CN104890531A - Double-channel accelerator pedal signal control method - Google Patents
Double-channel accelerator pedal signal control method Download PDFInfo
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- CN104890531A CN104890531A CN201510309255.0A CN201510309255A CN104890531A CN 104890531 A CN104890531 A CN 104890531A CN 201510309255 A CN201510309255 A CN 201510309255A CN 104890531 A CN104890531 A CN 104890531A
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Abstract
The invention discloses a double-channel accelerator pedal signal control method. The method includes the steps: 1) in an initial state, an operator does not step on an accelerator pedal to enable the accelerator pedal to be in an idle state; 2) the operator steps on the accelerator pedal, an accelerator pedal sensor converts pedal information into double-channel voltage analog signals P1 and P2, and outputting the P1 and P2 to an electric vehicle control unit; 3) the electric vehicle control unit processes the double-channel voltage analog signals P1 and P2 to work out AD (analog-digital) values of motor output torque pedal signals. Compared with the prior art, the double-channel accelerator pedal signal control method has the advantages that firstly, by adoption of the accelerator pedal sensor for double-channel signal acquisition, safety redundancy is improved as compared with that of signal-channel signals; 2) secondly, uniformity of input paths of the double-channel accelerator pedal sensor signals transmitted into the vehicle control unit is achieved, common-mode interference signals superposed onto the double-channel accelerator pedal sensor signals are filtered, and effectiveness in filtering is realized; thirdly, by real-time contrastive calculation of acquired signals, control strategies are made correspondingly aiming at failure modes of the accelerator pedal sensor signals, and accordingly control accuracy is improved.
Description
[technical field]
The present invention relates to electric vehicle engineering field, particularly relate to a kind of two-way acceleration pedal signal control method.
[background technology]
Along with improving constantly the attention of energy security and environmental protection problem in the world, various countries require more and more stricter to automotive emissions.Reduce the dependence to the energy, realize energy-saving and emission-reduction, become world economy and continued development problem in the urgent need to address, hybrid vehicle, pure electric automobile have become the trend of current auto-domain development.Motor and driving engine combine by oil-electric vehicle; rational energy saving and emission reduction effects is achieved for each operating mode; idle stop, electric motor starting, intelligent charge, regenerative brake, motor power-assisted, the electronic function such as to creep; having and reduce oil consumption, increase continual mileage, advantage that technology maturity is higher, is the primary trend of current China Automobile Industry.
In hybrid vehicle, driving engine and motor are two propulsions source, hybrid controller (HCU) is the core of full-vehicle control, primary responsibility coordinates the control between engine management system (EMS) and electric machine controller (MCU), and and the torque coordination of gearbox control system (TCU), to realize the good driving performance of vehicle and energy optimization.
Wherein, acceleration pedal signal control method is also one of gordian technique in pure electric automobile, field of hybrid electric vehicles, and it is also making constant progress.In pure electric automobile, hybrid vehicle control, acceleration pedal, as the most important input of car load moment of torsion, has significant impact to the safe operation of vehicle.
Sign in this, be necessary to provide a kind of new two-way acceleration pedal signal control method to improve the safety of vehicle operating in fact.
[summary of the invention]
The object of this invention is to provide a kind of simplicity of design, can double-channel collection acceleration pedal signal real time contrast can calculate the two-way acceleration pedal signal control method of motor output torque pedal signal AD value.
To achieve these goals, the invention provides a kind of two-way acceleration pedal signal control method, it comprises the following steps:
1) incipient state, manipulator is accelerator pedal not, and Das Gaspedal is in idling mode;
2) step on Das Gaspedal, accelerator pedal sensor converts pedal information to two-way voltage analog signal P1, P2 and P1, P2 is exported to controller of whole electric vehicle;
3) entire car controller calculates motor output torque pedal signal AD value to after two-way voltage analog signal P1, P2 process, and its AD value comprises:
As the normal and P1=2P2 of P1 and P2 simple two-way signal, AD=2* (P1-P2);
When P1 is normal, when P2 lost efficacy, AD=P1;
When P1 lost efficacy, when P2 is normal, AD=2P2.
One as two-way acceleration pedal signal control method of the present invention is improved, and the range of normal value of P1 is the range of normal value of 0.5-4v, P2 is 0.2-2v.
One as two-way acceleration pedal signal control method of the present invention is improved, and when P1, P2 all lost efficacy, cannot calculate AD value, entire car controller reported an error.
Compared with prior art, the benefit that two-way acceleration pedal signal control method of the present invention has is: 1) two-way accelerator pedal sensor acquisition of signal, increases Safety Redundancy relative to one-channel signal; 2) two-way accelerator pedal sensor Signal transmissions is consistent to the input path of entire car controller, filtering can superpose superincumbent common mode interference signal, play actv. filter action, add the reliability and stability of incoming signal; 3) collection signal real time contrast is calculated, make corresponding control policy for accelerator pedal sensor Signal Fail pattern, thus increase the particularity controlled.
[accompanying drawing explanation]
Fig. 1 inputs to the schematic diagram of entire car controller for two-way acceleration pedal signal P1, P2 that two-way acceleration pedal signal control method of the present invention is taked;
Fig. 2 is two-way acceleration pedal signal control method signal processing flow figure of the present invention.
[detailed description of the invention]
In order to make, object of the present invention, technical scheme and Advantageous Effects are more clear to be understood, below in conjunction with the drawings and specific embodiments, is further elaborated to the present invention.Should be understood that, the detailed description of the invention described in this specification sheets is only used to explain the present invention, is not to limit the present invention.
Please refer to Fig. 1, shown in 2, the invention provides a kind of two-way acceleration pedal signal control method, under normal circumstances, controller of whole electric vehicle receives the two-way voltage analog signal that the conversion of pedal information is formed, and after processing, calculate motor output torque pedal signal AD value, when in abnormal cases, controller of whole electric vehicle only receives the road voltage analog signal that the conversion of pedal information is formed, and after processing, calculate motor output torque pedal signal AD value, in extreme circumstances, the two-way voltage analog signal formed by the conversion of pedal information that controller of whole electric vehicle receives is entirely ineffective, then controller of whole electric vehicle reports an error immediately, to remind chaufeur to take other safety measures, to ensure the safety of driving.
A kind of two-way acceleration pedal of the present invention signal control method, its concrete scheme is as follows:
Shown in Fig. 1, two-way acceleration pedal signal P1, P2 input to entire car controller, wherein the value of P1, P2 difference corresponding motor output torque pedal signal AD1, AD2.
Refer to shown in table 1, this is a kind of two-way acceleration pedal of the present invention signal control method when two-way acceleration pedal signal P1, P2 value collected is different, the motor output torque pedal signal AD value of pedal signal state and correspondence.
Table 1
Know from table 1, if a road acceleration pedal Signal Fail, entire car controller then can switch to another road signal immediately, can guarantee that vehicle can continue travel and be unlikely to out of control; If two-way letter lost efficacy simultaneously, then entire car controller carried out fault alarm, reminded navigating mate to look in time and repaiied fault.
Under normal circumstances, entire car controller gathers simple two-way signal P1 and P2 value simultaneously, and the AD value being used for calculating motor output torque pedal signal is: Vaccel=2 (P1-P2)=2 (AD1-AD2).
The input path transferring to entire car controller due to two-way Acceleration Signal is consistent, therefore it is also consistent for superposing superincumbent interfering signal during vehicle operating, by carrying out difference process to two paths of signals, filtering can superpose superincumbent common mode interference signal, play actv. filter action, add the reliability and stability of incoming signal.
To sum up, a kind of two-way acceleration pedal of the present invention signal control method, it specifically comprises the following steps:
1) incipient state, manipulator is accelerator pedal not, and Das Gaspedal is in idling mode;
2) step on Das Gaspedal, accelerator pedal sensor converts pedal information to two-way voltage analog signal P1, P2 and P1, P2 is exported to controller of whole electric vehicle;
3) entire car controller calculates motor output torque pedal signal AD value to after two-way voltage analog signal P1, P2 process, and its AD value comprises:
As the normal and P1=2P2 of P1 and P2 simple two-way signal, AD=2* (P1-P2);
When P1 is normal, when P2 lost efficacy, AD=P1;
When P1 lost efficacy, when P2 is normal, AD=2P2.
Two-way acceleration pedal signal control method of the present invention, be not restricted to described in specification sheets and embodiment, therefore additional advantage and amendment can easily be realized for the personnel of familiar field, therefore when not deviating from the spirit and scope of the universal that claim and equivalency range limit, the present invention is not limited to specific details, representational equipment and illustrates here and the examples shown described.
Claims (3)
1. a two-way acceleration pedal signal control method, is characterized in that: comprise the following steps:
1) incipient state, manipulator is accelerator pedal not, and Das Gaspedal is in idling mode;
2) step on Das Gaspedal, accelerator pedal sensor converts pedal information to two-way voltage analog signal P1, P2 and P1, P2 is exported to controller of whole electric vehicle;
3) entire car controller calculates motor output torque pedal signal AD value to after two-way voltage analog signal P1, P2 process, and its AD value comprises:
As the normal and P1=2P2 of P1 and P2 simple two-way signal, AD=2* (P1-P2);
When P1 is normal, when P2 lost efficacy, AD=P1;
When P1 lost efficacy, when P2 is normal, AD=2P2.
2. two-way acceleration pedal signal control method as claimed in claim 1, is characterized in that: the range of normal value of P1 is the range of normal value of 0.5-4v, P2 is 0.2-2v.
3. two-way acceleration pedal signal control method as claimed in claim 2, is characterized in that: when P1, P2 lost efficacy, cannot calculate AD value, entire car controller reported an error.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510309255.0A CN104890531A (en) | 2015-06-07 | 2015-06-07 | Double-channel accelerator pedal signal control method |
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| CN201510309255.0A CN104890531A (en) | 2015-06-07 | 2015-06-07 | Double-channel accelerator pedal signal control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857073A (en) * | 2016-05-11 | 2016-08-17 | 郑州宇通客车股份有限公司 | Accelerator pedal and accelerator pedal signal control method |
| CN106364365A (en) * | 2016-09-12 | 2017-02-01 | 北京新能源汽车股份有限公司 | Method and device for processing double-path accelerator pedal signals |
| CN106950901A (en) * | 2017-04-24 | 2017-07-14 | 深圳市智慧车联科技有限公司 | A kind of method for improving throttle position switch reliability |
| CN107918377A (en) * | 2017-10-20 | 2018-04-17 | 开沃新能源汽车集团有限公司 | Pedal method for diagnosing faults based on entire car controller |
| CN108839564A (en) * | 2018-05-11 | 2018-11-20 | 铠龙东方汽车有限公司 | A kind of automobile-used accelerator pedal failure detection and control strategy |
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| CN102901639A (en) * | 2012-09-29 | 2013-01-30 | 北京智行鸿远汽车技术有限公司 | Method for diagnosing accelerator pedal of hybrid power vehicle |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857073A (en) * | 2016-05-11 | 2016-08-17 | 郑州宇通客车股份有限公司 | Accelerator pedal and accelerator pedal signal control method |
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| CN106364365A (en) * | 2016-09-12 | 2017-02-01 | 北京新能源汽车股份有限公司 | Method and device for processing double-path accelerator pedal signals |
| CN106364365B (en) * | 2016-09-12 | 2018-10-16 | 北京新能源汽车股份有限公司 | Method and device for processing double-path accelerator pedal signals |
| CN106950901A (en) * | 2017-04-24 | 2017-07-14 | 深圳市智慧车联科技有限公司 | A kind of method for improving throttle position switch reliability |
| CN107918377A (en) * | 2017-10-20 | 2018-04-17 | 开沃新能源汽车集团有限公司 | Pedal method for diagnosing faults based on entire car controller |
| CN108839564A (en) * | 2018-05-11 | 2018-11-20 | 铠龙东方汽车有限公司 | A kind of automobile-used accelerator pedal failure detection and control strategy |
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