CN110594003A - Multi-signal coupling cooling control method - Google Patents
Multi-signal coupling cooling control method Download PDFInfo
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- CN110594003A CN110594003A CN201910787349.7A CN201910787349A CN110594003A CN 110594003 A CN110594003 A CN 110594003A CN 201910787349 A CN201910787349 A CN 201910787349A CN 110594003 A CN110594003 A CN 110594003A
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- Prior art keywords
- fan
- rotating speed
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- control
- cooling
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P2005/025—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers using two or more air pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P2005/105—Using two or more pumps
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a multi-signal coupling cooling control method, which is used for regulating and controlling the operation of a fan on an automobile engine and comprises the following steps: s1, acquiring a first operating parameter of the automobile engine through a feedforward controller, and acquiring a second operating parameter of the cooling system through a feedback controller; s2, carrying out coupling algorithm processing on the first operating parameter and the second operating parameter through a multi-signal coupling algorithm to obtain a target temperature control parameter of the cooling system; s3, converting the target temperature control parameter into a control signal for controlling the running speed of the fan through a control unit; s4, the cooling system receives the first control signal and the second control signal so that the automobile engine can operate at the target temperature. The multi-signal coupling cooling control method realizes the precise control of the temperature of the automobile engine by using a feedforward and feedback combined control strategy, and has the characteristics of high response speed and low power consumption.
Description
Technical Field
The invention relates to a multi-signal coupling cooling control method, in particular to a multi-signal coupling cooling control method applied to temperature control and adjustment of an automobile engine.
Background
With the rapid development of the new generation information communication technology and the continuous and deep integration of the advanced manufacturing technology, a new industrial revolution represented by intelligent manufacturing is promoted globally, and digitization, networking and intellectualization increasingly become the main trend of the future manufacturing development.
At present, the development of the cooling mechanism and the cooling system structure form of the engine for the vehicle tends to mature: in the last 30 years, the study of a novel cooling mechanism, namely a boiling heat exchange technology, is started by scholars of Nukiyama and the like. Engines such as BMW N52 series, Audi EA888 series, popular EA11 series, etc. also start to adopt multi-circuit cooling system structures. Therefore, the vehicle engine system enterprises, whether domestic or foreign, focus on the development of intelligent sensing and control equipment, so that a new generation of engine intelligent fan based on multi-sensing coupling precise temperature control becomes a research and development focus, and the high-point of intelligent cooling of the vehicle engine is preempted.
However, since the engine cooling system is a complex system with multiple inputs and multiple outputs and non-linearity and hysteresis effects, it is difficult to achieve precise control of the temperature of the coolant and to reduce the energy consumption of accessories of the cooling system to the maximum extent by using simple switching value control or PID control algorithm.
In view of the above, it is necessary to provide a new fan control system for controlling and regulating the temperature of an automobile engine to solve the above problems.
Disclosure of Invention
The invention aims to provide a multi-signal coupling cooling control method, which realizes the precise control of the temperature of an automobile engine by using a feedforward and feedback combined control strategy and has the characteristics of high response speed and low power consumption.
In order to achieve the above object, the present invention provides a multi-signal coupling cooling control method for controlling the operation of a fan on an automobile engine, wherein the automobile engine comprises an engine main body and a cooling system connected to the engine main body, the cooling system comprises a fan and a liquid cooling device, and the method comprises the following steps:
s1, acquiring a first operating parameter of the automobile engine through a feedforward controller, and acquiring a second operating parameter of the cooling system through a feedback controller;
s2, carrying out coupling algorithm processing on the first operating parameter and the second operating parameter through a multi-signal coupling algorithm to obtain a target temperature control parameter of the cooling system;
s3, converting the target temperature control parameter into a first control signal for controlling the running speed of the fan and a second control signal for controlling the running of the water pump through a control unit;
and S4, the cooling system receives the first control signal and the second control signal, controls the rotating speed of the fan through the first control signal, and controls the cooling temperature of the liquid cooling device through the second control signal, so that the automobile engine runs at the target temperature.
As a further development of the invention, the first operating parameter comprises a vehicle operating speed, a rotational speed of a vehicle engine, an engine load factor of the vehicle engine, and an ambient temperature.
As a further development of the invention, the second operating parameter comprises at least an actual temperature at which the vehicle engine is operated and a target temperature at which the vehicle engine is operated.
As a further improvement of the present invention, the step S2 specifically includes:
s21, the feedforward controller obtains a first fan rotating speed of a fan in the cooling system and a first water pump rotating speed of a water pump in the liquid cooling device according to the first operation parameter;
s22, the feedback controller obtains a second fan rotating speed of the fan and a second water pump rotating speed of a water pump in the liquid cooling device according to the second operation parameter;
and S23, acquiring a target temperature control parameter of the cooling system according to the first fan rotating speed, the first water pump rotating speed, the second fan rotating speed and the second water pump rotating speed in a coupling mode.
As a further improvement of the present invention, the target temperature control parameter includes a target rotation speed of a fan of the fan and a target rotation speed of a water pump of the water pump.
As a further improvement of the present invention, the feedforward controller is a MAP feedforward controller, and the first fan rotational speed and the first water pump rotational speed are obtained by the MAP feedforward controller through MAP fitting.
As a further improvement of the invention, the feedback controller is a PID feedback controller.
As a further improvement of the present invention, in step S3, the control signal is a PMW pulse width control signal.
As a further improvement of the present invention, the fan is an electronic silicone oil clutch fan, the electronic silicone oil clutch fan includes a silicone oil clutch, and the silicone oil clutch is in signal connection with the control unit.
The invention has the beneficial effects that: according to the multi-signal coupling cooling control method, a feedforward and feedback combined control strategy is used, so that on one hand, the response of a cooling system to the working condition and the environmental change of an automobile engine is improved through a feedforward controller, and meanwhile, the power consumption of each part in the cooling system is considered; on the other hand, the temperature of the liquid cooling device in the cooling system is controlled to be a designated value through the feedback controller, so that the quick response and low power consumption of the precision control of the automobile engine are ensured while the precision control of the automobile engine temperature is realized.
Drawings
FIG. 1 is a flow chart of a multi-signal coupled cooling control method of the present invention.
Fig. 2 is a flowchart of step S2 in fig. 1.
Fig. 3 is a control structure block diagram of the multi-signal coupling cooling control method of the present invention.
Fig. 4 is a block diagram of a control structure of the MAP feedforward controller in fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It is to be understood that in the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a multi-signal coupling cooling control method for controlling the operation of a fan of an automobile engine according to the present invention is shown. In the present invention, the automobile engine (not shown) includes an engine main body and a cooling system connected to the engine main body, the cooling system includes a fan and a liquid cooling device, and the cooling system may be provided integrally with the engine main body or may be provided separately or partially separately from the engine main body.
Specifically, the multi-signal coupling cooling control method includes the steps of:
s1, acquiring a first operating parameter of the automobile engine through a feedforward controller, and acquiring a second operating parameter of the cooling system through a feedback controller;
s2, carrying out coupling algorithm processing on the first operating parameter and the second operating parameter through a multi-signal coupling algorithm to obtain a target temperature control parameter of the cooling system;
s3, converting the target temperature control parameter into a first control signal for controlling the running speed of the fan and a second control signal for controlling the running of the water pump through a control unit;
and S4, the cooling system receives the first control signal and the second control signal, controls the rotating speed of the fan through the first control signal, and controls the cooling temperature of the liquid cooling device through the second control signal, so that the automobile engine runs at the target temperature.
The following description will explain the steps S1 to S4 in detail.
In the step S1, the first operation parameters include a vehicle operation speed v, a rotation speed n of a vehicle engine, an engine load rate phi of the vehicle engine, and an ambient temperature Tatm。
Further, the second operating parameter at least comprises an actual temperature T of the operation of the automobile enginecAnd a target temperature T at which the engine of the vehicle is operatedtarIn the present invention, the second operating parameter is specifically the actual temperature TcAnd the target temperature TtarThe difference Δ T of (d).
Referring to fig. 2 and fig. 3, the step S2 specifically includes:
s21, the feedforward controller obtains a first fan rotating speed f of a fan in the cooling system according to the first operation parameter1And a first water pump speed p of a water pump in the liquid cooling device1；
S22, the feedback controller obtains a second fan rotating speed f of the fan according to the second operation parameter2And a second water pump speed p of the water pump in the liquid cooling device2；
S23, according to the first fan rotating speed f1The first water pump rotating speed p1The second fan speed f2And the second water pump speed p2And coupling to obtain a target temperature control parameter N of the cooling system.
In the present invention, the feedforward controller is a MAP feedforward controller, and the first fan speed f1And the first water pump rotating speed p1And establishing and fitting the MAP by the MAP feedforward controller.
In this embodiment, the first water pump speedp1And the first fan speed f1For removing heat Q by cooling liquid in liquid cooling apparatuscAnd the running speed v and the ambient temperature T of the automobileatmFitting obtains, specifically, the heat dissipation QcAnd receiving the rotating speed n of the automobile engine and the engine load rate phi of the automobile engine for the MAP feedforward controller, and obtaining the engine load rate phi through fitting after a component cooling liquid heat dissipation MAP graph QcMAP (shown in a figure 4).
Further, the feedback controller is a PID feedback controller, and the target temperature control parameter N includes a fan target rotation speed N of the fanfAnd a target water pump rotation speed n of the water pumpp。
Specifically, the fan target rotation speed nfIs the first fan speed f1And the second fan speed f2By MAP graph nfMAP coupling calculation is carried out to obtain the target rotating speed n of the water pumppFor the first water pump speed p1And the second water pump rotation speed p2By MAP graph npAnd obtaining MAP coupling calculation.
Specifically, in the step S3, the first control signal is a PMW pulse width control signal, so that on one hand, the inertia of the automobile engine is fully utilized as a power source of the fan, and on the other hand, when the fan and the automobile engine are only engaged through a simple gear or driven by a belt, the rotating speed of the fan is singly changed along with the rotating speed of the automobile engine, so that the problems of loss of the automobile engine and increase of oil consumption caused by excessive rotation of the fan of the electronic silicone oil clutch when the heat dissipation target requirement is low are solved.
Preferably, in the present invention, the control unit is a driving computer ECU, so that the structure of the stepless speed regulation fan control system 100 is simplified, the stepless speed regulation fan control system 100 of the present invention is conveniently integrated with engines of various automobiles, and the applicability of the stepless speed regulation fan control system 100 of the present invention is effectively improved.
The step S4 specifically includes: the cooling system receives the first control signal and the second control signal, controls the rotating speed of the fan through the first control signal, and controls the cooling temperature of the liquid cooling device through the second control signal, so that the automobile engine runs at a target temperature.
In a preferred embodiment of the present invention, the fan is an electronic silicone oil clutch fan, and the electronic silicone oil clutch fan includes a silicone oil clutch, and the silicone oil clutch is in signal connection with the control unit. Specifically, the silicone oil clutch can rotate under the control of the control unit and adjust the filling amount of the silicone oil in the silicone oil clutch so as to further realize flexible closed-loop control of the fan in the cooling system.
In conclusion, the multi-signal coupling cooling control method disclosed by the invention has the advantages that through the combined control strategy of feedforward and feedback, on one hand, the response of the cooling system to the working condition and the environmental change of the automobile engine is improved through the feedforward controller, and meanwhile, the power consumption of each part in the cooling system is considered; on the other hand, the temperature of the liquid cooling device in the cooling system is controlled to be a designated value through the feedback controller, so that the quick response and low power consumption of the precision control of the automobile engine are ensured while the precision control of the automobile engine temperature is realized.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (9)
1. A multi-signal coupling cooling control method is used for regulating and controlling the operation of a fan on an automobile engine, the automobile engine comprises an engine main body and a cooling system connected to the engine main body, the cooling system comprises the fan and a liquid cooling device, and the method is characterized by comprising the following steps:
s1, acquiring a first operating parameter of the automobile engine through a feedforward controller, and acquiring a second operating parameter of the cooling system through a feedback controller;
s2, carrying out coupling algorithm processing on the first operating parameter and the second operating parameter through a multi-signal coupling algorithm to obtain a target temperature control parameter of the cooling system;
s3, converting the target temperature control parameter into a control signal for controlling the running speed of the fan through a control unit;
and S4, the cooling system receives the first control signal and the second control signal, controls the rotating speed of the fan through the first control signal, and controls the cooling temperature of the liquid cooling device through the second control signal, so that the automobile engine runs at the target temperature.
2. The multi-signal coupled cooling control method of claim 1, wherein: the first operating parameter includes a vehicle operating speed, a rotational speed of a vehicle engine, an engine load factor of the vehicle engine, and an ambient temperature.
3. The multi-signal coupled cooling control method of claim 1, wherein: the second operating parameter includes at least an actual temperature at which the vehicle engine is operating and a target temperature at which the vehicle engine is operating.
4. The multi-signal coupling cooling control method according to claim 1, wherein the step S2 specifically includes:
s21, the feedforward controller obtains a first fan rotating speed of a fan in the cooling system and a first water pump rotating speed of a water pump in the liquid cooling device according to the first operation parameter;
s22, the feedback controller obtains a second fan rotating speed of the fan and a second water pump rotating speed of a water pump in the liquid cooling device according to the second operation parameter;
and S23, acquiring a target temperature control parameter of the cooling system according to the first fan rotating speed, the first water pump rotating speed, the second fan rotating speed and the second water pump rotating speed in a coupling mode.
5. The multi-signal coupled cooling control method of claim 4, wherein: the target temperature control parameters comprise a target rotating speed of a fan of the fan and a target rotating speed of a water pump of the water pump.
6. The multi-signal coupled cooling control method of claim 4, wherein: the feedforward controller is a MAP feedforward controller, and the first fan rotating speed and the first water pump rotating speed are obtained through the MAP feedforward controller through MAP image fitting.
7. The multi-signal coupled cooling control method of claim 4, wherein: the feedback controller is a PID feedback controller.
8. The multi-signal coupled cooling control method of claim 1, wherein: in step S3, the control signal is a PMW pulse width control signal.
9. The multi-signal coupled cooling control method of claim 1, wherein: the fan is an electronic silicone oil clutch fan, the electronic silicone oil clutch fan comprises a silicone oil clutch, and the silicone oil clutch is in signal connection with the control unit.
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| CN201910787349.7A CN110594003A (en) | 2019-08-23 | 2019-08-23 | Multi-signal coupling cooling control method |
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| CN201910787349.7A CN110594003A (en) | 2019-08-23 | 2019-08-23 | Multi-signal coupling cooling control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151906A (en) * | 2020-08-31 | 2020-12-29 | 珠海格力电器股份有限公司 | Battery cooling method, device and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2425619A (en) * | 2005-03-22 | 2006-11-01 | Visteon Global Tech Inc | Method of IC Engine cooling incorporating fuzzy logic |
| CN102135030A (en) * | 2010-01-22 | 2011-07-27 | 陈宁 | Intelligent automobile engine cooling system |
| CN107869383A (en) * | 2017-11-03 | 2018-04-03 | 吉林大学 | Automobile engine heat management system models and control method |
| CN109458252A (en) * | 2018-11-02 | 2019-03-12 | 潍柴动力股份有限公司 | A kind of control method of engine-cooling system, control device and engine |
| CN109488754A (en) * | 2017-09-12 | 2019-03-19 | 长城汽车股份有限公司 | Speed changer cooling system, control method and vehicle |
-
2019
- 2019-08-23 CN CN201910787349.7A patent/CN110594003A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2425619A (en) * | 2005-03-22 | 2006-11-01 | Visteon Global Tech Inc | Method of IC Engine cooling incorporating fuzzy logic |
| CN102135030A (en) * | 2010-01-22 | 2011-07-27 | 陈宁 | Intelligent automobile engine cooling system |
| CN109488754A (en) * | 2017-09-12 | 2019-03-19 | 长城汽车股份有限公司 | Speed changer cooling system, control method and vehicle |
| CN107869383A (en) * | 2017-11-03 | 2018-04-03 | 吉林大学 | Automobile engine heat management system models and control method |
| CN109458252A (en) * | 2018-11-02 | 2019-03-12 | 潍柴动力股份有限公司 | A kind of control method of engine-cooling system, control device and engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151906A (en) * | 2020-08-31 | 2020-12-29 | 珠海格力电器股份有限公司 | Battery cooling method, device and system |
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Application publication date: 20191220 |