CN111452793A - Unmanned vehicle gear control method, unmanned vehicle and storage medium - Google Patents
Unmanned vehicle gear control method, unmanned vehicle and storage medium Download PDFInfo
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- CN111452793A CN111452793A CN202010336879.2A CN202010336879A CN111452793A CN 111452793 A CN111452793 A CN 111452793A CN 202010336879 A CN202010336879 A CN 202010336879A CN 111452793 A CN111452793 A CN 111452793A
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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
- B60W30/18—Propelling the vehicle
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
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Abstract
The invention belongs to the field of unmanned vehicles, unmanned driving or automatic driving, and provides an unmanned vehicle gear control method, an unmanned vehicle and a storage medium, wherein the unmanned vehicle gear control method comprises the following steps: acquiring an unmanned vehicle instruction; and controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor. The gear control is carried out by adopting the method, so that the method is more convenient and safer.
Description
Technical Field
The invention relates to the field of unmanned vehicles, in particular to an unmanned vehicle gear control method, an unmanned vehicle and a storage medium.
Background
With the development of science and technology, the unmanned vehicle slowly enters the life of people, and the current gear control method of the unmanned vehicle is greatly different from the gear control method of the common vehicle driven by people. Unmanned driving relates to the technical fields of environment perception, positioning, decision planning, execution control and the like, wherein vehicle motion control is used as a vehicle end execution layer of an intelligent driving vehicle system and is directly related to the final realization of an intelligent driving function. The vehicle motion control is the most central part in the execution control, and the vehicle speed is controlled to ensure the stable, safe and comfortable running of the vehicle.
In order to ensure smooth traveling of the unmanned vehicle, if the unmanned vehicle autonomously stops at a red light and autonomously travels at a green light, the gear of the unmanned vehicle needs to be controlled. In the prior art, a manual switch is required to be added for controlling a vehicle driven by a person, and the control method cannot be realized for an unmanned vehicle. For unmanned driving, the current unmanned vehicle-mounted gear control needs to be designed according to a vehicle-mounted network architecture, and different network architectures have different gear control.
Disclosure of Invention
In order to solve the technical problems, the invention provides a gear control method for an unmanned vehicle, the unmanned vehicle and a storage medium, which CAN use a CAN network to communicate and realize gear control of the unmanned vehicle.
In one aspect, a gear control method for an unmanned vehicle is provided, which includes:
acquiring an unmanned vehicle instruction;
and controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor.
Further, the unmanned vehicle instructions include: requesting release/execution of a parking command and requesting a gear position command.
Further, the gear control of the vehicle according to the command, the vehicle speed or the parking motor state comprises:
pre-judging a vehicle target gear:
if the parking instruction is the request for parking, the target gear of the vehicle is a P gear;
and if the parking instruction is the request for releasing the parking, the target gear of the vehicle is the request gear instruction.
Further, the gear control of the vehicle according to the command, the vehicle speed or the parking motor state comprises at least one of the following steps:
when the current gear is P gear and the ramp auxiliary function is activated, the target gear is not P gear or the current state of the parking motor is a parking releasing state, adjusting the gear to be N gear;
or when the current gear is P gear, the ramp auxiliary function is not activated, and the current state of the parking motor is a parking releasing state, the gear is adjusted to be N gear;
or when the current gear is the N gear and the parking motor is in a parked state or the parking is finished, adjusting the gear to be the P gear;
or when the current gear is the N gear, the target gear is the D gear and the vehicle speed is less than 2km/h, adjusting the gear to be the D gear;
or when the current gear is the N gear, the target gear is the R gear and the vehicle speed is less than 2km/h, adjusting the gear to be the R gear;
or the current gear is the D gear, the target gear is the R, N or P gear, or the actual feedback state of the parking motor is in parking or when the parking is performed, the gear is adjusted to be the N gear;
or the current gear is the R gear, the target gear is the D, N or P gear, or the actual feedback state of the parking motor is in parking or parked, the gear is adjusted to be the N gear.
In another aspect, the present invention also provides an unmanned vehicle, including:
the unmanned industrial personal computer is used for sending an unmanned vehicle instruction;
a vehicle speed detector for detecting a speed of the unmanned vehicle;
the parking controller is used for controlling the state of the parking motor;
and the vehicle control unit is used for receiving the unmanned vehicle instruction and controlling the switching of gears according to the unmanned vehicle instruction, the speed of the unmanned vehicle or the state of the parking motor.
Further, the unmanned vehicle command comprises a release/parking request command and a gear position request command.
Further, the parking controller comprises a ramp assisting module, and when the ramp assisting module is activated, the parking controller detects that the required torque sent by the whole vehicle controller is larger than a threshold value, and releases parking.
Further, the controlling the gear switching according to the unmanned vehicle instruction, the speed of the unmanned vehicle or the parking motor state comprises:
pre-judging a vehicle target gear:
if the unmanned vehicle instruction received by the vehicle control unit is a request for parking, the target gear of the vehicle is P gear;
and if the command of the unmanned vehicle received by the vehicle control unit is a command for requesting to release parking, the target gear of the vehicle is the command for requesting the gear.
Further, the controlling the gear switching according to the unmanned vehicle instruction, the speed of the unmanned vehicle or the state of the parking motor comprises at least one of the following steps:
when the current gear is P gear, the ramp auxiliary module is activated, the target gear is not P gear or the current state of the parking motor is a parking releasing state, and the vehicle control unit switches the gear to N gear;
or when the current gear is P gear, the ramp auxiliary module is not activated, and the current state of the parking motor is a parking releasing state, the vehicle control unit switches the gear to be N gear;
or when the current gear is N gear and the parking motor is in a parked state or the parking is finished, the vehicle control unit switches the gear to P gear;
or when the current gear is the N gear, the target gear is the D gear and the vehicle speed is less than 2km/h, the whole vehicle controller switches the gear to the D gear;
or when the current gear is the N gear, the target gear is the R gear and the vehicle speed is less than 2km/h, the whole vehicle controller switches the gear to the R gear;
or the current gear is a D gear, the target gear is R, N or a P gear, or the parking motor is in a parking state or is parked, the vehicle control unit switches the gear to an N gear;
or the current gear is the R gear, the target gear is the D, N or P gear, or the actual state of the parking motor is in parking or when the parking motor is parked, the vehicle control unit switches the gear to the N gear.
In another aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the above-mentioned gear control method for an unmanned vehicle.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a flowchart of shift position control of one embodiment of the invention.
Fig. 2 is a schematic block diagram of an unmanned vehicle according to another embodiment of the present invention.
Fig. 3 is a flow chart of a top cover installation method according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the described embodiments of the invention, belong to the scope of protection of the invention.
Fig. 1 is a flowchart of gear shift control according to an embodiment of the present invention, and as shown in fig. 1, there is provided an unmanned vehicle gear shift control method including: acquiring an unmanned vehicle instruction; and controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor.
Specifically, the instruction is from the unmanned vehicle, and may be a signal given by the completely unmanned vehicle according to road conditions, surrounding environments and the like, or a signal sent by the remote driving end by judging the environment where the unmanned vehicle is located.
The gear control method of the unmanned vehicle is safer, simpler and more convenient, the gear control is accurate, and the gear control method is realized without complex algorithm and network architecture.
In another embodiment of the present invention, the unmanned vehicle instruction comprises: requesting release/execution of a parking command and a gear position requesting command.
Specifically, the instruction refers to an instruction for sending a parking request, wherein the parking instruction comprises an instruction for releasing the parking and an instruction for parking; also included is a command to request a gear, where the gear command may be any one of P (park), D (forward), N (neutral), or R (reverse).
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: pre-judging a vehicle target gear: if the parking instruction is the request for parking, the target gear of the vehicle is a P gear; and if the parking instruction is the request for releasing parking, the target gear of the vehicle is the request gear instruction.
The gear pre-judgment can be carried out by combining the actual state of the vehicle, and the state of the vehicle cannot be monitored in real time when the unmanned vehicle sends the gear request instruction, so that the gear request instruction sent by the unmanned vehicle may not be executable or is not suitable for being executed at the moment. For example, the command for requesting the gear position sent by the unmanned vehicle is the D gear, but the vehicle has a fault and cannot execute the command for the gear position.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is the P gear and the hill hold function is activated, the target gear is not the P gear, and the gear is adjusted to be the N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is the P gear, the ramp auxiliary function is activated, and the current state of the parking motor is the parking releasing state, the gear is adjusted to be the N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is P gear, the ramp auxiliary function is not activated, and the current state of the parking motor is a parking releasing state, adjusting the gear to be N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is the N gear and the parking motor is in a parked state or the parking is finished, adjusting the gear to be the P gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is the N gear, the target gear is the D gear and the vehicle speed is less than 2km/h, adjusting the gear to be the D gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is the N gear, the target gear is the R gear and the vehicle speed is less than 2km/h, adjusting the gear to be the R gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and if the current gear is the D gear and the target gear is R, N or P gear, the gear is adjusted to be the N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: the current gear is D gear, and the actual feedback state of the parking motor is in parking or when the parking is performed, the gear is adjusted to be N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is the R gear and the target gear is D, N or P gear, adjusting the gear to be the N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: the current gear is R gear, and the actual feedback state of the parking motor is in parking or when the parking is performed, the gear is adjusted to be N gear.
The current gears can be obtained through the whole vehicle controller; the target gear is an actual target gear judged by the vehicle controller, and is not a requested gear; the motor state is the current actual feedback state. The method has accurate gear control, so that the driving motor can be controlled according to the gear.
As shown in fig. 2, another embodiment of the present invention further provides an unmanned vehicle, including an unmanned manual controller for sending an unmanned vehicle command; a vehicle speed detector for detecting a speed of the unmanned vehicle; the parking controller is used for controlling the state of the parking motor; and the vehicle control unit is used for receiving the unmanned vehicle instruction and controlling gear switching according to the unmanned vehicle instruction, the speed of the unmanned vehicle or the state of the parking motor.
The vehicle speed detector can be a vehicle speed obtained by converting the motor rotating speed reported by the motor controller into a vehicle speed, or can be an independent vehicle speed detector as long as the vehicle speed can be detected. The unmanned industrial personal computer, the parking controller and the vehicle controller communicate through a CAN network.
In another embodiment of the present invention, the unmanned vehicle command includes a release/park request command and a shift position request command.
In another embodiment of the invention, the parking controller comprises a slope auxiliary module, and when the slope auxiliary module is activated, the parking controller detects that the required torque sent by the whole vehicle controller is greater than a threshold value, and releases parking.
Specifically, when the parking motor controller detects that the vehicle is on a slope, a slope auxiliary function activation flag bit is sent to the whole vehicle controller, at this time, the whole vehicle controller sends a parking release instruction to the parking controller, and then the parking motor controller does not respond, and when the parking motor controller detects that a required torque sent by the whole vehicle controller is larger than a certain value, the parking is released.
In another embodiment of the present invention, the controlling the switching of the gear according to the unmanned vehicle command, the speed of the unmanned vehicle, or the state of the parking motor comprises: pre-judging a vehicle target gear: if the unmanned vehicle instruction received by the vehicle control unit is a request for parking, the target gear of the vehicle is P gear; and if the command of the unmanned vehicle received by the vehicle control unit is a command for requesting to release parking, the target gear of the vehicle is the command for requesting the gear.
Specifically, the gear instruction requested by the unmanned vehicle needs to be judged by the vehicle control unit, that is, after the vehicle control unit receives the instruction of the unmanned vehicle, the vehicle control unit needs to judge whether the instruction of executing the unmanned vehicle is satisfied, if the unmanned controller sends a parking instruction to the vehicle control unit, the vehicle control unit judges that the current vehicle has a level 1 fault or a level 2 fault, and the parking instruction cannot be forwarded and the target gear cannot be confirmed.
In another embodiment of the present invention, the switching of the speed of the unmanned vehicle or the parking motor state control gear comprises: and when the current gear is the P gear, activating a ramp auxiliary function, and the target gear is not the P gear, and the vehicle control unit switches the gear to the N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is P gear, the ramp auxiliary function is activated, and the current state of the parking motor is a parking releasing state, the vehicle control unit switches the gear to be N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is P gear, the ramp auxiliary function is not activated, and the current state of the parking motor is a parking releasing state, the vehicle control unit switches the gear to be N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is N gear and the parking motor is in a parked state or the parking is finished, the vehicle control unit switches the gear to P gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is the N gear, the target gear is the D gear and the vehicle speed is less than 2km/h, switching the gear to the D gear by the vehicle control unit.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and when the current gear is the N gear, the target gear is the R gear and the vehicle speed is less than 2km/h, switching the gear to the R gear by the vehicle control unit.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: and if the current gear is the D gear and the target gear is R, N or P gear, the vehicle control unit switches the gear to the N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: the current gear is D gear, and the actual feedback state of the parking motor is in parking or when the parking is performed, the vehicle control unit switches the gear to N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: when the current gear is the R gear and the target gear is the D, N or P gear, the vehicle control unit switches the gear to the N gear.
In another embodiment of the present invention, the controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor comprises: when the current gear is R gear and the actual state of the parking motor is in parking or is parked, the whole vehicle controller switches the gear to be N gear.
This unmanned vehicle can make gear control more accurate and safe through controlling driving motor according to the gear.
Another embodiment of the present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the method for controlling a gear position of an unmanned vehicle as described above.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the form and details of the present invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An unmanned vehicle gear control method is characterized by comprising the following steps:
acquiring an unmanned vehicle instruction;
and controlling the gear of the vehicle according to the command, the vehicle speed or the state of the parking motor.
2. The unmanned vehicle gear control method of claim 1, wherein the unmanned vehicle instructions comprise:
requesting release/execution of a parking command and a gear position requesting command.
3. The unmanned vehicle gear control method according to claim 2, wherein the gear control of the vehicle according to the command, the vehicle speed, or the parking motor state includes:
pre-judging a vehicle target gear:
if the parking instruction is the request for parking, the target gear of the vehicle is a P gear;
and if the parking instruction is the request for releasing the parking, the target gear of the vehicle is the request gear instruction.
4. The unmanned vehicle gear control method of claim 3, wherein said gear control of the vehicle in accordance with the command, vehicle speed, or parking motor state comprises at least one of:
when the current gear is P gear, the ramp auxiliary function is activated, and the target gear is not P gear or the current state of the parking motor is a parking releasing state, adjusting the gear to be N gear;
or when the current gear is P gear, the ramp auxiliary function is not activated, and the current state of the parking motor is a parking releasing state, the gear is adjusted to be N gear;
or when the current gear is the N gear and the parking motor is in a parked state or the parking is finished, adjusting the gear to be the P gear;
or when the current gear is the N gear, the target gear is the D gear and the vehicle speed is less than 2km/h, adjusting the gear to be the D gear;
or when the current gear is the N gear, the target gear is the R gear and the vehicle speed is less than 2km/h, adjusting the gear to be the R gear;
or the current gear is the D gear, the target gear is the R, N or P gear, or the actual feedback state of the parking motor is in parking or when the parking is performed, the gear is adjusted to be the N gear;
or the current gear is the R gear, the target gear is D, N or the P gear, or the parking motor state is parking or when parking is performed, the gear is adjusted to be the N gear.
5. An unmanned vehicle, comprising:
the unmanned industrial personal computer is used for sending an unmanned vehicle instruction;
a vehicle speed detector for detecting a speed of the unmanned vehicle;
the parking controller is used for controlling the state of the parking motor;
and the vehicle control unit is used for receiving the unmanned vehicle instruction and controlling the switching of gears according to the unmanned vehicle instruction, the speed of the unmanned vehicle or the state of the parking motor.
6. The unmanned vehicle of claim 5,
the unmanned vehicle command comprises a command for releasing/parking and a command for requesting a gear position.
7. The unmanned vehicle of claim 6, wherein the parking controller comprises a hill assist module that deactivates the parking when the parking controller detects that a requested torque sent by the vehicle control unit is greater than a threshold value after the hill assist module is activated.
8. The unmanned vehicle of claim 6, wherein the controlling the switching of the gear according to the unmanned vehicle command, the speed of the unmanned vehicle, or the parking motor state comprises:
pre-judging a vehicle target gear:
if the unmanned vehicle instruction received by the vehicle control unit is a request for parking, the target gear of the vehicle is P gear;
and if the command of the unmanned vehicle received by the vehicle control unit is a command for requesting to release parking, the target gear of the vehicle is the command for requesting the gear.
9. The unmanned vehicle of claim 8, wherein the controlling the switching of the gear according to the unmanned vehicle command, the unmanned vehicle speed, or the parking motor state comprises at least one of:
when the current gear is P gear, the ramp auxiliary module is activated, the target gear is not P gear or the current state of the parking motor is a parking releasing state, and the vehicle control unit switches the gear to N gear;
or when the current gear is P gear, the ramp auxiliary module is not activated, and the current state of the parking motor is a parking releasing state, the vehicle control unit switches the gear to be N gear;
or when the current gear is N gear and the parking motor is in a parked state or the parking is finished, the vehicle control unit switches the gear to P gear;
or when the current gear is the N gear, the target gear is the D gear and the vehicle speed is less than 2km/h, the vehicle controller switches the gear to the D gear;
or when the current gear is the N gear, the target gear is the R gear and the vehicle speed is less than 2km/h, the vehicle controller switches the gear to the R gear;
or the current gear is a D gear, the target gear is R, N or a P gear, or the parking motor is in a parking state or is parked, the vehicle controller switches the gear to an N gear;
or the current gear is the R gear, the target gear is the D, N or P gear, or the actual state of the parking motor is in parking or when the parking motor is parked, the vehicle control unit switches the gear to the N gear.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the gear shift control method of an unmanned vehicle according to claims 1-4.
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Application publication date: 20200728 |