizes accurate control of HDC vehicle speed, reduces driving intensity of a driver, combines with cruise switch adjustment, and comprises comprehensive control of EMS engine control, a TCU transmission controller, a brake system and instruments, the driver can accurately set a target vehicle speed by using the cruise switch according to different road conditions, and the HDC controller vehicle can automatically adjust output of engine torque and brake force according to the strategy, thereby facilitating the driver to drive the vehicle and improving driving and control performance under various road conditions.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of an HDC high accuracy vehicle speed control system incorporating cruise control;
FIG. 2 is a schematic diagram of an embodiment of an HDC high-precision vehicle speed control system incorporating cruise control.
FIG. 3 is a flow chart of a HDC high accuracy vehicle speed control method incorporating cruise control.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The elements and algorithm steps of each example described in the embodiments disclosed in the HDC high-precision vehicle speed control method and system in conjunction with cruise control provided by the present invention can be implemented in electronic hardware, computer software, or a combination of both, and in the foregoing description, the components and steps of each example have been generally described in terms of function in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The HDC to which the present invention relates is a comfort function that helps the driver to drive downhill by active intervention, controlling the speed of the vehicle without driver intervention. By pressing the HDC button, the HDC function is turned on and off. The driver may change the target speed by a brake pedal or an accelerator pedal, a cruise switch, if desired. The control precision of the vehicle speed of a brake pedal and an accelerator pedal is low, and especially a novice driver is difficult to quickly adjust the target vehicle speed in place; through increasing the control of the cruise switch, the hierarchical adjustment of the target vehicle speed can be realized according to the set control precision, and the control is accurate and simple.
The block diagram shown in the attached drawings of the HDC high-precision vehicle speed control method and system combined with the cruise control provided by the invention is only a functional entity and does not necessarily correspond to a physically independent entity. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
As shown in fig. 1 to 2, the HDC high-precision vehicle speed control system incorporating cruise control provided by the present invention includes: an ESP arbitration controller 2, an HDC switch 1, a gateway 3, an EMS engine controller 4, a TCU controller 5 and a control strategy signal definition module;
the ESP arbitration controller 2 is connected with the HDC switch 1, and the ESP arbitration controller 2 receives an HDC switch 1 state signal sent by the HDC switch 1;
the ESP arbitration controller 2 is respectively connected with an EMS engine controller 4 and a TCU controller 5 through a gateway 3 to control the HDC target vehicle speed;
the control strategy signal definition module is used for respectively configuring a signal name, signal content and parameters corresponding to each control signal;
the control signals communicated between the ESP arbitration controller 2, the EMS engine controller 4, and the TCU controller 5 are transmitted by signal names, signal contents, and parameters.
The system can also be provided with an HDC function control system, a power system, a transmission system, a brake, an instrument system, a vehicle body control system and the like according to the actual requirements of the vehicle.
The HDC function of the invention is divided into HDC switch, HDC indicator light display and speed regulation. The HDC switch has two states of switching on and switching off; HDC pilot lamp and instrument system cooperation indicate HDC functional state, and three kinds of states exist in the HDC function: HDC OFF state indicator lamps are turned OFF, and HDC ON state indicator lamps are turned ON (including HDC ON Active and HDC ON Not Active); the instrument system displays different states of HDC ON Active and HDC ON Not Active; the speed regulation system mainly comprises a braking deceleration request, an accelerator acceleration request and a cruise switch acceleration and deceleration request; powertrain controller acronym (EMS); the transmission system is divided into a gearbox and a transfer case, and a gearbox controller is abbreviated as (TCU); instrumentation systems abbreviated (IP); the vehicle body control system is abbreviated as (BMS), and the device can coordinate with the vehicle body control system, carry out arbitration judgment on HDC function activation and vehicle speed selection selected by a driver, and finally decide a reasonable control mode.
After the HDC function is started when the vehicle descends, a driver is required to set a target vehicle speed according to the requirement, and the HDC system automatically controls the torque and the brake of the engine to enable the vehicle to slowly descend at the target vehicle speed. The invention realizes accurate control of HDC vehicle speed, reduces driving intensity of a driver, combines with cruise switch adjustment, and comprises comprehensive control of EMS engine control, a TCU transmission controller, a brake system and instruments, the driver can accurately set a target vehicle speed by using the cruise switch according to different road conditions, and the HDC controller vehicle can automatically adjust output of engine torque and brake force according to the strategy, thereby facilitating the driver to drive the vehicle and improving driving and control performance under various road conditions.
Based on the system, the invention also provides an HDC high-precision vehicle speed control method combined with cruise control, which is shown in FIG. 3. The method uses the control strategy signal as a transmission mode, and sends and transmits a control instruction according to the defined signal name, signal content and meaning in the control execution process.
The control strategy signal is defined as follows:
the control method of the invention comprises the following steps:
when the ESP arbitration controller receives the HDC switch request signal GW _ HdcSwitch, it first determines whether the value of the signal GW _ HdcSwitch is 0x1, and if it is 0x1, which indicates that the driver requests to enter the HDC function, the ESP controller determines whether the current road section on which the vehicle is traveling is a downhill, a flat road, or an uphill.
If the road is level or uphill, the HDC function is not activated;
if the downhill HDC function is ready to be switched to the on state, the ESP arbitration controller calculates the current vehicle speed according to ESP _ WheelSpeed _ FL, ESP _ WheelSpeed _ FR, ESP _ WheelSpeed _ RL and ESP _ WheelSpeed _ RR signals, and if the current vehicle speed is less than 8km/h, the HDC function is not activated; if the current vehicle speed is more than 60km/h, the HDC function is not activated; if the current vehicle speed is more than 8km/h and less than 60km/h, the HDC function is in an ON state; the HDC switch indicator lights up.
After the HDC function is in an ON state, the ESP arbitration controller judges that if the current vehicle speed is greater than the HDC active control maximum vehicle speed, taking 35km/h as an example, the ESP arbitration controller sends an ESP _ HDCStatus value of 0x1 to the gateway, the gateway sends the signal value to the EMS, the TCU and the IP, the HDC active control function is not activated, and the instrument displays an HDC ON not active; when the vehicle speed is high; the ESP arbitration controller judges that if the current vehicle speed is less than the HDC active control maximum vehicle speed, the ESP arbitration controller sends an ESP _ HDCStatus value of 0x2 to the gateway, and the gateway sends signal values to the instrument, the EMS engine controller and the TCU controller. The HDC function is activated, and the instrument displays HDC ON active.
The ESP arbitration controller determines whether EMS _ brakepadestatus is 0x1, and if it is 0x1, it indicates that the driver adjusts the target vehicle speed by the brake pedal, and HDC control is performed with the vehicle speed at which 0x1 is switched to 0x0 as the target vehicle speed.
If the speed is 0x0, the ESP arbitration controller judges whether EMS _ ThrottePosition is a value between 0x1 and 0xFF, if the speed is a value between 0x1 and 0xFF, the driver steps on an accelerator pedal to actively accelerate, the HDC active control function is not activated, and the vehicle speed is controlled by a driver accelerator signal;
when EMS _ throttleeposition is 0x0, the ESP arbitration controller determines whether the current vehicle speed satisfies the HDC activation condition in the manner described above.
The ESP arbitration controller judges whether EMS _ CruiseControlStatus is a certain value of 0x1, 0x2, 0x3, 0x4, 0x5, 0x6 and 0x7, if yes, the driver adopts a cruise switch to adjust the HDC target vehicle speed, after arbitration of the ESP arbitration controller, the ESP arbitration controller sends ESP _ HDCStatus to the gateway, and the gateway sends the signal value to the instrument, the EMS engine controller and the TCU controller. If the EMS _ CruiseControlStatus is 0x0, HDC control is performed at the currently determined target vehicle speed.
The ESP arbitration controller receives TCU _ CurrentGear, EMS _ Effect Engine Torque, EMS _ EngineerSpeed, ESP _ WheelSpeed _ FL, ESP _ WheelSpeed _ FR, ESP _ WheelSpeed _ RL and ESP _ WheelSpeed _ RR to judge whether engine torque-up or torque-down is needed to achieve HDC target vehicle speed, and if engine torque-down is needed, the ESP arbitration controller sends an ESP _ Basc signal value of 0x1, and an ESP _ Torque ReqSlow or an ESP _ Torque ReqFast signal value of 0x 1-0 Xffe to the EMS engine controller.
The EMS engine controller executes a torque reduction request; if the engine is required to be torque-up, the ESP arbitration controller sends an ESP _ Torque IncSt signal value of 0x1 and a certain value between the ESP _ Torque Increate signal values of 0x 1-0 Xffe to the EMS engine controller, and the EMS engine controller executes a torque-up request; the HDC target vehicle speed is achieved. If the engine torque reduction is not needed, the ESP arbitration controller judges whether the HDC target vehicle speed is achieved by braking intervention, if the braking intervention is needed, the ESP arbitration controller sends an ESP _ BLRequestController signal value 0x0 to the gateway, the gateway sends the signal value to the instrument, the EMS engine controller and the TCU controller, the brake lamp is lightened, meanwhile, the brake pipeline is pressurized, and the HDC target vehicle speed is controlled.
When the ESP arbitration controller receives an HDC switch request signal GW _ HdcSwitch switched to 0x0, the driver requests to quit HDC control, the ESP arbitration controller sends an ESP _ HDCStatus signal value 0x0 to the gateway, the gateway sends the signal value to the instrument, the EMS engine controller and the TCU controller, the HDC ON information of the instrument is not displayed any more, the HDC switch indicator lamp is turned off, and the HDC function quits.
In the HDC high-precision vehicle speed control method and system combined with cruise control, a driver can start an HDC steep descent function in real time according to road conditions, and under the condition of function activation under complex road conditions such as mountainous regions, curves and the like, the driver does not need to always control an accelerator pedal and a brake pedal, and the HDC realizes downhill vehicle speed control according to a target vehicle speed requested by the driver, so that the operation intensity of the driver is reduced, and the driving process is easier.
The speed of a vehicle controlled by the pedal operated by a driver is greatly influenced by driving experience and emotion, and the risk of brake overheating exists when a novice brakes frequently. The HDC system is used for controlling the vehicle speed, so that the operation mode of an experienced driver can be simulated, the engine, the gearbox and the brake can be cooperatively controlled, the brake participation proportion can be effectively reduced, and the safety of long-time downhill driving is improved.
The cruise switch controls the vehicle speed with higher precision, and can finish the setting of the target vehicle speed in advance, so that the HDC vehicle speed control is more intelligent and finer, and the vehicle driving feeling is greatly improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An HDC high-precision vehicle speed control method combined with cruise control is characterized by comprising the following steps:
the ESP arbitration controller receives an HDC switch state signal sent by the HDC switch;
judging whether the HDC switch state signal is started, if so, indicating that a driver requests to enter the HDC function;
the ESP arbitration controller judges the current running road surface state of the vehicle:
if the vehicle is downhill, the ESP arbitration controller acquires the current vehicle speed, and activates the HDC module to enable the HDC module to be in an ON state when the current vehicle speed is greater than 8km/h and less than 60 km/h;
the HDC switch indicator lights up.
2. The HDC high-precision vehicle speed control method combined with cruise control according to claim 1, characterized by ESP arbitration controller determining vehicle current running road state:
if the road is level or uphill, the HDC module is not activated;
if the current vehicle speed is less than 8km/h, the HDC module is not activated;
if the current vehicle speed is more than 60km/h, the HDC module is not activated.
3. A HDC high accuracy vehicle speed control method in combination with cruise control according to claim 1,
after the HDC module is in an ON state, if the current vehicle speed is greater than the maximum vehicle speed of the HDC active control, the ESP arbitration controller sends an HDC active control standby state signal to the gateway;
the gateway sends the HDC active control standby state signal to an EMS engine controller and a TCU controller;
the HDC active control function is not activated, and the meter displays the state that the HDC active control function is not started.
4. A HDC high accuracy vehicle speed control method in combination with cruise control according to claim 3,
when the vehicle speed is less than the HDC active control maximum vehicle speed, the ESP arbitration controller sends an HDC active control activation state signal to the gateway;
the gateway sends the HDC active control activation state signal to an instrument, an EMS engine controller and a TCU controller;
and the HDC actively controls and activates, and the instrument displays the activated running state of the HDC active control function.
5. A HDC high accuracy vehicle speed control method in combination with cruise control according to claim 1,
the ESP arbitration controller judges whether the brake pedal state is treaded down;
if the vehicle is stepped on, the driver adjusts the target vehicle speed through the brake pedal, and the vehicle speed is controlled through the brake pedal braking process;
if the brake pedal is not pressed down, the ESP arbitration controller judges whether the position of the engine throttle is in an output state;
if the vehicle is in an output state, the HDC active control function is not activated, and the vehicle speed is controlled by a driver throttle signal.
6. A HDC high accuracy vehicle speed control method in combination with cruise control according to claim 1,
when the position of an engine throttle is the minimum value, the ESP arbitration controller judges whether the current vehicle speed meets the HDC activation condition;
if the current vehicle speed is more than 8km/h and less than 60km/h, activating the HDC module to enable the HDC module to be in an ON state;
the HDC switch indicator lights up.
7. A HDC high accuracy vehicle speed control method in combination with cruise control according to claim 1,
the ESP arbitration controller judges whether the cruise control is started or not;
if the cruise control is started, a cruise switch is adopted to adjust the HDC target speed, an ESP arbitration controller arbitrates the HDC target speed and then sends a cruise control instruction to a gateway, and the gateway sends the cruise control instruction to an instrument, an EMS engine controller and a TCU controller;
and if the cruise control is not started, performing HDC control according to the currently determined target vehicle speed.
8. A HDC high accuracy vehicle speed control method in combination with cruise control according to claim 1,
the ESP arbitration controller acquires current gear information, actual torque information of an engine flywheel end, engine rotating speed information and four wheel rotating speed information, judges whether torque increasing or torque decreasing control needs to be carried out on the engine, and achieves HDC target vehicle speed;
if the engine torque reduction is needed, the ESP arbitration controller sends an engine torque reduction activation signal, an engine slow torque reduction signal or an engine fast torque reduction signal to the EMS engine controller; the EMS engine controller executes a torque reduction request to realize HDC target vehicle speed control;
if the engine torque-up is needed, the ESP arbitration controller sends an engine torque-up request signal and an engine torque-up value to the EMS engine controller; the EMS engine controller executes a torque-up request to realize HDC target vehicle speed control;
if the engine torque reduction is not needed, the ESP arbitration controller judges whether the braking intervention is needed to realize the HDC target vehicle speed control;
if braking intervention is needed, the ESP arbitration controller sends a brake lamp lighting signal to the gateway, the gateway sends the movable lamp lighting signal to the EMS engine controller and the TCU controller, the brake lamp is lighted, meanwhile, a brake pipeline is braked to build pressure, and HDC target vehicle speed control is carried out.
9. A HDC high accuracy vehicle speed control method in combination with cruise control according to claim 8,
when the ESP arbitration controller receives the HDC switch quitting request signal, the ESP arbitration controller sends an HDC closing signal to the gateway, the gateway sends the HDC closing signal to the EMS engine controller and the TCU controller, the HDC switch indicator lamp is closed, and the HDC function quits.
10. An HDC high-precision vehicle speed control system combined with cruise control, which is characterized in that the system adopts the HDC high-precision vehicle speed control method combined with cruise control as claimed in any one of claims 1 to 9;
the system comprises: the system comprises an ESP arbitration controller, an HDC switch, a gateway, an EMS engine controller, a TCU controller and a control strategy signal definition module;
the ESP arbitration controller is connected with the HDC switch and receives an HDC switch state signal sent by the HDC switch;
the ESP arbitration controller is respectively connected with the EMS engine controller and the TCU controller through a gateway to control the HDC target vehicle speed;
the control strategy signal definition module is used for respectively configuring a signal name, signal content and parameters corresponding to each control signal;
the control signals communicated among the ESP arbitration controller, the EMS engine controller and the TCU controller are transmitted by signal names, signal contents and parameters.
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040049409A (en) * | 2002-12-05 | 2004-06-12 | 주식회사 만도 | Hill descent control Apparatus for vehicle |
| CN102991501A (en) * | 2011-09-13 | 2013-03-27 | 福特环球技术公司 | Method and system for vehicle speed control |
| CN105857292A (en) * | 2016-04-11 | 2016-08-17 | 中国重汽集团济南动力有限公司 | Downhill constant-speed control system for heavy-duty automobile |
| WO2017036491A1 (en) * | 2015-08-28 | 2017-03-09 | Volvo Truck Corporation | A method and a system for controlling vehicle speed |
| CN106541941A (en) * | 2016-10-19 | 2017-03-29 | 东风汽车公司 | Automatic Pilot speed control system and method based on high-precision navigation positioning system |
| CN107161128A (en) * | 2017-05-23 | 2017-09-15 | 重庆长安汽车股份有限公司 | A kind of control method of automobile abrupt slope slow-descending system |
| CN109334656A (en) * | 2017-12-27 | 2019-02-15 | 长城汽车股份有限公司 | A kind of control method for vehicle and device |
| CN110155051A (en) * | 2019-04-30 | 2019-08-23 | 吉林大学青岛汽车研究院 | A kind of truck speed change cruise fuel-economizing controlling method |
| CN110239459A (en) * | 2019-06-26 | 2019-09-17 | 重庆长安汽车股份有限公司 | A kind of descending auxiliary functional switch control system and method |
| CN110370940A (en) * | 2019-06-19 | 2019-10-25 | 四川野马汽车股份有限公司 | A kind of abrupt slope is slow to drop constant speed cruising system and method |
| CN110641457A (en) * | 2019-10-12 | 2020-01-03 | 西安主函数智能科技有限公司 | Gradient identification-based control system and method for series-parallel wide-body dump truck |
| CA3054051A1 (en) * | 2018-09-04 | 2020-03-04 | Paccar Inc | Downhill speed control target adaptation based on engine retarder demand |
| CN111186311A (en) * | 2020-01-19 | 2020-05-22 | 江西江铃集团新能源汽车有限公司 | Method and system for controlling steep-slope slow descent of electric automobile |
| CN111376728A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪汽车工业有限公司 | Control method and control system based on steep-slope slow-descent control system and electric vehicle |
| CN111559385A (en) * | 2020-04-08 | 2020-08-21 | 长城汽车股份有限公司 | Vehicle control method and device |
| CN111993903A (en) * | 2020-08-24 | 2020-11-27 | 奇瑞商用车（安徽）有限公司 | Method and system for controlling gradual descent of automobile steep slope |
-
2021
- 2021-11-25 CN CN202111418018.XA patent/CN113911098B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040049409A (en) * | 2002-12-05 | 2004-06-12 | 주식회사 만도 | Hill descent control Apparatus for vehicle |
| CN102991501A (en) * | 2011-09-13 | 2013-03-27 | 福特环球技术公司 | Method and system for vehicle speed control |
| WO2017036491A1 (en) * | 2015-08-28 | 2017-03-09 | Volvo Truck Corporation | A method and a system for controlling vehicle speed |
| CN105857292A (en) * | 2016-04-11 | 2016-08-17 | 中国重汽集团济南动力有限公司 | Downhill constant-speed control system for heavy-duty automobile |
| CN106541941A (en) * | 2016-10-19 | 2017-03-29 | 东风汽车公司 | Automatic Pilot speed control system and method based on high-precision navigation positioning system |
| CN107161128A (en) * | 2017-05-23 | 2017-09-15 | 重庆长安汽车股份有限公司 | A kind of control method of automobile abrupt slope slow-descending system |
| CN109334656A (en) * | 2017-12-27 | 2019-02-15 | 长城汽车股份有限公司 | A kind of control method for vehicle and device |
| CA3054051A1 (en) * | 2018-09-04 | 2020-03-04 | Paccar Inc | Downhill speed control target adaptation based on engine retarder demand |
| CN111376728A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪汽车工业有限公司 | Control method and control system based on steep-slope slow-descent control system and electric vehicle |
| CN110155051A (en) * | 2019-04-30 | 2019-08-23 | 吉林大学青岛汽车研究院 | A kind of truck speed change cruise fuel-economizing controlling method |
| CN110370940A (en) * | 2019-06-19 | 2019-10-25 | 四川野马汽车股份有限公司 | A kind of abrupt slope is slow to drop constant speed cruising system and method |
| CN110239459A (en) * | 2019-06-26 | 2019-09-17 | 重庆长安汽车股份有限公司 | A kind of descending auxiliary functional switch control system and method |
| CN110641457A (en) * | 2019-10-12 | 2020-01-03 | 西安主函数智能科技有限公司 | Gradient identification-based control system and method for series-parallel wide-body dump truck |
| CN111186311A (en) * | 2020-01-19 | 2020-05-22 | 江西江铃集团新能源汽车有限公司 | Method and system for controlling steep-slope slow descent of electric automobile |
| CN111559385A (en) * | 2020-04-08 | 2020-08-21 | 长城汽车股份有限公司 | Vehicle control method and device |
| CN111993903A (en) * | 2020-08-24 | 2020-11-27 | 奇瑞商用车（安徽）有限公司 | Method and system for controlling gradual descent of automobile steep slope |
Non-Patent Citations (3)
| Title |
|---|
| 杨明;: "2011款宝马X3发动机节能启停功能MSA新技术剖析", 汽车维修技师, no. 05 * |
| 王元臣;艾金龙;胡士国;李波;赵秀荣;: "发动机曲轴孔同轴度超差精度调整方法", 中国新技术新产品, no. 10 * |
| 边宁;赵保华;赖锋;刘继峰;陈迹;周剑光;: "基于高速公路的半自动驾驶辅助***的开发与应用", 汽车安全与节能学报, no. 02 * |
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