CN103822861A - Diesel engine exhaust particle concentration detector based on fuzzy PID (proportional-integral-derivative) control - Google Patents

Diesel engine exhaust particle concentration detector based on fuzzy PID (proportional-integral-derivative) control Download PDF

Info

Publication number
CN103822861A
CN103822861A CN201410092675.3A CN201410092675A CN103822861A CN 103822861 A CN103822861 A CN 103822861A CN 201410092675 A CN201410092675 A CN 201410092675A CN 103822861 A CN103822861 A CN 103822861A
Authority
CN
China
Prior art keywords
circuit
diesel engine
engine exhaust
fuzzy
pid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410092675.3A
Other languages
Chinese (zh)
Inventor
陈红岩
沈红源
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Jiliang University
Original Assignee
China Jiliang University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Jiliang University filed Critical China Jiliang University
Priority to CN201410092675.3A priority Critical patent/CN103822861A/en
Publication of CN103822861A publication Critical patent/CN103822861A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention discloses a diesel engine exhaust particle concentration detector based on fuzzy PID (proportional-integral-derivative) control. The diesel engine exhaust particle concentration detector comprises a gas flow sensor, a main control panel, an electric flow valve drive circuit, an electric flow valve, a flow pump and a diesel engine exhaust particle sensor. The diesel engine exhaust particle concentration detector adopts a fuzzy PID control system which comprises an input module, a fuzzy control module and a PID control module; a controller on the main control panel takes a deviation e between a given gas flow rate value and a measured value by the gas flow sensor, and a deviation change rate delta e as input variables, takes parameters Kp, Ki and Kd of the PID controller as output quantities to control the PID controller, so that the flow rate of a gas given to the diesel engine exhaust particle sensor (1) is stable; and due to adoption of the novel sensor structure and circuit structure as well as the fuzzy PID control algorithm for detecting the gas flow rate of an diesel engine by a corresponding microcontroller, corresponding diesel engine exhaust particle concentration can be measured under a stable flow velocity condition.

Description

A kind of Fractions of Diesel Engine Exhaust Particulates concentration detection apparatus based on fuzzy control
Technical field
The present invention relates to a kind of granule density pick-up unit, be specifically related to a kind of Fractions of Diesel Engine Exhaust Particulates concentration detection apparatus based on fuzzy control.
Background technology
Day by day serious along with environmental pollution, dust pollution causes people's concern day by day.Dust sensor kind in market is a lot, and " a kind of dust sensor " that be CN101598657A as patent publication No. discloses a kind of dust sensor, by the inside of sensor described in extraneous dust air suction, and through photoelectric conversion unit; Photoelectric conversion unit provides a light source, irradiate process containing dust air, and produce scattered light, transfer described scattered light to Voltage-output signal, and export described voltage signal to described voltage signal unit; Signal amplification unit, be connected with optical semiconductor detector, the signal of accepting is processed and amplified and export, processing unit is connected with magnification processing, based on the voltage signal of signal amplification unit output, and the proportionate relationship of the voltage signal prestoring and dust concentration is calculated dust concentration.Above-mentioned dust sensor circuit is relatively simple, is easily subject to temperature extraneous factor and disturbs, and there is no corresponding detectable concentration algorithm, and precision not high stability is not high.
While, due to the different operating modes of diesel engine with for increase, it detected stability in the time applying above-mentioned dust sensor in diesel exhaust granule density, considered again the non-linear of scene and changed acutely; Need to adopt Fuzzy PID is that main controller detects in order to realize stable Fractions of Diesel Engine Exhaust Particulates concentration, needs to design a kind of Fractions of Diesel Engine Exhaust Particulates concentration device and corresponding control method for this reason.
Summary of the invention
It is higher that technical matters to be solved by this invention is to provide a kind of measuring accuracy, diesel engine particles concentration detection apparatus and the corresponding control method of greater efficiency.
The present invention will solve the problems of the technologies described above adopted technical scheme:
A kind of Fractions of Diesel Engine Exhaust Particulates concentration detection apparatus based on fuzzy control, comprise air flow rate sensor, master control borad, electric flow valve-driving circuit, electric flow valve, flow pump, Fractions of Diesel Engine Exhaust Particulates sensor, described flow pump is connected with master control borad, described air flow rate sensor is installed on gas channels, and described air flow rate sensor is connected with an A/D module of described master control borad; Described Fractions of Diesel Engine Exhaust Particulates sensor is connected with the 2nd A/D module on master control borad, and described master control borad is connected with described electric flow valve-driving circuit by output pwm signal circuit, and described electric flow valve is connected with electric flow valve-driving circuit; It is characterized in that: Fractions of Diesel Engine Exhaust Particulates concentration device adopts Fuzzy PID Control System: comprise load module, fuzzy control model, pid control module; Corresponding load module adopts touch-screen and related circuit, and PID controller topworks adopts electric flow valve;
Controller on described master control borad is with given gas flow rate value and the deviation of air flow rate sensor measured value ewith deviation variation rate △ e as input variable, the parameter K of PID controller p, K i, K das output quantity, PID regulator to be controlled, thereby the gas flow rate that gives Fractions of Diesel Engine Exhaust Particulates sensor (1) is stablized, this Fuzzy PID comprises the steps:
1, set variable m to controller, described air flow rate sensor voltage signal f compares, and deviation is e; Deviation variation rate △ e=e (n)-e (n-1); The parameter K of PID controller p, K i, K das output quantity, PID regulator is controlled to final output quantity u;
2, by input variable deviation e, deviation variation rate △ e, output quantity K p, K i, K dcarry out obfuscation; E, △ e, K p, K i, K dfuzzy field be { NB, NM, NS, ZO, PS, PM, PB}; The territory of e, △ e be 3 ,-2 ,-2 ,-1,0,1,2,3}; K i, K p, K ddomain be 4.5 ,-3 ,-1.5,0,1,3,4.5};
3, the control law form of this controller is IfE and △ E Then U, and control law adopts fuzzy reasoning method, is respectively IF e and △ e, Then K p; IF e and △ e, Then K i; IF e and △ e, Then K d;
What 4, obtain by fuzzy reasoning is fuzzy set, adopts maximum membership degree method to carry out reverse gelatinization;
5,, according to pid parameter setting principle and summary of experience, can obtain output quantity u:
u = Kpe ( n ) + K i Σ i = 0 i = n e ( i ) + Kd [ Δe ( i ) ] .
Described Fractions of Diesel Engine Exhaust Particulates sensor, comprise sensor body, light path, light source driving circuit, photo-electric signal receiving circuit, signal processing circuit, signal output apparatus, described light path comprises modulated light source, the working direction that described modulated light source is sent light beam is provided with lens successively, diaphragm, photosensitive area, described light source driving circuit is light source pwm pulse modulation signal transtation mission circuit, described photo-electric signal receiving circuit is the voltage amplification type circuit with differential amplifying power, comprise amplifier and photodiode and electric capacity and resistance, described resistance and photodiode are positioned at the normal phase input end of amplifier, described resistance capacitance is at amplifier negative input composition differentiating amplifier, described signal processing circuit is selective frequency amplifier circuit and phase-locked amplifying circuit, described selective frequency amplifier circuit is between described voltage amplification type circuit and phase-locked amplifying circuit, described phase-locked amplifying circuit comprises phase detector, low-pass filter and reference signal circuit, two ports of described phase detector input are connected with low-pass filter input end with described selective frequency amplifier circuit respectively, the output terminal of described phase detector is connected with described signal output apparatus, and described low-pass filter input end is connected with reference signal circuit.
Compared with prior art, the invention has the advantages that: owing to adopting new sensor construction and circuit structure and corresponding microcontroller to detect diesel engine gas flow rate Fuzzy PID, thereby can be under the condition of stablizing flow velocity, record corresponding diesel engine vent gas dust granules concentration.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of Fractions of Diesel Engine Exhaust Particulates sensor;
Fig. 2 is Fractions of Diesel Engine Exhaust Particulates concentration detection apparatus;
Fig. 3 is Fuzzy PID Control System figure;
Fig. 4 is master control borad schematic diagram;
Fig. 5 is the light channel structure figure of Fractions of Diesel Engine Exhaust Particulates sensor.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
The Fractions of Diesel Engine Exhaust Particulates concentration detection apparatus based on fuzzy control as described in Fig. 1 to 5, comprise diesel oil device tail gas particle sensor 1, master control borad 3, electric flow valve 6, electric flow valve-driving circuit 4, flow pump 7, air flow rate sensor 2, described flow pump 7 is connected with master control borad 3, and described air flow rate sensor 2 is installed on gas channels.
Above-mentioned Fractions of Diesel Engine Exhaust Particulates sensor 1, comprise sensor body, light path, sensor amplifier circuit, described light path comprises modulated light source 10, the working direction that described modulated light source 10 is sent light beam is provided with successively lens 8, diaphragm 15, photosensitive area 16, scattering occurs in photosensitive area, rays pass through lens 8 after scattering, finally enters photodiode 9.
Described sensor amplifier circuit, comprise light source driving circuit 1.1, photo-electric signal receiving circuit., signal processing circuit, signal output apparatus 1.9, the light source driving circuit 1.1 is here light source pwm pulse modulation signal transtation mission circuit, described photo-electric signal receiving circuit is the voltage amplification type circuit 1.2 with differential amplifying power, comprise amplifier and photodiode and electric capacity and resistance, described resistance and photodiode are positioned at the normal phase input end of amplifier, and described resistance capacitance is at amplifier negative input composition differentiating amplifier, described signal processing circuit is selective frequency amplifier circuit 1.3 and phase-locked amplifying circuit 1.4, described selective frequency amplifier circuit 1.3 is between described voltage amplification type circuit 1.2 and phase-locked amplifying circuit 1.4, described phase-locked amplifying circuit 1.4 comprises phase detector 1.5, low-pass filter 1.6 and reference signal circuit 1.7, two ports that described phase detector 1.5 is inputted are connected with low-pass filter 1.6 input ends with described selective frequency amplifier circuit 1.3 respectively, the output terminal of described phase detector 1.5 is connected with described signal output apparatus 1.9, described low-pass filter 1.6 input ends are connected with reference signal circuit 1.7.
The modulation signal that modulated light source pwm pulse modulating wave used is 60～800Hz, dutycycle is 0.3～0.4.
Described air flow rate sensor 2 is connected with an A/D module 3.1 of described controller 3.3; Described diesel exhaust particle sensor is connected with the 2nd A/D module 3.2 on master control borad, and described master control borad 3 is connected with described electric flow valve-driving circuit 4 by output pwm signal; Described electric flow valve 6 is connected with electric flow valve-driving circuit 4.Described master control borad 3 is exported an other road PWM ripple in order to control flow pump 7;
The Fuzzy PID Control System of diesel engine particles detection system: comprise load module 11, fuzzy control model 12, pid control module 13; Corresponding load module adopts touch-screen 5 and related circuit, and PID controller topworks adopts electric flow valve 6; Fuzzy-PID control device is write corresponding control program in STM32;
Main operational factor: dust concentration mg/m 3, gas flow rate m 3/ s, inputs given gas flow rate value f by touch-screen to controller 3.3, controller by the deviation e of the gas flow rate m value using given and in-site measurement value and deviation variation rate △ e as input variable, the parameter K of PID controller p, K i, K das output quantity, PID regulator to be controlled, thereby the gas flow rate that gives dust sensor is stablized, this Fuzzy PID comprises the steps:
1, set variable m to controller 3.3, described air flow rate sensor voltage signal f compares, and deviation is e; Deviation variation rate △ e=e (n)-e (n-1); The parameter K of PID controller p, K i, K das output quantity, PID regulator is controlled to final output quantity u;
2, by input variable deviation e, deviation variation rate △ e, output quantity K p, K i, K dcarry out obfuscation, e, △ e, K p, K i, K dfuzzy subset be { NB, NM, NS, ZO, PS, PM, PB}; The domain of e, △ e be 3 ,-2 ,-2 ,-1,0,1,2,3}; K i, K p, K dterritory be 4.5 ,-3 ,-1.5,0,1,3,4.5}; E, △ e, K p, Ki, K dsubordinate function adopts triangle subordinate function;
K pfuzzy response table:
K ifuzzy response table:
Figure BSA0000101912680000051
K dfuzzy response table:
Figure BSA0000101912680000052
3, the control law form of this controller is If e and △ e Then u, and control law adopts fuzzy reasoning established law, is respectively IF e and △ e, Then K p; IF e and △ e, Then K i; IF e and △ e, Then K d;
What 4, obtain by fuzzy reasoning is fuzzy set, adopts maximum membership degree method to carry out reverse gelatinization;
5 according to pid parameter setting principle and summary of experience, can obtain output quantity u:
u = Kpe ( n ) + K i Σ i = 0 i = n e ( i ) + Kd [ Δe ( i ) ] .

Claims (2)

1. the Fractions of Diesel Engine Exhaust Particulates concentration detection apparatus based on fuzzy control, comprise air flow rate sensor (2), master control borad (3), electric flow valve-driving circuit (4), electric flow valve (6), flow pump (7), Fractions of Diesel Engine Exhaust Particulates sensor (1), described flow pump (7) is connected with master control borad (3), described air flow rate sensor (2) is installed on gas channels, and described air flow rate sensor (2) is connected with an A/D module (3.1) of described master control borad; Described Fractions of Diesel Engine Exhaust Particulates sensor (1) is connected with the 2nd A/D module (3.2) on master control borad, described master control borad (3) is connected with described electric flow valve-driving circuit (4) by output pwm signal circuit, and described electric flow valve (6) is connected with electric flow valve-driving circuit (4); It is characterized in that: Fractions of Diesel Engine Exhaust Particulates concentration device adopts Fuzzy PID Control System: comprise load module (11), fuzzy control model (12), pid control module (13); Corresponding load module (11) adopts touch-screen (5) and related circuit, and PID controller topworks adopts electric flow valve (6);
Controller (3.3) on described master control borad is using the deviation e of given gas flow rate value and air flow rate sensor measured value and deviation variation rate △ e as input variable, parameter K p, the Ki of PID controller, Kd are as output quantity, PID regulator is controlled, thereby the gas flow rate that gives Fractions of Diesel Engine Exhaust Particulates sensor (1) is stablized, and this Fuzzy PID comprises the steps:
1), set variable m to controller (3.3), described air flow rate sensor voltage signal f compares, and deviation is e; Deviation variation rate △ e=e (n)-e (n-1); Parameter K p, the Ki of PID controller, Kd, as output quantity, control PID regulator, final output quantity u;
2), by input variable deviation e, deviation variation rate △ e, output quantity Kp, Ki, Kd carries out obfuscation; E, △ e, Kp, Ki, the fuzzy field of Kd is { NB, NM, NS, ZO, PS, PM, PB}; The territory of e, △ e be 3 ,-2 ,-2 ,-1,0,1,2,3}; Ki, Kp, the domain of Kd be 4.5 ,-3 ,-1.5,0,1,3,4.5};
3), the control law form of this controller is IfE and △ E Then U, control law adopts fuzzy reasoning method, is respectively IF e and △ e, Then Kp; IF e and △ e, Then Ki; IF e and △ e, Then Kd;
4), obtain by fuzzy reasoning for fuzzy set, adopt maximum membership degree method to carry out reverse gelatinization;
5), according to pid parameter setting principle and summary of experience, can obtain output quantity u:
u = Kpe ( n ) + K i Σ i = 0 i = n e ( i ) + Kd [ Δe ( i ) ] .
2. a kind of Fractions of Diesel Engine Exhaust Particulates concentration detection apparatus based on fuzzy control according to claim 1, it is characterized in that: described Fractions of Diesel Engine Exhaust Particulates sensor (1), comprise sensor body, light path, light source driving circuit (1.1), photo-electric signal receiving circuit, signal processing circuit, signal output apparatus (1.9), described light path comprises modulated light source (10), the working direction that described modulated light source (10) is sent light beam is provided with lens (8) successively, diaphragm (15), photosensitive area (16), described light source driving circuit (1.1) is light source pwm pulse modulation signal transtation mission circuit, described photo-electric signal receiving circuit is the voltage amplification type circuit (1.2) with differential amplifying power, comprise amplifier and photodiode and electric capacity and resistance, described resistance and photodiode are positioned at the normal phase input end of amplifier, described resistance capacitance is at amplifier negative input composition differentiating amplifier, described signal processing circuit is selective frequency amplifier circuit (1.3) and phase-locked amplifying circuit (1.4), described selective frequency amplifier circuit (1.3) is positioned between described voltage amplification type circuit (1.2) and phase-locked amplifying circuit (1.4), described phase-locked amplifying circuit (1.4) comprises phase detector (1.5), low-pass filter (1.6) and reference signal circuit (1.7), two ports of described phase detector (1.5) input are connected with low-pass filter (1.6) input end with described selective frequency amplifier circuit (1.3) respectively, the output terminal of described phase detector (1.5) is connected with described signal output apparatus (1.9), described low-pass filter (1.6) input end is connected with reference signal circuit (1.7).
CN201410092675.3A 2014-03-12 2014-03-12 Diesel engine exhaust particle concentration detector based on fuzzy PID (proportional-integral-derivative) control Pending CN103822861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410092675.3A CN103822861A (en) 2014-03-12 2014-03-12 Diesel engine exhaust particle concentration detector based on fuzzy PID (proportional-integral-derivative) control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410092675.3A CN103822861A (en) 2014-03-12 2014-03-12 Diesel engine exhaust particle concentration detector based on fuzzy PID (proportional-integral-derivative) control

Publications (1)

Publication Number Publication Date
CN103822861A true CN103822861A (en) 2014-05-28

Family

ID=50758030

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410092675.3A Pending CN103822861A (en) 2014-03-12 2014-03-12 Diesel engine exhaust particle concentration detector based on fuzzy PID (proportional-integral-derivative) control

Country Status (1)

Country Link
CN (1) CN103822861A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106556676A (en) * 2016-10-27 2017-04-05 中法渤海地质服务有限公司 A kind of detection means and detection method for multi-channel gas
CN108043163A (en) * 2017-12-13 2018-05-18 华中科技大学 A kind of control system and its intelligent control method for removing fine particle
CN110031385A (en) * 2016-11-02 2019-07-19 北京信息科技大学 A kind of flow cytometer laminar flow control method
CN112327949A (en) * 2020-11-05 2021-02-05 中国人民解放军国防科技大学 Intelligent flow control system and control method for air-breathing electric propulsion
CN114991920A (en) * 2022-05-23 2022-09-02 重庆文理学院 Treatment system for nitrogen oxide in diesel engine automobile exhaust

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101187620A (en) * 2007-12-20 2008-05-28 西安劳特信息技术有限责任公司 Back scattering type photoelectric dust density detector
CN101968426A (en) * 2010-09-27 2011-02-09 常熟市矿山机电器材有限公司 Dust concentration sensor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101187620A (en) * 2007-12-20 2008-05-28 西安劳特信息技术有限责任公司 Back scattering type photoelectric dust density detector
CN101968426A (en) * 2010-09-27 2011-02-09 常熟市矿山机电器材有限公司 Dust concentration sensor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
常晓恒: "模糊自适应整定PID控制器的设计", 《中国优秀博硕士学位论文全文数据库（硕士） 信息科技辑》 *
王雪梅: "基于16位高性能单片机的智能颗粒物检测仪的研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106556676A (en) * 2016-10-27 2017-04-05 中法渤海地质服务有限公司 A kind of detection means and detection method for multi-channel gas
CN110031385A (en) * 2016-11-02 2019-07-19 北京信息科技大学 A kind of flow cytometer laminar flow control method
CN110031385B (en) * 2016-11-02 2021-07-02 北京信息科技大学 Laminar flow control method of flow cytometer
CN108043163A (en) * 2017-12-13 2018-05-18 华中科技大学 A kind of control system and its intelligent control method for removing fine particle
CN112327949A (en) * 2020-11-05 2021-02-05 中国人民解放军国防科技大学 Intelligent flow control system and control method for air-breathing electric propulsion
CN114991920A (en) * 2022-05-23 2022-09-02 重庆文理学院 Treatment system for nitrogen oxide in diesel engine automobile exhaust

Similar Documents

Publication Publication Date Title
CN103822861A (en) Diesel engine exhaust particle concentration detector based on fuzzy PID (proportional-integral-derivative) control
CN102710336B (en) Be applied to the working point control device and method of MZ modulator
CN102109556B (en) Circuit for detecting dynamic weak capacitance of MEMS device
US9000748B2 (en) Maximum power point tracking controllers and maximum power point tracking methods
CN104201946A (en) Brushless direct-current motor fuzzy PI controller based on FPGA
CN104833823A (en) System and method for improving dynamic performance of capacitive-type micromechanical accelerometer
CN106525131A (en) Road side breathing zone air quality online monitoring system
CN102998280A (en) Online gas detecting method and device
CN102155424A (en) PWM (Pulse Wavelength Modulation) speed regulating module for cooling fan of automobile engine
CN103913610A (en) Current sampling circuit with temperature drifting compensation function
Wang et al. Concentration measurement of three-phase flow based on multi-sensor data fusion using adaptive fuzzy inference system
CN108444935A (en) A kind of temperature-compensation method and compensation device of non-dispersive infrared gas sensor
CN107063980A (en) A kind of flow cytometer scatters optical detection device
CN104539264B (en) Filtering method and filter circuit applied to EPS power-supply systems
CN103295628B (en) A kind of double-end active equivalent electrical circuit of lotus control memristor
CN105159390B (en) Dynamic variable step Maximum power point tracing in photovoltaic system with interference rejection ability
CN103454949A (en) Anti-interference self-adjusting microcontroller system and controlling method thereof
CN106656084A (en) Automatic level control loop
CN204101413U (en) A kind of particle pick-up unit measuring the relevant information of particulate in air
CN104980105B (en) A kind of method for testing solar photovoltaic generation system MPPT maximum power point tracking algorithm performance
CN104811106B (en) The method and system of direct current generator closed-loop control
CN203798845U (en) Current sampling circuit with temperature drift compensation
CN203719711U (en) Exciting circuit of electro-magnetic flow meter
CN206312366U (en) High accuracy road traffic volume detection device
CN106769812B (en) A kind of flow cytometer laminar flow control system and control method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20140528