CN116753299A - Electronic gear shifting control system under domain control architecture and control method thereof - Google Patents
Electronic gear shifting control system under domain control architecture and control method thereof Download PDFInfo
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- CN116753299A CN116753299A CN202310883919.9A CN202310883919A CN116753299A CN 116753299 A CN116753299 A CN 116753299A CN 202310883919 A CN202310883919 A CN 202310883919A CN 116753299 A CN116753299 A CN 116753299A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
- F16H59/10—Range selector apparatus comprising levers
- F16H59/105—Range selector apparatus comprising levers consisting of electrical switches or sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/42—Ratio indicator devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H2061/0459—Smoothing ratio shift using map for shift parameters, e.g. shift time, slip or pressure gradient, for performing controlled shift transition and adapting shift parameters by learning
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses an electronic gear shifting control system under a domain control architecture and a control method thereof, wherein the system comprises the following components: the central domain controller is connected with the CAN-FD bus network of the whole vehicle; the right area controller is connected with the central area controller and is also connected with a stop lever angle sensor, a P-gear key switch and a PRND gear indicator lamp; the front area controller is connected with the central area controller and also connected with the actuator position sensor and the actuator motor; the gear shift control device is characterized in that a gear lever angle sensor, a P gear button switch and a CAN-FD signal are used as input signals, a right area controller is used as an input signal acquisition processing unit for electronic gear shifting and a control execution unit for a gear indicator lamp, a central area controller is used as an algorithm processing unit for electronic gear shifting, and a front area controller is used as an actuator position signal acquisition processing unit and a control execution unit for an electronic gear shifting actuator. The invention does not need independent hardware of the electronic gear shifting controller, and saves the hardware cost of the electronic gear shifting control system.
Description
Technical Field
The invention relates to the technical field of automobile electronics and electrics, in particular to an electronic gear shifting control system under a domain control architecture and a control method thereof.
Background
With the continuous evolution of the automobile electronic and electric architecture, the development of the distributed electronic and electric architecture gradually goes to the central centralized domain control architecture, in the traditional distributed electronic and electric architecture, basically, each function of the automobile has an independent controller (as shown in fig. 1, an electronic gear shifting system block diagram under the distributed architecture is formed by a gear shifting controller, a gear lever angle sensor, a P gear button switch, a finished automobile CAN network, an actuator position sensor, a PRND gear indicator lamp, a gear backlight and an actuator motor), so that hundreds of controller units on the finished automobile are caused, and the problems of high cost of the finished automobile controller, high wire harness cost, complex function change and the like are caused.
Therefore, the electronic and electric architecture of the automobile gradually develops to a central centralized domain control architecture, and the controller hardware of one area is centralized in one controller, so that the cost of the controller can be effectively reduced, the wiring harness cost is reduced, and the function change flexibility is achieved. Based on the domain control architecture, the invention provides an overall solution of the electronic gear shifter control method under the domain control architecture.
Disclosure of Invention
The invention aims to provide an electronic gear shifter control system under a domain control electronic and electric architecture and a control method thereof, so as to solve the problem that no corresponding solution exists under the current domain control electronic and electric architecture, and effectively reduce the hardware cost of an electronic gear shifting controller.
In order to achieve the above purpose, the present invention provides the following technical solutions:
in a first aspect, the present invention provides an electronic shift control system under a domain control architecture, including:
the central domain controller is connected with the CAN-FD bus network of the whole vehicle;
the right area controller is connected with the central area controller through a CAN-FD bus, and is also connected with a stop lever angle sensor, a P-gear key switch and a PRND gear indicator lamp;
the front area controller is connected with the central domain controller through a CAN-FD bus and is also connected with an actuator position sensor and an actuator motor;
the gear lever angle sensor, the P-gear button switch and the CAN-FD signal are used as input signals, the right area controller is used as an input signal acquisition processing unit for electronic gear shifting and a control execution unit for a gear indicator lamp, the central area controller is used as an algorithm processing unit for electronic gear shifting, and the front area controller is used as an actuator position signal acquisition processing unit and a control execution unit for an electronic gear shifting actuator.
As a further scheme of the system, the stop lever angle sensor adopts a PWM output type sensor.
As a further scheme of the system, the P-gear key switch acquires the P-gear key switch value through ADC acquisition.
As a further aspect of the system of the present invention, the right zone controller is further connected to a gear backlight.
In a second aspect, the present invention further provides a method for controlling electronic gear shifting under a domain control architecture, which is implemented by using the electronic gear shifting control system under a domain control architecture as described above, where the method includes:
the right area controller periodically collects a stop lever angle sensor value, a P-gear key switch value and receives a finished automobile CAN-FD signal;
the right area controller outputs a stop lever angle sensor value and a P-gear key switch value through the CAN-FD bus;
the central domain controller receives a stop lever angle sensor value, a P-gear key switch value and a whole vehicle CAN-FD signal through a CAN-FD bus and judges whether a gear change requirement exists at present;
if the gear change requirement exists, the central domain controller outputs a new gear value to the right domain controller and the front domain controller through the CAN-FD bus, the right domain controller controls a gear indicator lamp corresponding to the new gear value to be lightened, and the front domain controller controls an actuator motor to operate to a new gear position; if the gear change requirement does not exist, the gear change is directly ended.
As a further aspect of the method of the present invention, the bar angle sensor value is embodied by a PWM signal.
As a further scheme of the method, the P-gear key switch value is acquired through ADC acquisition.
As a further scheme of the method, the right area controller outputs PWM signals with different duty ratios to the central area controller every time the driver shifts one position, the central area controller receives the PWM value of the stop lever angle sensor, the P-gear key switch value and the CAN-FD signal of the whole vehicle, and the position of the shifting mechanism of the driver is determined according to the different PWM duty ratios, wherein the shifting mechanism comprises F1, F2, B1, B2 and F2, wherein F1 represents the forward two positions, B1 represents the backward one position, and B2 represents the backward two positions.
As a further scheme of the method, the central domain controller judges whether the gear change requirement exists currently through preset rules, wherein the preset rules are as follows:
if the current gear is any RND gear, the central domain controller detects that a driver presses a P gear button and the vehicle speed is smaller than a certain value, and the central domain controller outputs a new gear P gear button switch value to the right area controller and the front area controller;
if the current gear is the P gear, the central domain controller detects that the driver shifts to F2 and the brake is pressed down, and the central domain controller outputs a new gear R gear to the right area controller and the front area controller;
if the current gear is N gear or D gear and the central domain controller detects that the gear shifting position of the driver is F2, the central domain controller outputs a new gear R gear to the right area controller and the front area controller.
If the current gear is the P gear, the central domain controller detects that the gear shifting position of the driver is B1 and the brake is treaded down, and then the central domain controller outputs a new gear N gear to the right area controller and the front area controller;
if the current gear is R gear and the central domain controller detects that the gear shifting position of the driver is B1, the central domain controller outputs a new gear N gear to the right area controller and the front area controller;
if the current gear is the D gear, the central domain controller detects that the gear shifting position of the driver is F1 and the vehicle speed is smaller than a certain value, and the central domain controller outputs a new gear N gear to the right area controller and the front area controller;
if the current gear is the P gear, the central domain controller detects that the gear shifting position of the driver is B2 and the brake is treaded down, and then the central domain controller outputs a new gear D gear to the right area controller and the front area controller;
if the current gear is R gear or N gear and the central domain controller detects that the gear shifting position of the driver is B2, the central domain controller outputs a new gear D gear to the right area controller and the front area controller.
By adopting the technical scheme, the invention has the following beneficial effects: the electronic gear shifting control method under the domain control architecture effectively provides a solution of electronic gear shifting control under the current centralized domain control architecture, does not need independent electronic gear shifting controller hardware, and saves the hardware cost of an electronic gear shifting control system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of an electronic shift control system under a prior art distributed architecture.
Fig. 2 is a block diagram of an electronic shift control system under a domain control architecture according to an embodiment of the present invention.
Fig. 3 is a control flow chart of the electronic gear shift control system under the domain control architecture according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Before describing the specific embodiments of the present invention, for convenience in understanding the technical solutions of the present invention, some terms appearing in the technical solutions are explained as follows:
(1) ADC: is an abbreviation of Analog to Digital Converter, chinese is analog-to-digital converter for effecting conversion of an analog signal to a digital signal.
(2) CAN: the abbreviation Controller Area Network is that Chinese is a controller area network, and the automobile CAN bus is equivalent to the central nervous system of an automobile and mainly used for transmitting data.
CAN-FD: in automobile manufacture, a CAN bus is more commonly used, the transmission rate of the CAN bus is 1Mbit/s, the required transmission rate cannot be achieved under specific conditions, the CAN-FD bus is developed on the basis, that is to say, the CAN-FD is an upgrade version of the CAN bus, the CAN bus CAN be downward compatible with the CAN bus after being upgraded, and only the original CAN controller needs to be replaced.
(3) PRND gear: common gear in automatic fender motorcycle type, wherein:
p is a Parking gear (park), after the automobile is stopped, the automobile is braked to prevent movement by hanging the automobile in P, and the P is different from the N in that the power output is interrupted;
r is a Reverse gear (Reverse), which can be engaged when the vehicle is stopped;
n is Neutral, the vehicle is stopped from moving by temporarily stopping and engaging the gear, and the power is not interrupted;
d is a forward gear (Drive), and the most common gear can be completed through throttle control when the gear needs to be lifted.
(4) PWM: the method is Pulse width modulation, chinese is pulse width modulation, is an analog control mode, and modulates bias of a base electrode or a grid electrode of a transistor according to corresponding load change to change on time of the transistor or the MOS transistor, so that output of the switching regulated power supply is changed.
In order to meet the demands of users for comfort, safety, and automatic driving functions, the number of vehicle-mounted ECUs (electronic control units) is increasing. However, the increase in the number of ECUs also presents additional challenges for the vehicle manufacturer. Thus, most automobile manufacturers worldwide are transitioning from traditional distributed ECU architectures to domain or area-based ECU architectures.
In a distributed architecture, where all functions are closely interactive, it is difficult to manage the complexity and real-time of the system, the domain control architecture aims to integrate the decentralized control links into a single large ECU. For example, on a new energy vehicle, a whole vehicle controller, a battery management system and a motor controller are integrated into one controller.
As shown in fig. 2, a block diagram of an electronic gear shift control system under a domain control architecture according to an embodiment of the present invention includes:
the central domain controller is connected with the CAN-FD bus network of the whole vehicle;
the right area controller is connected with the central area controller through a CAN-FD bus, and is also connected with a stop lever angle sensor, a P (parking) stop button switch, a PRND stop indicator light and a stop backlight light;
the front area controller is connected with the central domain controller through a CAN-FD bus and is also connected with the actuator position sensor and the actuator motor;
the system takes a stop lever angle sensor, a P-gear button switch and a CAN-FD signal as input signals, a right area controller as input signal acquisition processing of electronic gear shifting, a control execution unit of a PRND gear indicator lamp and a gear backlight lamp, a central area controller as an algorithm processing unit of electronic gear shifting, and a front area controller as an actuator position signal acquisition processing and control execution unit of an electronic gear shifting actuator.
Therefore, based on the domain control architecture, the invention provides an overall solution of the electronic gear shifter control method under the domain control architecture, adopts a central centralized domain control architecture, and concentrates the controller hardware (the right domain controller and the front domain controller) of one domain into one controller (the central domain controller), thereby reducing the cost of the controller, reducing the harness cost and achieving the function change flexibility.
The method solves the problem that no corresponding solution exists under the current domain control electronic electric architecture, and effectively reduces the hardware cost of the electronic gear shift controller.
Furthermore, the stop lever angle sensor adopts a PWM output type sensor, and the value of the stop lever angle sensor is embodied by PWM signals. The P-gear key switch value is acquired through ADC acquisition.
Fig. 3 is a control flow chart of the electronic gear shift control system under the domain control architecture of the present invention, which is implemented as follows:
step one: and (3) the system is electrified and initialized, the whole system is ready to work, the electronic gear shifting system is in a P gear by default, the actuator is in a P gear position, the P gear indicator lamp is lighted, and the backlight lamp is lighted.
Step two: the right area controller periodically collects the value of a stop lever angle sensor, a P-gear key switch signal and receives a CAN-FD signal, the value of the stop lever angle sensor in the embodiment of the invention is embodied by a PWM signal, the P-gear key switch signal is collected and obtained by an ADC, and the stop signal, the headlight state signal and the like of the central area controller are received.
Step three: the right area controller converts the acquired sensor value of the stop lever angle and the P-gear key switch signal into CAN-FD signals to be output to the central area controller, and meanwhile, the PRND gear indicator lamp and the gear backlight lamp are controlled to be lightened according to the received CAN-FD signal; specifically, whether the angle of the stop lever changes can be judged according to the value of the stop lever angle sensor, and then the position of the stop lever in the PRND gear can be judged according to the relation between the prestored angle change value and the corresponding gear, so that the indication lamp of the corresponding gear is controlled to be lighted, and the corresponding relation between the angle value of the stop lever and the corresponding gear can be prestored in the right area controller.
Step four: the central domain controller receives a stop lever angle sensor value, a P-gear key switch value and a whole vehicle CAN signal of the right domain controller through the CAN-FD bus, judges whether a gear conversion requirement exists currently through a preset rule, executes the step five if the gear conversion requirement exists, and executes the step six if the gear conversion requirement does not exist.
Step five: if the gear change requirement exists, the central domain controller outputs a new gear value to the right area controller and the front area controller, the right area controller controls the new gear indicator lamp to be lightened according to the new gear value, and the front area controller controls the actuator to reach the new gear position through the closed loop according to the new gear value, and at the moment, one judging period is ended. Further, when the front area controller adjusts the actuator to a new gear position through the actuator motor, the position of the actuator is acquired in real time through the actuator position sensor, so that the actuator can be ensured to accurately operate to the new gear position.
Step six: if the gear change requirement is not met, the right area controller controls the gear indicator lamp and the gear backlight lamp to be turned on unchanged, the front area controller controls the position of the actuator to be kept unchanged, and at the moment, a judging period is ended.
Further, the right area controller outputs PWM signals with different duty ratios to the central area controller every time the driver shifts a position, the central area controller receives PWM values of the stop lever angle sensor, the P-gear key switch value and the CAN-FD signal of the whole vehicle, and the position of the shifting mechanism of the driver is determined according to the different PWM duty ratios, wherein the shifting mechanism generally comprises F1, F2, B1, B2 and F2, F1 represents the forward two positions, F1 represents the forward one position, B1 represents the backward one position, and B2 represents the backward two positions.
In the fourth step, the central domain controller judges whether there is a gear change requirement currently according to a preset rule, and in cooperation with the preset rule, a specific embodiment of the electronic gear shift control method under the domain control architecture of the present invention is provided below. The implementation steps are as follows:
step1: the system is electrified and initialized, the whole system is ready to work, the electronic gear shifting system is in a P gear by default, the actuator is in a P gear position, a P gear indicator lamp is lighted, and a backlight lamp is lighted;
step2: the right area controller periodically collects a stop lever angle sensor value, a P key switch signal and a receiving CAN signal, wherein the stop lever angle sensor value is embodied by a PWM signal, the P key switch signal is collected and obtained by an ADC, and the stop signal, the headlight state signal and the like of the central area controller are received;
step3: the right area controller converts the acquired sensor value of the stop lever angle and the P key switch signal into a CAN-FD signal to be output to the central area controller, and simultaneously processes and controls the backlight lamp of the indicator lamp to be lightened according to the received CAN-FD signal;
step4: the central domain controller receives a stop lever angle sensor value and a P key switch value of the right domain controller through CAN-FD to determine the current situation of shifting the position F1\F2\B1\B2 and the P key action of a shifting mechanism of a driver;
step5: if the current gear is any RND gear, the central domain controller detects that the driver presses the P key and the vehicle speed is smaller than a certain value (1.5 km/h is taken as an example in the embodiment), the central domain controller outputs a new gear P gear value to the right area controller and the front area controller, and the Step (Step 13) is executed; otherwise, judging that the gear is not a new gear, and executing the Step (Step 14);
step6: if the current gear is the P gear, the central domain controller detects that the driver shifts to F2 and the brake is treaded down, the central domain controller outputs a new gear R gear to the right area controller and the front area controller, and the Step (Step 13) is executed; otherwise, judging that the gear is not a new gear, and executing the Step (Step 14);
step7: if the current gear is N or D, the central domain controller detects that the shift position of the driver is F2, the central domain controller outputs a new gear R to the right area controller and the front area controller, and the Step (Step 13) is executed; otherwise, judging that the gear is not a new gear, and executing the Step (Step 14);
step8: if the current gear is the P gear, the central domain controller detects that the gear shifting position of the driver is B1 and the brake is treaded down, the central domain controller outputs a new gear N gear to the right area controller and the front area controller, and the Step (Step 13) is executed; otherwise, judging that the gear is not a new gear, and executing the Step (Step 14);
step9: if the current gear is R gear and the central domain controller detects that the gear shifting position of the driver is B1, the central domain controller outputs a new gear N gear to the right area controller and the front area controller, and the Step (Step 13) is executed; otherwise, judging that the gear is not a new gear, and executing the Step (Step 14);
step10: if the current gear is the D gear, the central domain controller detects that the shift position of the driver is F1 and the vehicle speed is smaller than a certain value (1.5 km/h is taken as an example in the embodiment), the central domain controller outputs a new gear N gear to the right area controller and the front area controller, and the Step (Step 13) is executed; otherwise, judging that the gear is not a new gear, and executing the Step (Step 14);
step11: if the current gear is the P gear, the central domain controller detects that the gear shifting position of the driver is B2 and the brake is treaded down, the central domain controller outputs a new gear D gear to the right area controller and the front area controller, and the Step (Step 13) is executed; otherwise, judging that the gear is not a new gear, and executing the Step (Step 14);
step12: if the current gear is R gear or N gear, the central domain controller detects that the gear shifting position of the driver is B2, the central domain controller outputs a new gear D gear to the right area controller and the front area controller, and the Step (Step 13) is executed; otherwise, judging that the gear is not a new gear, and executing the Step (Step 14);
step13: the right area controller controls the new gear indicator lamp to be lightened according to the new gear value, controls the light brightness according to different modes (a day and night mode is judged according to a far and near light starting state in a CAN-FD signal) and controls the actuator to reach the new gear position through a closed loop according to the front area controller of the new gear value, and one judging period is ended at the moment;
step14: if the gear change requirement is not met, the right area controller controls the backlight lamp of the indicator lamp to be turned on unchanged, the front area controller controls the position of the actuator to be kept unchanged, and at the moment, a judging period is ended
The electronic gear shifting control system under the domain control architecture and the control method thereof effectively provide a solution of electronic gear shifting control under the current centralized domain control architecture, do not need independent electronic gear shifting controller hardware, and save the hardware cost of the electronic gear shifting control system.
Although embodiments of the invention have been shown and described, the detailed description is to be construed as exemplary only and is not limiting of the invention as the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and modifications, substitutions, variations, etc. may be made in the embodiments as desired by those skilled in the art without departing from the principles and spirit of the invention, provided that such modifications are within the scope of the appended claims.
Claims (9)
1. An electronic shift control system under a domain control architecture, comprising:
the central domain controller is connected with the CAN-FD bus network of the whole vehicle;
the right area controller is connected with the central area controller through a CAN-FD bus, and is also connected with a stop lever angle sensor, a P-gear key switch and a PRND gear indicator lamp;
the front area controller is connected with the central domain controller through a CAN-FD bus and is also connected with an actuator position sensor and an actuator motor;
the gear lever angle sensor, the P-gear button switch and the CAN-FD signal are used as input signals, the right area controller is used as an input signal acquisition processing unit for electronic gear shifting and a control execution unit for a gear indicator lamp, the central area controller is used as an algorithm processing unit for electronic gear shifting, and the front area controller is used as an actuator position signal acquisition processing unit and a control execution unit for an electronic gear shifting actuator.
2. A domain controlled architecture electronic shift control system as claimed in claim 1, wherein the bar angle sensor is a PWM output type sensor.
3. The electronic shift control system under a domain control architecture of claim 1, wherein the P-speed key switch obtains a P-speed key switch value through ADC acquisition.
4. The under-domain-control-architecture electronic shift control system of claim 1, wherein the right zone controller is further coupled to a gear backlight.
5. A domain controlled under-architecture electronic shift control method implemented using the domain controlled under-architecture electronic shift control system according to any one of claims 1 to 4, characterized in that the method comprises:
the right area controller periodically collects a stop lever angle sensor value, a P-gear key switch value and receives a finished automobile CAN-FD signal;
the right area controller outputs a stop lever angle sensor value and a P-gear key switch value through the CAN-FD bus;
the central domain controller receives a stop lever angle sensor value, a P-gear key switch value and a whole vehicle CAN-FD signal through a CAN-FD bus and judges whether a gear change requirement exists at present;
if the gear change requirement exists, the central domain controller outputs a new gear value to the right domain controller and the front domain controller through the CAN-FD bus, the right domain controller controls a gear indicator lamp corresponding to the new gear value to be lightened, and the front domain controller controls an actuator motor to operate to a new gear position; if the gear change requirement does not exist, the gear change is directly ended.
6. A domain controlled architecture electronic shift control method as claimed in claim 5, characterized in that the bar angle sensor value is embodied by a PWM signal.
7. The method for electronic shift control under a domain control architecture as set forth in claim 6, wherein said P-gear key switch value is acquired through ADC acquisition.
8. The method for electronic shift control under a domain control architecture according to claim 7, wherein the right domain controller outputs a PWM signal with a different duty cycle to the central domain controller every time the driver shifts one position, the central domain controller receives the PWM value of the bar angle sensor, the P-shift key switch value and the CAN-FD signal, and determines the position of the shifting mechanism of the driver according to the different PWM duty cycles, wherein F1, F2, B1, B2, F2 represent two forward positions, F1 represents a forward position, B1 represents a backward position, and B2 represents two backward positions.
9. The method for electronic shift control under a domain control architecture as set forth in claim 8, wherein the central domain controller determines whether there is a current gear shift requirement according to a preset rule:
if the current gear is any RND gear, the central domain controller detects that a driver presses a P gear button and the vehicle speed is smaller than a certain value, and the central domain controller outputs a new gear P gear button switch value to the right area controller and the front area controller;
if the current gear is the P gear, the central domain controller detects that the driver shifts to F2 and the brake is pressed down, and the central domain controller outputs a new gear R gear to the right area controller and the front area controller;
if the current gear is N gear or D gear and the central domain controller detects that the gear shifting position of the driver is F2, the central domain controller outputs a new gear R gear to the right area controller and the front area controller.
If the current gear is the P gear, the central domain controller detects that the gear shifting position of the driver is B1 and the brake is treaded down, and then the central domain controller outputs a new gear N gear to the right area controller and the front area controller;
if the current gear is R gear and the central domain controller detects that the gear shifting position of the driver is B1, the central domain controller outputs a new gear N gear to the right area controller and the front area controller;
if the current gear is the D gear, the central domain controller detects that the gear shifting position of the driver is F1 and the vehicle speed is smaller than a certain value, and the central domain controller outputs a new gear N gear to the right area controller and the front area controller;
if the current gear is the P gear, the central domain controller detects that the gear shifting position of the driver is B2 and the brake is treaded down, and then the central domain controller outputs a new gear D gear to the right area controller and the front area controller;
if the current gear is R gear or N gear and the central domain controller detects that the gear shifting position of the driver is B2, the central domain controller outputs a new gear D gear to the right area controller and the front area controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310883919.9A CN116753299A (en) | 2023-07-18 | 2023-07-18 | Electronic gear shifting control system under domain control architecture and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310883919.9A CN116753299A (en) | 2023-07-18 | 2023-07-18 | Electronic gear shifting control system under domain control architecture and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN116753299A true CN116753299A (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310883919.9A Pending CN116753299A (en) | 2023-07-18 | 2023-07-18 | Electronic gear shifting control system under domain control architecture and control method thereof |
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| Country | Link |
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| CN (1) | CN116753299A (en) |
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- 2023-07-18 CN CN202310883919.9A patent/CN116753299A/en active Pending
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