CN116291933A - Engine sudden loading and unloading load control strategy based on active disturbance rejection control - Google Patents
Engine sudden loading and unloading load control strategy based on active disturbance rejection control Download PDFInfo
- Publication number
- CN116291933A CN116291933A CN202310107910.9A CN202310107910A CN116291933A CN 116291933 A CN116291933 A CN 116291933A CN 202310107910 A CN202310107910 A CN 202310107910A CN 116291933 A CN116291933 A CN 116291933A
- Authority
- CN
- China
- Prior art keywords
- engine
- rotating speed
- disturbance rejection
- transient
- change rate
- 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
Links
- 238000011217 control strategy Methods 0.000 title claims abstract description 16
- 230000001052 transient effect Effects 0.000 claims abstract description 43
- 230000008859 change Effects 0.000 claims abstract description 28
- 239000010724 circulating oil Substances 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims abstract description 15
- 239000007924 injection Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 2
- 230000004043 responsiveness Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/045—Detection of accelerating or decelerating state
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses an engine sudden-loading and sudden-unloading load control strategy based on active disturbance rejection control, and relates to an engine control technology. Acquiring the current rotating speed and the target rotating speed of an engine, and judging whether an engine transient state mark is established according to the current rotating speed and the target rotating speed; if the engine is built, correcting the circulating oil injection quantity by adopting an active disturbance rejection control mode related to the rotating speed change rate and the circulating oil injection quantity, and acquiring the actual rotating speed of the engine by adopting a PID control mode; otherwise, the actual rotating speed of the engine is obtained through a PID control mode. The invention improves the responsiveness and the disturbance rejection capability of the engine under the sudden loading and unloading working condition.
Description
Technical Field
The invention relates to an engine control technology, in particular to an engine sudden loading and unloading load control strategy based on active disturbance rejection control.
Background
The control scheme for transient response in high power, large bore diesel engines is typically Proportional Integral Derivative (PID) control. For example, generator sets typically employ such diesel engines. The control strategy of the generator set adopts PID control, so that the generator set has the advantages of good stability, high reliability and the like. However, the PID control mode is suitable for a system with little variation, and the disturbance rejection effect of the PID control is general for the application of the sudden load and sudden load phenomenon of the generator set.
However, as customer demands for transient response of the genset become higher, the engine must also be more robust against harassment during sudden load conditions. The anti-jamming capability of the engine for sudden loading and unloading is an important performance index for measuring the product, and the product competitiveness is directly affected.
Therefore, we propose an engine dump load control strategy based on active disturbance rejection control.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an engine sudden-loading and sudden-unloading load control strategy based on active disturbance rejection control, which improves the responsiveness and the disturbance rejection capability of the engine in sudden-loading and sudden-unloading load working conditions.
The invention relates to an engine sudden-adding sudden-unloading load control strategy based on active disturbance rejection control, which comprises the steps of obtaining the current rotating speed and the target rotating speed of an engine, and judging whether an engine transient state mark is established according to the current rotating speed and the target rotating speed; if the engine is built, correcting the circulating oil injection quantity by adopting an active disturbance rejection control mode related to the rotating speed change rate and the circulating oil injection quantity, and acquiring the actual rotating speed of the engine by adopting a PID control mode; otherwise, the actual rotating speed of the engine is obtained through a PID control mode.
The active-disturbance-rejection control mode is that,
the method comprises the steps of firstly, calibrating and correcting the torque percentage according to the rotating speed change rate; correcting the output torque according to the corrected torque percentage to obtain a target torque;
the second step, calibrating the circulating oil injection quantity according to the target torque; obtaining a corrected rotating speed change rate when the engine runs with the calibrated circulating oil injection quantity;
thirdly, judging whether the corrected rotating speed change rate reaches the condition of exiting the transient mark; if so, switching to a PID control mode; otherwise, go to the first step.
The transient flag consists of an abrupt transient threshold range and an abrupt transient threshold range.
The threshold range of the transient state is the threshold range,
the rotation speed difference threshold range of the current rotation speed and the target rotation speed is 3-30 rpm; the threshold range of the rotating speed change rate is-50 to-500 rpm/s.
The transient-state threshold range of the abrupt decrease is,
the rotation speed difference threshold range of the current rotation speed and the target rotation speed is-3 to-30 rpm; the speed change rate threshold range is 50-500 rpm/s.
The exit transient flag condition is that the modified rotational speed change rate is greater than a maximum threshold value of the transient threshold value range of abrupt addition, or the modified rotational speed change rate is less than a minimum threshold value of the transient threshold value range of abrupt addition.
Advantageous effects
The invention has the advantages that: the transient working condition of the engine is judged, and the combined control module of the active disturbance rejection control and the PID control is carried out after the engine enters the transient working condition, so that the responsiveness and the disturbance rejection capability of the engine in the sudden loading and unloading working condition are improved.
Drawings
FIG. 1 is a control strategy flow chart of the present invention;
FIG. 2 is a graph of percent corrected torque for transient load corrected sudden loading in accordance with the present invention.
Detailed Description
The invention is further described below in connection with the examples, which are not to be construed as limiting the invention in any way, but rather as falling within the scope of the claims.
Referring to fig. 1, according to the engine sudden-loading and sudden-unloading load control strategy based on active disturbance rejection control, the current rotating speed and the target rotating speed of an engine are obtained. The target rotating speed is the calibrated rotating speed under the current circulating oil injection quantity. And acquiring a real-time rotating speed difference and a rotating speed change rate through the current rotating speed and the target rotating speed. And judging whether the transient state mark of the engine is on the basis of the real-time rotation speed difference and the rotation speed change rate.
The transient flag is composed of an abrupt transient threshold range and an abrupt transient threshold range.
Specifically, the transient threshold value is suddenly added, and the rotation speed difference threshold value between the current rotation speed and the target rotation speed is 3-30 rpm; the threshold range of the rotating speed change rate is-50 to-500 rpm/s.
The transient threshold value range of abrupt decrease is that the threshold value range of the rotation speed difference between the current rotation speed and the target rotation speed is-3 to the upper
-30rpm; the speed change rate threshold range is 50-500 rpm/s.
That is, when both the real-time rotational speed difference and the rotational speed change rate are simultaneously within the corresponding transient threshold ranges, it may be determined that the transient flag is established. And when the transient state mark is established, correcting the circulating oil injection quantity by adopting an active disturbance rejection control mode related to the rotating speed change rate and the circulating oil injection quantity, and then acquiring the actual rotating speed of the engine by adopting a PID control mode.
Wherein, the specific implementation mode of the active disturbance rejection control mode is that,
first, as shown in fig. 2, the correction torque percentage is calibrated according to the rotational speed change rate. And correcting the output torque by the correction torque percentage to obtain the target torque.
Step two, calibrating the circulating oil injection quantity according to the target torque; and obtaining the corrected rotating speed change rate when the engine runs with the calibrated circulating oil injection quantity.
And thirdly, judging whether the corrected rotating speed change rate reaches the condition of exiting the transient state mark. The transient state marking condition of exiting the sudden transient state threshold range is that the corrected rotating speed change rate is larger than the maximum threshold value of the sudden transient state threshold range. The transient flag condition of exiting the transient threshold of abrupt decrease range is that the modified rotation speed change rate is less than the minimum threshold of the transient threshold of abrupt decrease range.
If the exit transient flag condition is reached, the PID control mode is switched in; otherwise, go to the first step.
If the engine transient state mark is not established, the actual rotating speed of the engine is obtained through a PID control mode.
While only the preferred embodiments of the present invention have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (6)
1. An engine sudden-loading and unloading load control strategy based on active disturbance rejection control is characterized in that the current rotating speed and the target rotating speed of an engine are obtained, and whether an engine transient state mark is established is judged according to the current rotating speed and the target rotating speed; if the engine is built, correcting the circulating oil injection quantity by adopting an active disturbance rejection control mode related to the rotating speed change rate and the circulating oil injection quantity, and acquiring the actual rotating speed of the engine by adopting a PID control mode; otherwise, the actual rotating speed of the engine is obtained through a PID control mode.
2. An engine dump load control strategy based on active disturbance rejection control according to claim 1, wherein the active disturbance rejection control mode is,
the method comprises the steps of firstly, calibrating and correcting the torque percentage according to the rotating speed change rate; correcting the output torque according to the corrected torque percentage to obtain a target torque;
the second step, calibrating the circulating oil injection quantity according to the target torque; obtaining a corrected rotating speed change rate when the engine runs with the calibrated circulating oil injection quantity;
thirdly, judging whether the corrected rotating speed change rate reaches the condition of exiting the transient mark; if so, switching to a PID control mode; otherwise, go to the first step.
3. An engine dump load control strategy based on active disturbance rejection control according to claim 2, wherein the transient flag consists of a dump transient threshold range and a dump transient threshold range.
4. An engine dump load control strategy based on active disturbance rejection control according to claim 3, wherein the dump transient threshold range is,
the rotation speed difference threshold range of the current rotation speed and the target rotation speed is 3-30 rpm; the threshold range of the rotating speed change rate is-50 to-500 rpm/s.
5. An engine dump load control strategy based on active disturbance rejection control according to claim 4, wherein the dump transient threshold range is,
the rotation speed difference threshold range of the current rotation speed and the target rotation speed is-3 to-30 rpm; the speed change rate threshold range is 50-500 rpm/s.
6. An engine dump load control strategy based on active disturbance rejection control according to claim 5, wherein the exit transient flag condition is,
the modified speed change rate is greater than a maximum threshold value of the transient threshold value range or the modified speed change rate is less than a minimum threshold value of the transient threshold value range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310107910.9A CN116291933A (en) | 2023-02-13 | 2023-02-13 | Engine sudden loading and unloading load control strategy based on active disturbance rejection control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310107910.9A CN116291933A (en) | 2023-02-13 | 2023-02-13 | Engine sudden loading and unloading load control strategy based on active disturbance rejection control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116291933A true CN116291933A (en) | 2023-06-23 |
Family
ID=86789720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310107910.9A Pending CN116291933A (en) | 2023-02-13 | 2023-02-13 | Engine sudden loading and unloading load control strategy based on active disturbance rejection control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116291933A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114347989A (en) * | 2021-12-13 | 2022-04-15 | 潍柴动力股份有限公司 | Vehicle speed control method and device |
-
2023
- 2023-02-13 CN CN202310107910.9A patent/CN116291933A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114347989A (en) * | 2021-12-13 | 2022-04-15 | 潍柴动力股份有限公司 | Vehicle speed control method and device |
| CN114347989B (en) * | 2021-12-13 | 2024-04-16 | 潍柴动力股份有限公司 | Vehicle speed control method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7665352B2 (en) | Adaptive oil pressure fault detection | |
| CN116291933A (en) | Engine sudden loading and unloading load control strategy based on active disturbance rejection control | |
| JP7077652B2 (en) | Fuel cell system and fuel cell system control method | |
| CN113464263B (en) | Control method and system for electronic thermostat of commercial vehicle | |
| CN112594073B (en) | Control method of air-fuel ratio of engine and engine | |
| CN111828184B (en) | Control method and system for quick response of sudden loading and unloading of electric control generator set | |
| EP1775450B1 (en) | Method of operating an internal combustion engine and internal combustion engine system | |
| CN114962022B (en) | Control method for improving intake pressure fluctuation | |
| WO2006127794A2 (en) | Method and system for controlling fuel injection timing to maintain desired peak cylinder pressure for high altitude operation | |
| US6925985B2 (en) | Method and device for controlling the speed of an internal combustion engine | |
| WO2011025003A1 (en) | Marine engine control system and method | |
| CN111140379B (en) | Control method for switching cylinder-breaking mode | |
| WO2011025005A1 (en) | Marine engine control system and method | |
| CN115380700A (en) | Combine harvester engine power self-adaptive control system and method | |
| US20160329855A1 (en) | Control of a motor in an electric supercharger | |
| CN110094275B (en) | Engine control method for tractor | |
| CN114542263A (en) | Cooling water temperature regulation and control method and control system | |
| JPH0128214B2 (en) | ||
| JP2010242722A (en) | Turbocharger driving control method and device thereof | |
| CN112963254B (en) | Engine control method and engine | |
| CN116817843A (en) | Bearing bush melting detection method and diesel engine detection method | |
| CN103233806A (en) | Intelligent management method for engine energy | |
| CN115478581B (en) | Control method and control device of hydraulic system and engineering vehicle | |
| CN115030832A (en) | Rail pressure control method and device for engine, storage medium and vehicle | |
| CN115013174B (en) | Control method of EGR (exhaust gas Recirculation) system, EGR system and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |