CN112664646B

CN112664646B - Clutch control method, device, equipment, medium and product

Info

Publication number: CN112664646B
Application number: CN202110004721.XA
Authority: CN
Inventors: 韩福强; 邓金涛; 裴换鑫; 徐亚美
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2022-06-28
Anticipated expiration: 2041-01-04
Also published as: CN112664646A

Abstract

The embodiment of the invention provides a method, a device, equipment, a medium and a product for controlling a clutch, wherein the method comprises the following steps: acquiring a control request of a clutch, wherein the control request comprises a control type; determining the current working condition of the target vehicle according to the control request; determining a corresponding clutch control strategy according to the current working condition; and controlling the clutch to be separated or combined according to the corresponding clutch control strategy and control type. The clutch can be controlled according to the current working condition of the target vehicle and the clutch control strategy most suitable for the current working condition, so that the control requirements under different working conditions can be met, and the optimal control effect is achieved.

Description

Clutch control method, device, equipment, medium and product

Technical Field

The embodiment of the invention relates to the technical field of vehicles, in particular to a method, a device, equipment, a medium and a product for controlling a clutch.

Background

With the development of vehicles, automatic transmission vehicles have been developed. Automatic transmissions are used in automatic vehicles. The automatic transmission generally adopts an electric control pneumatic actuating mechanism to control a piston rod in a cylinder to act, and finally achieves the purpose of controlling the separation and combination of the electric control pneumatic clutch. Wherein, four solenoid valves are generally adopted by the electric control pneumatic actuating mechanism. Two air inlet valves and air release valves with larger apertures and two air inlet valves and air release valves with smaller apertures.

In the prior art, when an electric control pneumatic clutch is controlled, a single PID control algorithm is generally adopted to realize a fast-slow-fast control process. But in a parallel system vehicle, there are different operating conditions. Each operating condition requires different clutch control requirements. Therefore, the existing control method for the electric control starting clutch cannot meet the control requirement under different working conditions and cannot achieve better control effect.

Disclosure of Invention

The embodiment of the invention provides a method, a device, equipment, a medium and a product for controlling a clutch, and solves the technical problems that the control method for an electric control starting clutch in the prior art cannot meet the control requirements under different working conditions and cannot achieve a better control effect.

In a first aspect, an embodiment of the present invention provides a method for controlling a clutch, including:

acquiring a control request of a clutch, wherein the control request comprises a control type;

determining the current working condition of the target vehicle according to the control request;

determining a corresponding clutch control strategy according to the current working condition;

and controlling the clutch to be separated or combined according to the corresponding clutch control strategy and control type.

Optionally, the method described above, wherein determining the current operating condition of the target vehicle according to the control request includes:

acquiring the current rotating speed condition of an input shaft of a gearbox and the current rotating speed condition of an engine of a target vehicle according to the control request;

and determining the current working condition of the target vehicle according to the current rotating speed condition of the input shaft of the gearbox and the current rotating speed condition of the engine.

Optionally, in the method described above, the current operating condition is any one of the following operating conditions:

the engine starting condition is a static motor back-dragging engine working condition, an engine mode or a static gear shifting speed regulating starting working condition, a driving back-dragging engine starting working condition and an engine speed regulating intervening working condition.

Optionally, in the method described above, if the current operating condition is a static motor reverse engine operating condition, determining a corresponding clutch control strategy according to the current operating condition includes:

determining a corresponding clutch control strategy as a double-valve maximum duty ratio control strategy according to the working condition of the static motor towing engine;

or if the current working condition is an engine mode or a static gear-shifting speed-regulating starting working condition, determining a corresponding clutch control strategy according to the current working condition, wherein the clutch control strategy comprises the following steps:

determining the current position of the clutch and a plurality of preset position intervals according to the engine mode or the static gear-shifting speed-regulating starting condition, if the current position of the clutch is determined to be in the minimum combination position interval of the clutch corresponding to the sliding friction starting position and the maximum torque transmission, determining the corresponding clutch control strategy to be a PID control strategy, and if the current position of the clutch is determined to be in other position intervals, determining the corresponding clutch control strategy to be a segmented control strategy;

or if the current working condition is determined to be a driving dragging-backward engine starting working condition or an engine speed regulation intervention working condition, determining a corresponding clutch control strategy according to the current working condition, wherein the clutch control strategy comprises the following steps:

and determining the corresponding clutch control strategy as a segmented control strategy according to the starting working condition of the driving dragging engine or the speed regulating intervention working condition of the engine.

Optionally, in the method described above, the corresponding clutch control strategy is a segment control strategy, and the control type is a combination control;

the controlling the clutch to be separated or combined according to the corresponding clutch control strategy and control type comprises the following steps:

acquiring the current position of a clutch, a plurality of preset position intervals and a first target position;

if the current position of the clutch is determined to be between the mechanical maximum separation position of the clutch and the maximum separation position controlled by the clutch, controlling the fast-closing electromagnetic valve and the slow-closing electromagnetic valve to work according to the corresponding duty ratio;

if the current position of the clutch is determined to be in the interval between the maximum separation position and the sliding mill starting position controlled by the clutch, controlling the quick-closing electromagnetic valve to work according to a PID control strategy;

if the current position of the clutch is determined to be in the clutch minimum combination position interval corresponding to the sliding mill starting position and the maximum torque transmission, controlling the slow-closing electromagnetic valve to work according to a PID control strategy;

if the current position of the clutch is determined to be between the clutch minimum combination position corresponding to the maximum torque transmission and the clutch mechanical minimum combination position, simultaneously controlling the fast-closing electromagnetic valve and the slow-closing electromagnetic valve to work according to the maximum duty ratio;

and if the current position of the clutch is monitored to be located at the first target position, controlling the clutch to stop combining.

Optionally, the method as described above, further comprising:

and if the current position of the clutch is determined to be outside the clutch combination overshoot interval, controlling the slow-speed power distribution electromagnetic valve to work to a first target position according to the minimum duty ratio.

Optionally, in the method described above, the corresponding clutch control strategy is a segment control strategy, and the control type is a separation control;

acquiring the current position of the clutch, a plurality of preset position intervals and a second target position;

if the second target position of the clutch is determined to be between the sliding mill starting position and the maximum separation position interval controlled by the clutch, when the current position of the clutch is between the mechanical minimum combination position of the clutch and the sliding mill position range, the fast-distribution electromagnetic valve and the slow-distribution electromagnetic valve are controlled to work at the same time, and when the current position of the clutch is between the sliding mill position range and the second target position range, the slow-distribution electromagnetic valve is controlled to work according to a PID control strategy;

and if the second target position of the clutch is determined to be less than or equal to the sliding mill initial position, controlling the slow-speed electromagnetic valve to work according to a PID control strategy.

In a second aspect, an embodiment of the present invention provides a control device for a clutch, including:

the device comprises a request acquisition module, a clutch control module and a clutch control module, wherein the request acquisition module is used for acquiring a control request of a clutch, and the control request comprises a control type;

the working condition determining module is used for determining the current working condition of the target vehicle according to the control request;

the strategy determining module is used for determining a corresponding clutch control strategy according to the current working condition;

and the control module is used for controlling the clutch to be separated or combined according to the corresponding clutch control strategy and control type.

Optionally, in the apparatus described above, the operating condition determining module is specifically configured to:

acquiring the current rotating speed condition of an input shaft of a gearbox and the current rotating speed condition of an engine of a target vehicle according to the control request; and determining the current working condition of the target vehicle according to the current rotating speed condition of the input shaft of the gearbox and the current rotating speed condition of the engine.

Optionally, in the apparatus described above, the current operating condition is any one of the following operating conditions:

Optionally, in the apparatus described above, if the current operating condition is a static motor reverse-dragging engine operating condition, the policy determination module is specifically configured to:

determining a corresponding clutch control strategy as a double-valve maximum duty ratio control strategy according to the working condition of the static motor back-dragging engine;

or, if the current working condition is an engine mode or a static gear-shifting speed-regulating starting working condition, the strategy determining module is specifically configured to:

or, if it is determined that the current working condition is a driving reverse dragging engine starting working condition or an engine speed regulation intervention working condition, the strategy determination module is specifically configured to:

and determining a corresponding clutch control strategy as a segmented control strategy according to the starting working condition of the driving and dragging-backward engine or the speed regulation intervention working condition of the engine.

Optionally, in the apparatus described above, the corresponding clutch control strategy is a segment control strategy, and the control type is combination control;

the control module is specifically configured to: acquiring the current position of a clutch, a plurality of preset position intervals and a first target position; if the current position of the clutch is determined to be between the mechanical maximum separation position of the clutch and the maximum separation position controlled by the clutch, controlling the fast-closing electromagnetic valve and the slow-closing electromagnetic valve to work according to the corresponding duty ratio; if the current position of the clutch is determined to be in the interval between the maximum separation position and the sliding mill starting position controlled by the clutch, controlling the quick-closing electromagnetic valve to work according to a PID control strategy; if the current position of the clutch is determined to be in the clutch minimum combination position interval corresponding to the sliding mill starting position and the maximum torque transmission, controlling the slow-closing electromagnetic valve to work according to a PID control strategy; if the current position of the clutch is determined to be between the clutch minimum combination position corresponding to the maximum torque transmission and the clutch mechanical minimum combination position, simultaneously controlling the fast-closing electromagnetic valve and the slow-closing electromagnetic valve to work according to the maximum duty ratio; and if the current position of the clutch is monitored to be located at the first target position, controlling the clutch to stop combining.

Optionally, in the apparatus described above, the control module is further configured to:

Optionally, in the apparatus as described above, the corresponding clutch control strategy is a segment control strategy, and the control type is a separation control;

the control module is specifically configured to:

acquiring the current position of the clutch, a plurality of preset position intervals and a second target position; if the second target position of the clutch is determined to be between the sliding mill starting position and the maximum separation position interval controlled by the clutch, when the current position of the clutch is between the mechanical minimum combination position of the clutch and the sliding mill position range, the fast-distribution electromagnetic valve and the slow-distribution electromagnetic valve are controlled to work at the same time, and when the current position of the clutch is between the sliding mill position range and the second target position range, the slow-distribution electromagnetic valve is controlled to work according to a PID control strategy; and if the second target position of the clutch is determined to be less than or equal to the sliding mill initial position, controlling the slow-speed electromagnetic valve to work according to a PID control strategy.

In a third aspect, an embodiment of the present invention provides an electronic device, including:

a memory, a processor, and a computer program;

wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any of the first aspects.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, the computer program being executed by a processor to implement the method according to any one of the first aspect.

In a fifth aspect, embodiments of the invention provide a computer program product comprising a computer program that, when executed by a processor, implements a parallel vehicle clutch self-learning method as described in any one of the first aspects.

The embodiment of the invention provides a method, a device, equipment, a medium and a product for controlling a clutch, wherein a control request of the clutch is obtained, and the control request comprises a control type; determining the current working condition of the target vehicle according to the control request; determining a corresponding clutch control strategy according to the current working condition; and controlling the clutch to be separated or combined according to the corresponding clutch control strategy and control type. The clutch can be controlled according to the current working condition of the target vehicle and the clutch control strategy most suitable for the current working condition, so that the control requirements under different working conditions can be met, and the optimal control effect is achieved.

It should be understood that what is described in the summary above is not intended to limit key or critical features of embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a flowchart of a control method of a clutch according to an embodiment of the present invention;

FIG. 2 is a flow chart of a method of controlling a clutch according to another embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating the position of a clutch in a method for controlling the clutch according to an embodiment of the present invention;

FIG. 4 is a flowchart of a method of controlling a clutch according to yet another embodiment of the present invention;

FIG. 5 is a flow chart of a method of controlling a clutch according to yet another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a control device of a clutch according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and the embodiments of the present invention are illustrative only and are not intended to limit the scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, and in the above-described drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

For a clear understanding of the technical solutions of the present application, a detailed description of the prior art solutions is first provided.

In the prior art, when an electric control pneumatic clutch is controlled, a single PID control algorithm is generally adopted to realize a fast-slow-fast control process. However, in a parallel system vehicle, there are different operating conditions, each of which may require different clutch control. For example, in the working condition that the static motor drags the engine backwards, the clutch is required to be quickly opened and closed. No slow control is required during the skiving. And the single PID control can cause the process that the motor drags the engine backwards to be overlong, and a better control effect cannot be achieved. In the starting working condition of the engine dragged by a running vehicle in a reverse mode, the rotating speed of the motor changes in real time and is different from torque transmission control in the starting process of the engine mode, the fast-slow-fast process in the clutch control process is faster than the slow-engaging process in the starting process of the engine mode, and the single PID control method can cause overlong intervention time of the engine and increase the abrasion of the clutch.

Therefore, in order to solve the technical problems in the prior art, the inventor discovers through creative research that a control strategy meeting the clutch control requirement of a working condition is configured in advance for each working condition of a target vehicle due to different control requirements of the clutch under different working conditions. And then monitoring whether the control request of the clutch is obtained or not in the running process of the target vehicle, if the control request of the clutch is determined to be obtained, determining the current working condition of the target vehicle according to the control request, then determining a corresponding clutch control strategy according to the current working condition, and controlling the clutch according to the corresponding clutch control strategy and the control type in the control request. And when the control type is control separation, controlling the clutch to separate according to the corresponding clutch control strategy, and when the control type is control combination, controlling the clutch to combine according to the corresponding clutch control strategy. The clutch can be controlled according to the current working condition of the target vehicle and the clutch control strategy most suitable for the current working condition, so that the control requirements under different working conditions can be met, and the optimal control effect is achieved.

The following describes the technical solution of the present invention and how to solve the above technical problems in detail by using specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.

Example one

Fig. 1 is a flowchart of a method for controlling a clutch according to an embodiment of the present invention, and as shown in fig. 1, an execution main body of the method for controlling a clutch according to the embodiment is a control device of a clutch, the control device of the clutch may be integrated into an automatic Transmission Controller (TCU), and the automatic transmission controller is integrated into an electronic device, so that the method for controlling a clutch according to the embodiment includes the following steps.

Step 101, a control request of a clutch is obtained, wherein the control request comprises a control type.

In this embodiment, the vehicle control unit monitors the operation condition of the target vehicle in real time, determines whether the control condition of the clutch is satisfied according to the operation condition of the target vehicle, and sends a control request of the clutch to the TCU if the control condition of the clutch is determined to be satisfied, and the TCU obtains the control request.

Or in this embodiment, the rotation speed conditions of the transmission case and the transmitter are monitored, whether the control condition of the clutch is met is judged according to the rotation speed conditions of the transmission case and the engine, and if the control condition of the clutch is determined to be met, the control request of the clutch is generated.

Wherein the control type is included in the control request. The control type may be a combination control or a separate control.

In this embodiment, the target vehicle may be a parallel system vehicle that controls a clutch. The gearbox can be an automatic gearbox (AMT for short). The clutch may be an electrically controlled pneumatic clutch.

And 102, determining the current working condition of the target vehicle according to the control request.

In this embodiment, according to the control request, the current rotation speed conditions of the transmission and the engine may be monitored, and the current operating condition of the target vehicle may be determined according to the current rotation speed conditions of the transmission and the engine. Or determine the current operating condition of the target vehicle in other manners, which is not limited in this embodiment.

The current working condition of the target vehicle can be a static motor dragging-backward engine working condition, an engine mode or a static gear-shifting speed-regulating starting working condition, a driving dragging-backward engine starting working condition, an engine speed-regulating intervention working condition and the like.

And 103, determining a corresponding clutch control strategy according to the current working condition.

In this embodiment, a corresponding clutch control strategy may be configured in advance according to the control requirement for the clutch under each working condition of the target vehicle, and the working condition identification information and the clutch control strategy may be stored in association. And acquiring a clutch control strategy having an association relation with the current working condition as a corresponding clutch control strategy after the current working condition is determined.

And 104, controlling the clutch to be separated or combined according to the corresponding clutch control strategy and control type.

In this embodiment, if the control type is the engagement control, the engagement of the clutch is controlled according to the corresponding clutch control strategy. And if the control type is the separation control, controlling the separation of the clutch according to a corresponding clutch control strategy.

When the clutch is controlled to be combined or separated, the electrically controlled pneumatic actuating mechanism is adopted to control the piston rod in the cylinder to act, and finally the purpose of controlling the separation and the combination of the electrically controlled pneumatic clutch is achieved.

Wherein, four solenoid valves are generally adopted by the electric control pneumatic actuating mechanism. Two air inlet valves and air release valves with larger apertures and two air inlet valves and air release valves with smaller apertures. The air inlet valve with the larger aperture is a quick-acting solenoid valve, the air inlet valve with the smaller aperture is a slow-acting solenoid valve, the air release valve with the larger aperture is a quick-acting solenoid valve, and the air release valve with the smaller aperture is a slow-acting solenoid valve. In this exemplary embodiment, therefore, a control strategy for the at least one solenoid valve is provided in the clutch control strategy.

It will be appreciated that the different types of control result in different specific control details for the corresponding clutch control strategy.

In the control method of the clutch provided by the embodiment, a control request of the clutch is acquired, and the control request includes a control type; determining the current working condition of the target vehicle according to the control request; determining a corresponding clutch control strategy according to the current working condition; and controlling the clutch to be separated or combined according to the corresponding clutch control strategy and control type. The clutch can be controlled according to the current working condition of the target vehicle and the clutch control strategy most suitable for the current working condition, so that the control requirements under different working conditions can be met, and the optimal control effect is achieved.

Example two

Fig. 2 is a flowchart of a clutch control method according to another embodiment of the present invention, and as shown in fig. 2, the clutch control method according to this embodiment is further detailed in steps 102 to 103 on the basis of the clutch control method according to the first embodiment of the present invention, and the clutch control method according to this embodiment includes the following steps.

Step 201, a control request of the clutch is obtained, wherein the control request comprises a control type.

In this embodiment, the implementation manner of step 201 is similar to that of step 101 in the first embodiment of the present invention, and is not described in detail here.

And step 202, acquiring the current rotating speed condition of an input shaft of a gearbox and the current rotating speed condition of an engine of the target vehicle according to the control request.

In this embodiment, the current input shaft speed condition of the transmission of the target vehicle may be obtained from the transmission controller, and the current speed condition of the engine may be obtained from the engine controller.

The current input shaft rotating speed condition of the gearbox can be that the current input shaft of the gearbox has no rotating speed or the current input shaft of the gearbox has the rotating speed. The current rotating speed condition of the engine can be that the engine has the current rotating speed or the engine does not have the current rotating speed.

And step 203, determining the current working condition of the target vehicle according to the current rotating speed condition of the input shaft of the gearbox and the current rotating speed condition of the engine.

Wherein, the current operating mode is any one of the following operating modes:

Specifically, in this embodiment, if the current input shaft of the transmission has no rotation speed and the engine has no rotation speed, it is determined that the current working condition of the target vehicle is the working condition of the stationary motor dragging engine. And if the current input shaft of the gearbox has no rotating speed and the engine has the rotating speed, determining the current working condition of the target vehicle as an engine mode or a static gear-shifting speed-regulating starting working condition. And if the current input shaft of the gearbox has the rotating speed and the engine does not have the rotating speed, determining the current working condition of the target vehicle as a running and dragging engine starting working condition. And if the current input shaft of the gearbox has the rotating speed and the current engine has the rotating speed, determining the current working condition of the target vehicle as an engine speed regulation intervention working condition.

And step 204, determining a corresponding clutch control strategy according to the current working condition.

And step 205, controlling the clutch to be separated or combined according to the corresponding clutch control strategy and control type.

Alternatively, if the current operating condition is a static motor reverse engine operating condition, step 204 includes:

and determining the corresponding clutch control strategy as a double-valve maximum duty ratio control strategy according to the working condition of the static motor dragging engine.

Specifically, in this embodiment, if it is determined that the current working condition is the working condition of the stationary motor reverse-driving engine, the clutch control strategy under the working condition of the stationary motor reverse-driving engine is a two-valve maximum duty ratio control strategy, and when the clutch is controlled to be combined, the fast-closing electromagnetic valve and the slow-closing electromagnetic valve are controlled to work according to the maximum duty ratio until the combined target position of the clutch is reached. The combined target position is the first target position. When the clutch is controlled to be separated, the fast-speed distributing electromagnetic valve and the slow-speed distributing electromagnetic valve are controlled to work according to the maximum duty ratio until the separated target position of the clutch is reached, wherein the separated target position is a second target position, and the second target position is equal to the mechanical maximum separation position of the clutch.

In this embodiment, when the current operating condition is determined to be the operating condition of the stationary motor reverse-dragging engine, the target position of the clutch can be determined according to the control type.

Optionally, if the current operating condition is an engine mode or a static gearshift starting operating condition, step 204 includes:

determining the current position of the clutch and a plurality of preset position intervals according to an engine mode or a static gear-shifting speed-regulating starting condition, if the current position of the clutch is determined to be in a clutch minimum combination position interval corresponding to the sliding friction starting position and the maximum torque transmission, determining the corresponding clutch control strategy to be a PID control strategy, and if the current position of the clutch is determined to be in other position intervals, determining the corresponding clutch control strategy to be a segmented control strategy.

Specifically, as shown in FIG. 3, the clutch has a current position and a target position. The target position of the clutch may be different for different operating conditions and control types. And the current position is a constantly changing process depending on the engagement and disengagement of the clutch. In controlling the engagement or disengagement of the clutch, the position of the clutch may be divided into a plurality of position intervals in advance. Respectively as follows: [ pos _ clth _ opn, pos _ clth _ opn _ pre ], [ pos _ clth _ opn _ pre, pos _ clth _ slp _ min ], [ pos _ clth _ slp _ min, pos _ clth _ trqmax ], [ pos _ clth _ trqmax, pos _ clth _ cls ].

Where pos _ clth _ opn is a clutch mechanical maximum disengagement position, pos _ clth _ opn _ pre is a clutch control maximum disengagement position, pos _ clth _ slp _ min is a slip start position, pos _ clth _ trqmax is a clutch minimum engagement position corresponding to maximum torque transfer, and pos _ clth _ cls is a clutch mechanical minimum engagement position. In fig. 3, further includes: offset _ cls is a control error threshold of the switching slow closed valve during combined control, offset _ opn is a control error threshold of the switching slow closed valve during separated control, Δ pos _ cls is a maximum overshoot allowed during combined control, and Δ pos _ opn is a maximum overshoot allowed during separated control.

Therefore, in this embodiment, the current position of the clutch is determined, the relationship between the current position of the clutch and a plurality of preset position intervals is determined, if the current position of the clutch is determined to be in a clutch minimum combination position interval corresponding to the slip starting position and the maximum torque transmission, namely [ pos _ clth _ slp _ min, pos _ clth _ trqmax ], the corresponding clutch control strategy is determined to be a PID control strategy, and if the control type is determined to be the separation control, the slow-distribution solenoid valve is controlled to work according to the PID parameters calibrated in advance. And if the control type is determined to be combined control, controlling the slow-closing electromagnetic valve to work according to the pre-calibrated PID control parameters. If the current position of the clutch is determined to be in any one of [ pos _ clth _ opn, pos _ clth _ opn _ pre ], [ pos _ clth _ opn _ pre, pos _ clth _ slp _ min ], [ pos _ clth _ trqmax, pos _ clth _ cls ], the corresponding clutch control strategy is determined to be a segmented control strategy. And if the control type is combined control, the control strategy is a combined segmented control strategy. And if the control type is separation control, the control strategy is a separation subsection control strategy.

Alternatively, if it is determined that the current operating condition is a driving reverse engine starting operating condition or an engine speed regulation intervening operating condition, step 204 includes:

and determining the corresponding clutch control strategy as a segmented control strategy according to the starting working condition of the driving and dragging engine or the speed regulating intervention working condition of the engine.

In this embodiment, when the current working condition is a driving-dragging-backward engine starting working condition or an engine speed regulation intervention working condition, the corresponding clutch control strategy is determined to be a segmented control strategy. If the control type is combined control, the corresponding clutch control strategy is a combined segmented control strategy. And controlling the clutch to be combined according to a combined segmented control strategy. And if the control type is separation control, the corresponding clutch control strategy is a separation subsection control strategy. And controlling the clutch to be separated according to a separation subsection control strategy.

According to the control method of the clutch provided by the embodiment, when the current working condition of the target vehicle is determined according to the control request, the current rotating speed condition of the input shaft of the gearbox and the current rotating speed condition of the engine of the target vehicle are obtained according to the control request; the current working condition of the target vehicle is determined according to the current rotating speed condition of the input shaft of the gearbox and the current rotating speed condition of the engine, and the current working condition of the target vehicle can be accurately determined according to the current rotating speed conditions of the gearbox and the engine.

The method for controlling a clutch according to this embodiment determines, according to a working condition of a stationary motor towing engine, that a corresponding clutch control strategy is a two-valve maximum duty ratio control strategy, or determines, according to an engine mode or a stationary shift and speed-regulation starting condition, a current position of the clutch and a plurality of preset position intervals, if it is determined that the current position of the clutch is in a clutch minimum combination position interval corresponding to a slip starting position and a maximum torque transfer, the corresponding clutch control strategy is determined as a PID control strategy, if it is determined that the current position of the clutch is in other position intervals, the corresponding clutch control strategy is determined as a segment control strategy, or determines the corresponding clutch control strategy as a segment control strategy according to a starting condition of a driving towing engine or an engine speed-regulation intervening condition, and controls the clutch by the clutch control strategy most suitable for the current working condition no matter which working condition the current working condition is, the control requirements under different working conditions can be met, and the optimal control effect is achieved.

EXAMPLE III

Fig. 4 is a flowchart of a clutch control method according to still another embodiment of the present invention, and as shown in fig. 4, in the clutch control method according to this embodiment, on the basis of the first embodiment or the second embodiment of the present invention, the corresponding clutch control strategy is a segmented control strategy, and when the control type is combined control, the step 104 is further refined, so that the clutch control method according to this embodiment includes the following steps:

step 301, obtaining a current position of the clutch, a plurality of preset position intervals and a first target position.

The current position of the clutch can be acquired through the vehicle control unit. After the current working condition of the target vehicle is determined, a first target position corresponding to the current working condition can be determined. The first target position is a corresponding target position when the clutch is combined.

In this embodiment, the preset position intervals are [ pos _ clth _ opn, pos _ clth _ opn _ pre ], [ pos _ clth _ opn _ pre, pos _ clth _ slp _ min ], [ pos _ clth _ slp _ min, pos _ clth _ trqmax ], [ pos _ clth _ trqmax, and pos _ clth _ cls ], respectively. The meaning of each position is shown as step 204 in the second embodiment, and is not described herein.

And step 302, if the current position of the clutch is determined to be between the mechanical maximum separation position of the clutch and the maximum separation position controlled by the clutch, controlling the fast-closing electromagnetic valve and the slow-closing electromagnetic valve to work according to the corresponding duty ratio.

In this embodiment, after the current position is obtained, the current position is compared with a plurality of preset position intervals, if the current position is determined to be [ pos _ clth _ opn, pos _ clth _ opn _ pre ], the fast-closing solenoid valve is controlled to operate according to the maximum duty ratio until the clutch starts to operate, after waiting for a preset time, the fast-closing solenoid valve is controlled to operate according to the 50% duty ratio to the position of pos _ clth _ opn-offset _ cls, and after waiting for the preset time, the slow-closing solenoid valve is controlled to operate according to the 20% duty ratio to the maximum separation position controlled by the clutch.

And pos _ clth _ opn-offset _ cls is a difference position between the mechanical maximum separation position of the clutch and a control error threshold value of the switching slow-closing valve during the combined control.

Wherein, the preset time may be 60 ms. Because the pneumatic clutch has a delayed response characteristic, a preset time is waited after each control of the electromagnetic valve.

And step 303, if the current position of the clutch is determined to be between the maximum separation position and the sliding mill starting position controlled by the clutch, controlling the quick-closing electromagnetic valve to work according to a PID control strategy.

In the embodiment, the clutch continues to move, and if the current movement of the clutch is determined to be [ pos _ clth _ opn _ pre, pos _ clth _ slp _ min ], the slow-closing electromagnetic valve is controlled to work according to a pre-calibrated PID parameter until the fast-closing electromagnetic valve works to the position of the starting position of the sliding mill.

And 304, if the current position of the clutch is determined to be in the clutch minimum combination position interval corresponding to the sliding mill starting position and the maximum torque transmission, controlling the slow-closing electromagnetic valve to work according to a PID control strategy.

In the embodiment, the clutch continues to move, and if the current clutch is determined to move to [ pos _ clth _ slp _ min, pos _ clth _ trqmax ], the slow-closing electromagnetic valve is controlled to work according to the pre-calibrated PID parameters until the quick-opening electromagnetic valve works to the clutch minimum combination position corresponding to the maximum torque transmission.

It should be noted that, if the current operating condition is an engine mode or a static shift and speed regulation starting condition, when the current position of the clutch is [ pos _ clth _ slp _ min, pos _ clth _ trqmax ], the slow-closing solenoid valve is controlled to work according to preset PID parameters until the slow-closing solenoid valve works to a clutch minimum combination position corresponding to the maximum torque transmission.

And 305, if the current position of the clutch is determined to be in the interval between the clutch minimum combination position corresponding to the maximum torque transmission and the clutch mechanical minimum combination position, simultaneously controlling the fast-closing solenoid valve and the slow-closing solenoid valve to work according to the maximum duty ratio.

In this embodiment, the clutch continues to move, if it is determined that the clutch is currently moving

[ pos _ clth _ trqmax, pos _ clth _ cls ], the fast-closing solenoid valve and the slow-closing solenoid valve are simultaneously controlled to work according to the maximum duty ratio.

And step 306, if the current position of the clutch is monitored to be located at the first target position, controlling the clutch to stop combining.

In this embodiment, after the clutch is currently moved to [ pos _ clth _ trqmax, pos _ clth _ cls ], in the process of controlling the fast-closing solenoid valve and the slow-closing solenoid valve to work according to the maximum duty ratio, the current position of the clutch is monitored in real time, whether the current position of the clutch is located at the first target position is judged, if the current position of the clutch is determined to be located at the first target position, it is indicated that the clutch is completely combined, and the combined target position is reached, the clutch is controlled to stop combining.

And 307, if the current position of the clutch is determined to be outside the clutch combination overshoot interval, controlling the slow-speed power distribution electromagnetic valve to work to a first target position according to the minimum duty ratio.

In this embodiment, since the clutch has a certain time delay property during the engagement process and when the control manifold stops engaging, the current position of the clutch may be outside the clutch engagement overshoot interval, wherein if it is determined that the clutch engagement overshoot interval is greater than the allowable range Δ pos _ cls, it is determined that the current position is outside the clutch engagement overshoot interval, and after waiting for a preset time, the slow-distribution solenoid valve is controlled to operate to the first target position according to the minimum duty ratio.

According to the control method of the clutch provided by the embodiment, when the clutch is controlled to be combined according to the segmented control strategy, the current position of the clutch, a plurality of preset position intervals and a first target position are obtained; if the current position of the clutch is determined to be between the mechanical maximum separation position of the clutch and the maximum separation position controlled by the clutch, controlling the fast-closing electromagnetic valve and the slow-closing electromagnetic valve to work according to the corresponding duty ratio; if the current position of the clutch is determined to be in the interval between the maximum separation position and the sliding mill starting position controlled by the clutch, controlling the quick-closing electromagnetic valve to work according to a PID control strategy; if the current position of the clutch is determined to be in the clutch minimum combination position interval corresponding to the sliding mill starting position and the maximum torque transmission, controlling the slow-closing electromagnetic valve to work according to a PID control strategy; if the current position of the clutch is determined to be between the clutch minimum combination position corresponding to the maximum torque transmission and the clutch mechanical minimum combination position, simultaneously controlling the fast-closing electromagnetic valve and the slow-closing electromagnetic valve to work according to the maximum duty ratio; and if the current position of the clutch is monitored to be located at the first target position, controlling the clutch to stop combining. The method can perform segmented control according to the actual position of the clutch, and takes the time delay response characteristic of the pneumatic clutch into consideration, and achieves the effect of stable control of the quick-closing and the sliding friction area through the coordinated control of the electromagnetic valves in each segment.

According to the control method of the clutch provided by the embodiment, if the current position of the clutch is determined to be outside the clutch connection overshoot interval, the slow-speed electromagnetic valve is controlled to work to the first target position according to the minimum duty ratio, and the current position of the clutch can be accurately adjusted to the target position when the current position of the clutch is outside the clutch connection overshoot interval.

Example four

Fig. 5 is a flowchart of a clutch control method according to yet another embodiment of the present invention, and as shown in fig. 5, in the clutch control method according to this embodiment, on the basis of the first embodiment or the second embodiment of the present invention, the corresponding clutch control strategy is a segmented control strategy, and when the control type is the disengagement control, the step 104 is further refined, so that the clutch control method according to this embodiment includes the following steps:

step 401, acquiring a current position of the clutch, a plurality of preset position intervals and a second target position.

The current position of the clutch can be acquired through the vehicle control unit. After the current operating condition of the target vehicle is determined, a second target position corresponding to the current operating condition may be determined. The second target position is a corresponding target position when the clutch is disengaged. And if the current working condition is any one of an engine mode or a static gear-shifting speed-regulating starting working condition, a driving dragging-backward engine starting working condition and an engine speed-regulating intervention working condition, the second target position is determined according to the specific target vehicle running condition of each working condition.

It should be noted that, if the current working condition is a static motor reverse-dragging engine working condition, the corresponding separation control strategy is a double-valve maximum duty ratio control strategy, that is, the fast-distribution electromagnetic valve and the slow-distribution electromagnetic valve are controlled to simultaneously work according to a counter-beating duty ratio.

Step 402, if it is determined that the second target position of the clutch is between the sliding friction initial position and the maximum separation position of the clutch control, when the current position of the clutch is between the mechanical minimum combination position of the clutch and the sliding friction position range, the fast-distribution electromagnetic valve and the slow-distribution electromagnetic valve are controlled to work at the same time, and when the current position of the clutch is between the sliding friction position range and the second target position range, the slow-distribution electromagnetic valve is controlled to work according to a PID control strategy.

In the embodiment, since the target position of the clutch is closely related to the segment control strategy when the clutch is controlled to be disengaged, the second target position of the clutch in the current operating condition is determined, if the second target position of the clutch is determined to be [ pos _ clth _ slp _ min, pos _ clth _ opn _ pre ], the current position of the clutch is determined, and if the current position of the clutch is determined to be [ pos _ clth, pos _ clth _ slp _ min-offset _ opn ], the fast-component solenoid valve and the slow-component solenoid valve are controlled to be operated simultaneously. The pos _ clth _ slp _ min-offset _ opn is a sliding position range and is a difference value between an initial sliding position and a control error threshold value of the slow branch valve during separation control.

It can be understood that, when the fast distributing electromagnetic valve and the slow distributing electromagnetic valve are controlled to work at the same time, the duty ratio of the fast distributing electromagnetic valve and the slow distributing electromagnetic valve is not limited.

In the embodiment, if the current position of the clutch is [ pos _ clth _ slp _ min-offset _ opn, pos _ clth _ des ], the slow-speed electromagnetic valve is controlled to work according to a pre-calibrated PID parameter.

Wherein pos _ clth _ des is the second target position.

It should be noted that, if the current position of the clutch is located in other unspecified intervals, the electromagnetic valve continues to be controlled to operate according to the control mode of the previous adjacent interval.

And step 403, if the second target position of the clutch is determined to be less than or equal to the sliding mill initial position, controlling the slow-distributing electromagnetic valve to work according to a PID control strategy.

In this embodiment, if it is determined that the second target position of the clutch in the current operating condition is less than or equal to pos _ clth _ slp _ min, the slow-distribution solenoid valve is controlled to operate according to a pre-calibrated PID parameter.

In steps 402-403, the current working condition is any one of an engine mode or a static gear-shifting speed-regulating starting working condition, a driving and dragging-backward engine starting working condition, and an engine speed-regulating intervening working condition.

According to the control method of the clutch provided by the embodiment, when the clutch is controlled to be separated according to a segmented control strategy, the current position of the clutch, a plurality of preset position intervals and a second target position are obtained; if the second target position of the clutch is determined to be in the interval between the sliding friction initial position and the maximum separation position controlled by the clutch, when the current position of the clutch is in the interval between the mechanical minimum combination position of the clutch and the sliding friction position range, the fast-distribution electromagnetic valve and the slow-distribution electromagnetic valve are controlled to work simultaneously, and when the current position of the clutch is in the interval between the sliding friction position range and the second target position, the slow-distribution electromagnetic valve is controlled to work according to a PID control strategy; and if the second target position of the clutch is determined to be less than or equal to the sliding mill initial position, controlling the slow-speed electromagnetic valve to work according to a PID control strategy. The clutch can be controlled in a segmented mode according to the target position of clutch separation, the delay response characteristic of the pneumatic clutch is considered, and the effect of stable control of a fast separation area and a sliding friction area is achieved through coordinated control of the electromagnetic valves in each segment.

EXAMPLE five

Fig. 6 is a schematic structural diagram of a control device for a clutch according to an embodiment of the present invention, and as shown in fig. 6, the control device 50 for a clutch according to the embodiment includes: the system comprises a request acquisition module 51, a working condition determination module 52, a strategy determination module 53 and a control module 54.

The request obtaining module 51 is configured to obtain a control request of the clutch, where the control request includes a control type. And the working condition determining module 52 is used for determining the current working condition of the target vehicle according to the control request. And the strategy determining module 53 is used for determining a corresponding clutch control strategy according to the current working condition. A control module 54 controls clutch disengagement or engagement according to a corresponding clutch control strategy and control type.

The control device of the clutch provided in this embodiment may execute the technical solution of the method embodiment shown in fig. 1, and the implementation principle and technical effect are similar, which are not described herein again.

Optionally, the operating condition determining module 52 is specifically configured to:

Optionally, the current operating condition is any one of the following operating conditions:

Optionally, if the current operating condition is a static motor reverse-dragging engine operating condition, the strategy determining module 53 is specifically configured to:

determining a corresponding clutch control strategy as a double-valve maximum duty ratio control strategy according to the working condition of the static motor dragging engine;

or, if the current working condition is an engine mode or a static gear-shifting speed-regulating starting working condition, the strategy determining module 53 is specifically configured to:

determining the current position of the clutch and a plurality of preset position intervals according to an engine mode or a static gear-shifting speed-regulating starting condition, if the current position of the clutch is determined to be in a minimum combination position interval of the clutch corresponding to the sliding friction starting position and the maximum torque transmission, determining the corresponding clutch control strategy to be a PID control strategy, and if the current position of the clutch is determined to be in other position intervals, determining the corresponding clutch control strategy to be a segmented control strategy;

or, if it is determined that the current working condition is a driving reverse dragging engine starting working condition or an engine speed regulating intervention working condition, the strategy determining module 53 is specifically configured to:

Optionally, the corresponding clutch control strategy is a segmented control strategy, and the control type is combined control;

the control module 54 is specifically configured to: acquiring the current position of a clutch, a plurality of preset position intervals and a first target position; if the current position of the clutch is determined to be between the mechanical maximum separation position of the clutch and the maximum separation position controlled by the clutch, controlling the fast-closing electromagnetic valve and the slow-closing electromagnetic valve to work according to the corresponding duty ratio; if the current position of the clutch is determined to be in the interval between the maximum separation position and the sliding mill starting position controlled by the clutch, controlling the quick-closing electromagnetic valve to work according to a PID control strategy; if the current position of the clutch is determined to be in the clutch minimum combination position interval corresponding to the sliding mill starting position and the maximum torque transmission, controlling the slow-closing electromagnetic valve to work according to a PID control strategy; if the current position of the clutch is determined to be between the clutch minimum combination position corresponding to the maximum torque transmission and the clutch mechanical minimum combination position, simultaneously controlling the fast-closing electromagnetic valve and the slow-closing electromagnetic valve to work according to the maximum duty ratio; and if the current position of the clutch is monitored to be located at the first target position, controlling the clutch to stop combining.

Optionally, the control module 54 is further configured to:

Optionally, the corresponding clutch control strategy is a segmented control strategy, and the control type is separation control;

the control module 54 is specifically configured to:

The control device of the clutch provided in this embodiment may execute the technical solutions of the method embodiments shown in fig. 2, fig. 4 to fig. 5, and the implementation principles and technical effects are similar, and are not described herein again.

EXAMPLE six

Fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 7, an electronic device 60 according to an embodiment of the present invention includes: memory 61, processor 62 and computer programs.

Wherein the computer program is stored in the memory 61 and configured to be executed by the processor 62 to implement the control method of the clutch of any one of the first to fourth embodiments. The relevant description may be understood by referring to the relevant description and effect corresponding to the steps in fig. 1-2 and fig. 4-5, and will not be described in detail herein.

In the present embodiment, the memory 61 and the processor 62 are connected by a bus.

The embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored, where the computer program is executed by a processor to implement the method for controlling a clutch according to any one of the first to fourth embodiments.

An embodiment of the present invention further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the method for controlling a clutch according to any one of the first to fourth embodiments is implemented.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules is merely a division of logical functions, and an actual implementation may have another division, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, functional modules in the embodiments of the present invention may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a mode of hardware and a software functional module.

Program code for implementing the methods of the present invention may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowchart and/or block diagram to be performed. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of the present invention, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

Further, while operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A method of controlling a clutch, comprising:

controlling the clutch to be separated or combined according to the corresponding clutch control strategy and control type;

the current working condition is any one of the following working conditions:

the method comprises the following steps that (1) the working condition of a static motor dragging engine, the working condition of an engine mode or a static gear-shifting speed-regulating starting working condition, the working condition of a driving dragging engine and the working condition of engine speed regulation intervention are adopted;

if the current working condition is a static motor reverse-dragging engine working condition, determining a corresponding clutch control strategy according to the current working condition, wherein the clutch control strategy comprises the following steps:

2. The method of claim 1, wherein determining a current operating condition of a target vehicle based on the control request comprises:

3. The method of claim 1, wherein the corresponding clutch control strategy is a segment control strategy and the control type is a combination control;

4. The method of claim 3, further comprising:

and if the current position of the clutch is determined to be outside the clutch combination overshoot interval, controlling the slow-speed distribution electromagnetic valve to work to a first target position according to the minimum duty ratio.

5. The method of claim 1, wherein the corresponding clutch control strategy is a split control strategy and the control type is a split control;

6. A control device of a clutch, characterized by comprising:

the strategy determination module is used for determining a corresponding clutch control strategy according to the current working condition;

the control module is used for controlling the clutch to be separated or combined according to the corresponding clutch control strategy and control type;

the current working condition is any one of the following working conditions:

if the current working condition is a static motor engine-dragging-backward working condition, the strategy determination module is specifically used for:

or, if it is determined that the current working condition is a driving reverse dragging engine starting working condition or an engine speed regulation intervention working condition, the strategy determining module is specifically configured to:

7. An electronic device, comprising:

a memory, a processor, and a computer program;

wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of claims 1-5.

8. A computer-readable storage medium, having stored thereon a computer program for execution by a processor to perform the method of any one of claims 1-5.

9. A computer program product comprising a computer program, characterized in that the computer program realizes the method according to any of claims 1-5 when executed by a processor.