CN116161109A - Steering pump control strategy implementation method and device and storage medium - Google Patents
Steering pump control strategy implementation method and device and storage medium Download PDFInfo
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- CN116161109A CN116161109A CN202310202802.XA CN202310202802A CN116161109A CN 116161109 A CN116161109 A CN 116161109A CN 202310202802 A CN202310202802 A CN 202310202802A CN 116161109 A CN116161109 A CN 116161109A
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- 238000011217 control strategy Methods 0.000 title claims abstract description 118
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- 238000004590 computer program Methods 0.000 claims description 10
- 238000013507 mapping Methods 0.000 claims description 7
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- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/062—Details, component parts
- B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/065—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by specially adapted means for varying pressurised fluid supply based on need, e.g. on-demand, variable assist
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Power Steering Mechanism (AREA)
Abstract
The invention relates to a steering pump control strategy implementation method, a steering pump control strategy implementation device and a storage medium. In the invention, the rotation speed of the steering pump is used as a variable, the rotation speed control strategy of the steering pump in the first stage is debugged, the rotation speed control strategy of the steering pump in the first stage controls the steering pump according to the state of the whole vehicle, whether the whole vehicle meets the set steering performance is judged, and if not, the debugging is continued; and if so, introducing a steering pump rotating speed generation strategy into a steering pump controller, and entering a second-stage steering pump rotating speed control strategy debugging under the condition that a driving electric signal of a steering pump is used as a variable, wherein the second-stage steering pump rotating speed control strategy debugging configures the relation between the driving electric signal of the steering pump and the output rotating speed of the steering pump through the steering pump rotating speed generation strategy, and stopping the second-stage steering pump rotating speed control strategy debugging when the steering pump controller executes the steering pump rotating speed control strategy by taking the driving electric signal as the variable.
Description
Technical Field
The invention relates to the technical field of automobile steering control strategy configuration, in particular to a steering pump control strategy implementation method, a steering pump control strategy implementation device and a storage medium.
Background
With rapid development of the automobile industry, the comfort level requirement of vehicle operation is higher and higher, and the electric steering pump is favored by various automobile manufacturers due to the advantages of simple structure, easy arrangement, controllability and the like. The main stream type steering system of the commercial vehicle adopts an electric steering pump to assist steering, so as to improve steering operation comfort.
The principle of electric hydraulic power-assisted steering is that a steering controller inverts direct-current voltage of an electric vehicle battery into alternating current and supplies the alternating current to an electric steering pump, so that the electric steering pump works, the electric steering pump drives steering liquid to provide power for a hydraulic power-assisted steering, and the control strategy of the steering pump is that the steering controller only outputs one frequency to enable the electric steering pump to operate at a specified highest rotating speed, so that the steering portability of low-speed running can only be ensured, but when a vehicle runs at a high speed, the steering force of the vehicle is too light, the phenomena such as drifting and the like occur, the steering feel is poor, and unnecessary energy is consumed, so that the control strategy of the steering pump is needed to be optimized, and on the premise of ensuring the portability at a low speed, the steering feel of a user of the high-speed running is also needed to be improved, and the energy consumption is reduced.
Disclosure of Invention
In order to solve the technical problems described above or at least partially solve the technical problems described above, the present invention provides a steering pump control strategy implementation method, a steering pump control strategy implementation device, and a storage medium.
In a first aspect, the present invention provides a steering pump control strategy implementation method, including a two-stage steering pump rotational speed control strategy debugging process, wherein:
under the condition that the rotation speed of the steering pump is taken as a variable, the rotation speed control strategy of the steering pump in the first stage is debugged:
and judging the whole vehicle state by reading the whole vehicle signal, wherein the steering pump rotating speed control strategy in the first stage executes corresponding flow control steering pump according to the whole vehicle state, and in the debugging process of the steering pump rotating speed control strategy in the first stage, the rotating speed of the steering pump is measured through the rotating speed sensor so that the control of the steering pump by the steering pump rotating speed control strategy in the first stage can be realized according to the rotating speed.
When the steering pump rotating speed control strategy of the first stage is executed in a corresponding whole vehicle state, comparing real-time indexes of the whole vehicle with set reference indexes to judge whether the whole vehicle meets set steering performance, and if the whole vehicle does not meet the steering performance, continuing to debug the steering pump rotating speed control strategy of the first stage; if the whole vehicle meets the steering performance, a steering pump rotating speed generation strategy is introduced into a steering pump controller, and the steering pump rotating speed control strategy of the second stage is debugged under the condition that the driving electric signal of the steering pump is used as a variable:
and configuring the relation between the steering pump driving electric signal and the steering pump output rotating speed through the steering pump rotating speed control strategy, detecting whether the steering performance can be met when the steering pump controller executes the steering pump rotating speed control strategy by taking the driving electric signal as a variable, if not, executing the steering pump rotating speed control strategy debugging of the second stage, and if so, completing the control strategy configuration of the steering pump.
Further, the vehicle state is obtained by inference through vehicle parameter signals read by a vehicle controller, and the vehicle parameter signals include but are not limited to: vehicle speed signal, manual brake signal, steering wheel corner signal and gear signal, wherein:
when the vehicle speed signal value is zero, the hand brake signal works and the gear signal is neutral, judging that the whole vehicle state is a state to be operated;
and when the vehicle speed signal value is non-zero, acquiring the steering wheel angle signal, judging that the whole vehicle state is in a straight running state if the steering wheel angle signal value is smaller than a preset steering wheel free travel range, and judging that the whole vehicle state is in a turning running state if the steering wheel angle signal value is larger than the preset steering wheel free travel range.
Further, the steering pump rotation speed control strategies of the first stage and the second stage execute corresponding flow control steering pumps according to the whole vehicle state, and the steering pump rotation speed control strategy comprises the following steps:
in a static waiting operation state, the steering pump rotating speed control strategy of the first stage and the second stage controls the steering pump to stop;
in a straight running state, the steering pump rotating speed control strategies of the first stage and the second stage set the steering pump rotating speed to be a constant value, wherein the constant value is lower than the rated rotating speed of the steering pump;
and in the turning driving state, the steering pump rotating speed control strategies of the first stage and the second stage determine the steering pump rotating speed according to the second vehicle speed and rotating speed mapping relation and the real-time vehicle speed of the vehicle.
Further, in the vehicle speed-rotation speed map,:
setting the rotating speed of the steering pump as a rated rotating speed when the real-time vehicle speed is in the range from 0km/h to a first vehicle speed;
setting the rotation speed of the steering pump to be gradually reduced to a low-power-consumption rotation speed in the process of the real-time vehicle speed from the first vehicle speed to the second vehicle speed;
and when the real-time vehicle speed is higher than the second vehicle speed, setting the rotating speed of the steering pump to continuously keep the low-power-consumption rotating speed.
Furthermore, when the steering pump rotating speed control strategies of the first stage and the second stage are debugged, the constant value and the mapping relation between the vehicle speed and the rotating speed are debugged.
Still further, the steering pump speed control strategy configures a relationship between the steering pump drive electrical signal and the steering pump output speed to include: and measuring the steering pump driving electric signal at the output end of the steering pump controller through a current sensor, and measuring the steering pump rotating speed through an angle sensor to obtain a rotating speed and driving electric signal relation curve.
Furthermore, the preset steering performance limits the reference index of the whole vehicle in the set whole vehicle state; and when the steering pump rotating speed control strategy is executed in a corresponding whole vehicle state, comparing the real-time index of the whole vehicle with the reference index to judge whether the whole vehicle meets the set steering performance.
In a second aspect, the present invention provides a steering pump control strategy implementation device, including at least one processing unit, where the processing unit is connected to at least one storage unit through a bus unit, where the storage unit stores a computer program, and when the computer program is executed by the processing unit, the steering pump control strategy implementation method is implemented.
In a third aspect, the present invention provides a computer-readable storage medium storing a computer program which, when executed by a processing unit, implements the steering pump control strategy implementation method.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following advantages:
according to the steering pump control strategy implementation method, through the two-stage steering pump rotating speed control strategy debugging process, the working state of the steering pump driven by the driving electric signal of the steering pump output by the steering pump controller is enabled to meet the steering performance under different whole vehicle states. The rotation speed of the steering pump in the invention changes along with the change of the state of the whole vehicle.
In the steering pump control strategy:
when the steering pump is in a static waiting operation state, the steering pump is stopped to reduce the working time of the steering pump as much as possible, so that the aims of prolonging the effective working time of the steering pump and saving energy are fulfilled. When the steering pump is in a straight running state, the steering pump works at a constant rotating speed lower than a rated rotating speed, and the power consumption is low. Setting the rotating speed of the steering pump as a rated rotating speed when the real-time vehicle speed is in the range from 0km/h to a first vehicle speed; the steering pump operates at a nominal rotational speed to ensure that sufficient steering assistance is provided when the vehicle is at a low speed and the steering resistance is high. Setting the rotation speed of the steering pump to be gradually reduced to a low-power-consumption rotation speed in the process of the real-time vehicle speed from the first vehicle speed to the second vehicle speed; the low-power-consumption rotating speed meets the requirement that the steering performance provides proper steering assistance, the steering assistance provided by the vehicle is properly reduced under the conditions of high vehicle processing speed and small steering resistance, the user is prevented from generating the hand feeling of steering wheel drift, the use experience of the steering wheel of the user is unified, and the power consumption of the steering pump is reduced to achieve the purpose of saving energy. And when the real-time vehicle speed is higher than the second vehicle speed, setting the rotating speed of the steering pump to continuously keep the low-power-consumption rotating speed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a flow chart of a method for implementing a steering pump control strategy according to an embodiment of the present invention;
FIG. 2 is a flow chart for reasoning about the state of the whole vehicle according to the vehicle signals provided by the embodiment of the invention;
FIG. 3 is a flow chart of a steering pump speed control strategy according to an embodiment of the present invention for controlling a steering pump according to the vehicle state;
fig. 4 is a schematic diagram of a steering pump control strategy implementation device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Example 1
The embodiment of the invention provides a steering pump control strategy implementation method, which comprises a steering pump rotation speed control strategy debugging process in two stages.
Referring to fig. 1, the adjustment process of the steering pump rotation speed control strategy in the first stage and the second stage is an iterative adjustment process, and the parameters adjusted in the adjustment process of the steering pump rotation speed control strategy in the first stage and the second stage are parameters in the steering pump rotation speed control strategy. The iteration ending condition of the steering pump rotating speed control strategy debugging process of the first stage and the second stage is whether the whole vehicle meets the set steering performance or not. Firstly, a steering pump rotating speed control strategy debugging process of a first stage is carried out under the condition that the steering pump rotating speed is taken as a variable, if the whole vehicle does not meet the steering performance, the steering pump rotating speed control strategy debugging process of the first stage is continued, if the whole vehicle meets the steering performance, the steering pump rotating speed control strategy debugging of the first stage is completed, a steering pump rotating speed generation strategy is introduced into a steering pump controller, and the steering pump rotating speed control strategy debugging of a second stage is carried out under the condition that the driving electric signal of the steering pump is taken as the variable.
Specifically, the steering pump rotation speed control strategy debugging process in the first stage includes:
and judging the whole vehicle state by reading the whole vehicle signal, and executing a corresponding flow control steering pump according to the whole vehicle state by the steering pump rotating speed control strategy in the first stage.
In the implementation process, the vehicle state is obtained by reasoning vehicle signals read by the vehicle controller, and the vehicle signals include but are not limited to: vehicle speed signals, hand brake signals, steering wheel angle signals and gear signals.
Referring to fig. 2, the process of reasoning the state of the whole vehicle according to the vehicle signal includes:
and when the vehicle speed signal value is zero, the hand brake signal works and the gear signal is neutral, judging that the whole vehicle state is in a state to be operated.
And when the vehicle speed signal value is non-zero, further acquiring the steering wheel angle signal, judging that the whole vehicle is in a straight running state if the steering wheel angle signal value is smaller than a preset steering wheel free travel range, and judging that the whole vehicle is in a turning running state if the steering wheel angle signal value is larger than the preset steering wheel free travel range.
Referring to fig. 3, the steering pump rotation speed control strategy in the first stage executes a corresponding flow control steering pump according to the vehicle state, and includes:
in the rest state, the steering pump rotational speed control strategy controls the steering pump to stop.
In the straight running state, the steering pump rotating speed control strategy in the first stage sets the steering pump rotating speed to be a constant value, and the constant value is lower than the rated rotating speed of the steering pump.
In the turning driving state, the steering pump rotating speed control strategy determines the steering pump rotating speed according to a second vehicle speed and rotating speed mapping relation and a vehicle real-time vehicle speed, wherein the vehicle speed and rotating speed mapping relation is as follows: and when the real-time vehicle speed is in the range from 0km/h to the first vehicle speed, the steering resistance moment of the steering wheel is large, and the rotating speed of the steering pump is set to be the rated rotating speed. An exemplary first vehicle speed setting is 5km/h. And setting the rotation speed of the steering pump to be gradually reduced to a low-power-consumption rotation speed in the process of the real-time vehicle speed from the first vehicle speed to the second vehicle speed. An exemplary set point for the second vehicle speed is 60km/h. And when the real-time vehicle speed is higher than the second vehicle speed, setting the rotating speed of the steering pump to continuously keep the low-power-consumption rotating speed.
And limiting a reference index of the whole vehicle in a set whole vehicle state through the preset steering performance. And when the steering pump rotating speed control strategy is executed in a corresponding whole vehicle state, comparing the real-time index of the whole vehicle with the reference index to judge whether the whole vehicle meets the set steering performance.
And in the process of debugging the steering pump rotating speed control strategy in the first stage, when the steering pump rotating speed control strategy in the first stage is debugged, the constant value and the mapping relation between the vehicle speed and the rotating speed are debugged.
After the iteration of the steering pump rotating speed control strategy debugging process in the first stage is finished, introducing a steering pump rotating speed generation strategy into a steering pump controller, and entering the steering pump rotating speed control strategy debugging in the second stage under the condition that the driving electric signal of the steering pump is used as a variable.
The steering pump rotating speed control strategy debugging process of the second stage comprises the following steps:
and configuring the relation between the steering pump driving electric signal and the steering pump output rotating speed through the steering pump rotating speed generating strategy. Specifically, a steering pump driving electric signal at the output end of the steering pump controller is measured through a current sensor, and the steering pump rotating speed is measured through an angle sensor, so that a rotating speed and driving electric signal relation curve is obtained.
Detecting whether a steering pump controller is capable of satisfying the steering performance when executing the steering pump speed control strategy based on the steering pump speed generation strategy. Specifically, the debugging process of the steering pump rotating speed control strategy of the second stage is consistent with the debugging process of the steering pump rotating speed control strategy of the first stage, the whole vehicle state is judged by reading the whole vehicle signal, the steering pump rotating speed control strategy of the second stage executes corresponding flow control steering pump according to the whole vehicle state, and in the process of controlling the steering pump, the steering pump is driven by directly based on the driving electric signal generated by the steering pump rotating speed generation strategy instead of testing the rotating speed of the steering pump.
If the constant value and the vehicle speed and rotation speed mapping relation are debugged in the second-stage steering pump rotation speed control strategy debugging process.
And if yes, completing the control strategy configuration of the steering pump.
According to the steering pump control strategy implementation method, through the two-stage steering pump rotating speed control strategy debugging process, the working state of the steering pump driven by the driving electric signal of the steering pump output by the steering pump controller is enabled to meet the steering performance under different whole vehicle states. The rotation speed of the steering pump in the invention changes along with the change of the state of the whole vehicle.
In the steering pump control strategy:
when the steering pump is in a static waiting operation state, the steering pump is stopped to reduce the working time of the steering pump as much as possible, so that the aims of prolonging the effective working time of the steering pump and saving energy are fulfilled. When the steering pump is in a straight running state, the steering pump works at a constant rotating speed lower than a rated rotating speed, and the power consumption is low. Setting the rotating speed of the steering pump as a rated rotating speed when the real-time vehicle speed is in the range from 0km/h to a first vehicle speed; the steering pump operates at a nominal rotational speed to ensure that sufficient steering assistance is provided when the vehicle is at a low speed and the steering resistance is high. Setting the rotation speed of the steering pump to be gradually reduced to a low-power-consumption rotation speed in the process of the real-time vehicle speed from the first vehicle speed to the second vehicle speed; the low-power-consumption rotating speed meets the requirement that the steering performance provides proper steering assistance, the steering assistance provided by the vehicle is properly reduced under the conditions of high vehicle processing speed and small steering resistance, the user is prevented from generating the hand feeling of steering wheel drift, the use experience of the steering wheel of the user is unified, and the power consumption of the steering pump is reduced to achieve the purpose of saving energy. And when the real-time vehicle speed is higher than the second vehicle speed, setting the rotating speed of the steering pump to continuously keep the low-power-consumption rotating speed.
Example 2
Referring to fig. 4, an embodiment of the present invention provides a steering pump control strategy implementation device, including: the control system comprises at least one processing unit, at least one storage unit and a control unit, wherein the processing unit is connected with the at least one storage unit through a bus unit, the storage unit stores a computer program, and when the computer program is executed by the processing unit, the control strategy implementation method of the steering pump is realized, and under the condition that the rotating speed of the steering pump is used as a variable, the rotating speed control strategy debugging of the steering pump in the first stage is carried out:
judging the whole vehicle state by reading the whole vehicle signal, executing a corresponding flow control steering pump according to the whole vehicle state by the steering pump rotating speed control strategy in the first stage, comparing the real-time index of the whole vehicle with a set reference index to judge whether the whole vehicle meets the set steering performance or not when the steering pump rotating speed control strategy in the first stage is executed in the corresponding whole vehicle state, and continuing debugging if the whole vehicle does not meet the steering performance; if the whole vehicle meets the steering performance, a steering pump rotating speed generation strategy is introduced into a steering pump controller, and the steering pump rotating speed control strategy of the second stage is debugged under the condition that the driving electric signal of the steering pump is used as a variable:
and configuring the relation between the steering pump driving electric signal and the steering pump output rotating speed through the steering pump rotating speed generation strategy, detecting whether the steering performance can be met when the steering pump controller executes the steering pump rotating speed control strategy by taking the driving electric signal as a variable, executing the steering pump rotating speed control strategy debugging of the second stage if the steering performance can not be met, and completing the control strategy configuration of the steering pump if the steering performance can not be met.
Example 3
The embodiment of the invention provides a computer readable storage medium, which stores a computer program, when the computer program is executed by a processing unit, the method for realizing the steering pump control strategy is realized, and the steering pump rotation speed control strategy debugging in the first stage is carried out under the condition that the steering pump rotation speed is taken as a variable:
judging the whole vehicle state by reading the whole vehicle signal, executing a corresponding flow control steering pump according to the whole vehicle state by the steering pump rotating speed control strategy in the first stage, comparing the real-time index of the whole vehicle with a set reference index to judge whether the whole vehicle meets the set steering performance or not when the steering pump rotating speed control strategy in the first stage is executed in the corresponding whole vehicle state, and continuing debugging if the whole vehicle does not meet the steering performance; if the whole vehicle meets the steering performance, a steering pump rotating speed generation strategy is introduced into a steering pump controller, and the steering pump rotating speed control strategy of the second stage is debugged under the condition that the driving electric signal of the steering pump is used as a variable:
and configuring the relation between the steering pump driving electric signal and the steering pump output rotating speed through the steering pump rotating speed generation strategy, detecting whether the steering performance can be met when the steering pump controller executes the steering pump rotating speed control strategy by taking the driving electric signal as a variable, executing the steering pump rotating speed control strategy debugging of the second stage if the steering performance can not be met, and completing the control strategy configuration of the steering pump if the steering performance can not be met.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., and include several instructions for causing an electronic device (which may be a mobile phone, a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed structures and methods may be implemented in other manners. For example, the structural embodiments described above are merely illustrative, and for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via interfaces, structures or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the 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 (9)
1. The method for realizing the steering pump control strategy is characterized by comprising a steering pump rotating speed control strategy debugging process with two stages, wherein:
under the condition that the rotation speed of the steering pump is used as a variable, the rotation speed control strategy of the steering pump in the first stage is debugged, the rotation speed control strategy of the steering pump in the first stage executes corresponding flow control steering pump according to the state of the whole vehicle, when the rotation speed control strategy of the steering pump in the first stage is executed in the corresponding state of the whole vehicle, the real-time index of the whole vehicle and the set reference index are compared to judge whether the whole vehicle meets the set steering performance, otherwise, the debugging is continued; if yes, introducing a steering pump rotating speed generation strategy into a steering pump controller, debugging a steering pump rotating speed control strategy of a second stage under the condition that a driving electric signal of a steering pump is used as a variable, configuring the relation between the driving electric signal of the steering pump and the output rotating speed of the steering pump through the steering pump rotating speed generation strategy, detecting whether the steering performance can be met when the steering pump controller executes the steering pump rotating speed control strategy by taking the driving electric signal as the variable, if not, executing the steering pump rotating speed control strategy debugging of the second stage, and if yes, completing the control strategy configuration of the steering pump.
2. The steering pump control strategy implementation method according to claim 1, wherein the vehicle state is obtained by inference from vehicle parameter signals read by a vehicle controller, the vehicle parameter signals including, but not limited to: vehicle speed signal, manual brake signal, steering wheel corner signal and gear signal, wherein:
when the vehicle speed signal value is zero, the hand brake signal works and the gear signal is neutral, judging that the whole vehicle state is a state to be operated;
and when the vehicle speed signal value is non-zero, acquiring the steering wheel angle signal, judging that the whole vehicle state is in a straight running state if the steering wheel angle signal value is smaller than a preset steering wheel free travel range, and judging that the whole vehicle state is in a turning running state if the steering wheel angle signal value is larger than the preset steering wheel free travel range.
3. The method according to claim 1, wherein the steering pump rotational speed control strategies of the first stage and the second stage execute respective flow control steering pumps according to the vehicle state, comprising:
in a static waiting operation state, the steering pump rotating speed control strategy of the first stage and the second stage controls the steering pump to stop;
in a straight running state, the steering pump rotating speed control strategies of the first stage and the second stage set the steering pump rotating speed to be a constant value, wherein the constant value is lower than the rated rotating speed of the steering pump;
and in the turning driving state, the steering pump rotating speed control strategies of the first stage and the second stage determine the steering pump rotating speed according to the second vehicle speed and rotating speed mapping relation and the real-time vehicle speed of the vehicle.
4. The steering pump control strategy implementation according to claim 3, wherein in the vehicle speed-rotation speed map:
setting the rotating speed of the steering pump as a rated rotating speed when the real-time vehicle speed is in the range from 0km/h to a first vehicle speed;
setting the rotation speed of the steering pump to be gradually reduced to a low-power-consumption rotation speed in the process of the real-time vehicle speed from the first vehicle speed to the second vehicle speed;
and when the real-time vehicle speed is higher than the second vehicle speed, setting the rotating speed of the steering pump to continuously keep the low-power-consumption rotating speed.
5. The method according to claim 3, wherein the constant value and the vehicle speed-rotation speed map are adjusted when the steering pump rotation speed control strategy of the first stage and the second stage is adjusted.
6. The method of implementing a steering pump control strategy according to claim 1, wherein the steering pump speed control strategy configures a relationship between a steering pump drive electrical signal and a steering pump output speed comprising: and measuring the steering pump driving electric signal at the output end of the steering pump controller through a current sensor, and measuring the steering pump rotating speed through an angle sensor to obtain a rotating speed and driving electric signal relation curve.
7. The steering pump control strategy implementation method according to claim 1, wherein the preset steering performance defines a reference index of the whole vehicle in a set whole vehicle state; and when the steering pump rotating speed control strategy is executed in a corresponding whole vehicle state, comparing the real-time index of the whole vehicle with the reference index to judge whether the whole vehicle meets the set steering performance.
8. A steering pump control strategy implementation device, characterized by comprising at least one processing unit, the processing unit being connected to at least one memory unit through a bus unit, the memory unit storing a computer program, which when executed by the processing unit, implements the steering pump control strategy implementation method according to any one of claims 1 to 7.
9. A computer-readable storage medium storing a computer program, characterized in that the computer program, when executed by a processing unit, implements the steering pump control strategy implementation method according to any one of claims 1 to 7.
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