CN113417951A - Control method and control device for clutch separation and readable storage medium - Google Patents
Control method and control device for clutch separation and readable storage medium Download PDFInfo
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- CN113417951A CN113417951A CN202110672530.0A CN202110672530A CN113417951A CN 113417951 A CN113417951 A CN 113417951A CN 202110672530 A CN202110672530 A CN 202110672530A CN 113417951 A CN113417951 A CN 113417951A
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- 238000000926 separation method Methods 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000004590 computer program Methods 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 25
- 230000007246 mechanism Effects 0.000 abstract description 16
- 230000004044 response Effects 0.000 abstract description 7
- 238000011217 control strategy Methods 0.000 abstract description 5
- 230000006870 function Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000004043 responsiveness Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/102—Actuator
- F16D2500/1028—Pneumatic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/11—Application
- F16D2500/1107—Vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/304—Signal inputs from the clutch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/304—Signal inputs from the clutch
- F16D2500/30401—On-off signal indicating the engage or disengaged position of the clutch
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention discloses a control method, a control device and a readable storage medium for clutch separation, which extend the separation stroke of a clutch for a certain distance after the clutch reaches the complete separation state in the clutch separation control process, and then retreat the clutch to the complete separation position range, so that the subsequent control strategy can be executed in time after the clutch reaches the complete separation state, and the process of reducing the acting force of a clutch execution mechanism is completed when the clutch retreats to the complete separation position range, therefore, the response of a clutch engagement instruction can be greatly improved in the clutch engagement control process.
Description
Technical Field
The invention relates to the technical field of clutch systems, in particular to a clutch separation control method, control equipment and a readable storage medium.
Background
In a vehicle power assembly having an automatic clutch system, a clutch actuator and an operating mechanism thereof have a plurality of various types of kinematic pairs, and the kinematic pairs not only serve to transmit or change a clutch release driving force, but also hinder the efficient progress of the release motion due to relative motion friction between the kinematic pairs. The example shown in fig. 1 has 9 kinematic pairs, and the frictional force generated by the kinematic pairs cannot be ignored, and the influence thereof on the response of the clutch engagement command cannot be ignored. Therefore, it is necessary to avoid the influence of this part of the frictional force during the control of the automatic clutch system.
Referring to fig. 1, the clutch driven plate 05 is pressed between the flywheel 06 and the pressure plate 02 by the elastic force generated by the deformation of the diaphragm spring 04. The pressure plate 02 is connected with a pressure plate cover 03 through an elastic steel sheet which can transmit axial force and can deform, and the pressure plate cover 03 is fixedly connected with the flywheel 06. When the clutch is disengaged, the force output by the actuating mechanism 01 overcomes the deformation force of the diaphragm spring 04 through the operating mechanism to enable the diaphragm spring 04 to continue to deform, and the pressure plate 02 is separated under the action of the spring steel sheet. The diaphragm spring may be replaced with a coil spring. The diaphragm spring is different from the coil spring mainly in the relationship between the elastic force and the deformation, and reference may be made to related technical data.
In the prior art, in the clutch release control process, when a system detects that a displacement sensor signal of a clutch actuating mechanism reaches a complete release position band, an air inlet valve is closed, a release stroke is finished, and the current state of a clutch is set to be a complete release state. When the clutch actuator performs the engaging action, the controller controls the air release valve to open and release air, so that the acting force of the clutch actuator is continuously reduced, the engaging stroke of the clutch can be really started only after the acting force is reduced to the difference value between the elastic force of the diaphragm spring and the static friction force of the kinematic pair, and the time consumed in the process of reducing the acting force is an important component of the response delay time in the process of controlling the engagement of the clutch. It can be seen that the existing clutch control process affects clutch engagement command responsiveness.
Therefore, how to improve the responsiveness of the clutch engagement command is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a clutch disengagement control method, a control apparatus, and a readable storage medium for improving the responsiveness of a clutch engagement command.
In order to achieve the purpose, the invention provides the following technical scheme:
a method of controlling clutch disengagement, comprising the steps of:
outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step;
judging whether the current position of the clutch is larger than or equal to the minimum value of the complete separation position range, if so, continuously outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step; if not, returning to the previous step;
judging whether the current position of the clutch is greater than or equal to a preset separation position, if so, stopping outputting a clutch separation instruction, and entering the next step; if not, continuing to output a clutch separation instruction and acquiring the current position of the clutch, and repeating the step; wherein the preset separation position is larger than the maximum value of the complete separation position range;
outputting a clutch engagement instruction, acquiring the current position of the clutch, and entering the next step;
judging whether the current position of the clutch is in the range of the completely separated position, if so, stopping outputting a clutch engaging instruction; if the current clutch position is greater than the maximum of the fully disengaged position range, the previous step is returned to.
Preferably, the step of determining whether the current clutch position is within the fully disengaged position range includes:
judging whether the current position of the clutch is less than or equal to the maximum value of the complete separation position range, if so, entering the next step; if not, returning to the step of outputting the clutch engagement instruction and acquiring the current position of the clutch;
judging whether the current position of the clutch is larger than or equal to the minimum value of the complete separation position range or not, and if so, stopping outputting a clutch engagement instruction; if not, stopping outputting the clutch engaging command, outputting the clutch disengaging command, acquiring the current position of the clutch, and returning to the step of judging whether the current position of the clutch is more than or equal to the preset disengaging position.
Preferably, before the step of outputting the clutch release command and acquiring the current clutch position, the method further comprises the following steps:
after the whole vehicle is electrified, outputting a clutch engagement instruction, acquiring the current position of a clutch, and entering the next step;
judging whether the current position of the clutch changes, if so, returning to the previous step; if not, taking the current position of the clutch as a full engagement position, and entering the next step;
the sum of the fully engaged position and the calibrated disengagement stroke is taken as a fully disengaged position, the sum of the fully disengaged position and the preset calibrated stroke is taken as a preset disengaged position, and the sum of the fully disengaged position and the compensated calibrated stroke range is taken as a fully disengaged position range.
Preferably, in the step of determining whether the current position of the clutch is greater than or equal to the minimum value of the range of the completely disengaged position, if so, taking the current state of the clutch as the completely disengaged state, continuously outputting a clutch disengagement command and acquiring the current position of the clutch, and entering the next step; if not, returning to the previous step.
Preferably, the output clutch release command comprises an output command for controlling the clutch inlet valve to open, and the output clutch engagement command comprises an output command for controlling the clutch release valve to open.
Preferably, the acquiring of the current clutch position includes acquiring position information detected by a clutch position sensor.
The invention also provides a control device for clutch separation, which comprises a memory and a processor;
the memory is used for storing programs;
the processor is configured to execute the program and implement the steps of the clutch disengagement control method described above.
Preferably, the above-described control apparatus for clutch disengagement further includes a clutch actuator for driving the clutch to disengage and engage.
Preferably, the clutch actuator includes a clutch inlet valve and a clutch outlet valve and an actuator cylinder.
Preferably, the above clutch disengagement control apparatus further includes a clutch position sensor for detecting a clutch position.
The invention also provides a readable storage medium on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for controlling clutch disengagement as described above.
According to the technical scheme, in the clutch separation control process, after the clutch reaches the complete separation state, the separation stroke of the clutch is prolonged for a certain distance, and then the clutch is retracted to the complete separation position range, so that a subsequent control strategy can be executed in time after the clutch reaches the complete separation state, and the process of reducing the acting force of the clutch executing mechanism is completed when the clutch is retracted to the complete separation position range, therefore, the response of a clutch engagement command can be greatly improved in the clutch engagement control process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a clutch and an actuator;
FIG. 2 is a control flow chart of a vehicle self-checking process after the entire vehicle is powered on in the embodiment of the present invention;
FIG. 3 is a first control flow chart of a method of controlling clutch disengagement in an exemplary embodiment of the present invention;
fig. 4 is a second control flowchart of a clutch disengagement control method according to an embodiment of the present invention.
The reference numerals in fig. 1 have the meaning:
01-actuator, 02-pressure plate, 03-pressure plate cover, 04-diaphragm spring, 05-driven plate and 06-flywheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the structure of the clutch and the actuator shown in fig. 1, the frictional force between the respective kinematic pairs and the separating force are in a positive relationship, and the larger the separating force is, the larger the frictional force is. During clutch disengagement, the (dynamic) friction force gradually increases. At the end of the separating stroke, the force (noted FP) of the compressed air pressure acting on the piston in the actuating mechanism is equal to the sum of the force (noted FL) converted to the actuating mechanism piston by the elastic force caused by the elastic deformation of the spring and the force (noted FS) converted to the actuating mechanism piston by each (static) friction force; at the start of clutch engagement, the end of the disengagement stroke is the start of the engagement stroke, and the force FP that the compressed air pressure acts on the piston in the actuator must first fall to the difference between the force FL that the elastic force due to elastic deformation of the spring translates into the actuator piston and the force (denoted FSMAX) that each (static) friction force translates into the actuator piston. In the following, a simplified assumption is made about the stress of the clutch in order to better understand the principle of the main part:
assuming that FP is 6000N, FL is 5000N, FS is 1000N, and FSMAX is 2000N at the end of the clutch disengagement stroke, FP-FSMAX is 5000N-2000N, 3000N at the start of the clutch engagement stroke, and therefore the clutch engagement stroke can be started only after the force FP of the compressed air pressure acting on the piston in the actuator has dropped from 6000N to 3000N, and the time consumed for the air release process of this air pressure drop is an important component of the response delay time in the clutch engagement control.
In practice, the friction values in the process of separating and engaging the clutch are influenced by various factors such as mechanism structure type, temperature, the number of kinematic pairs, surface contact form, lubricating conditions and the like, the elastic force caused by elastic deformation of the spring is not only influenced by the clutch type, but also different elastic forces can be caused among different clutches of the same type, and in addition, the same clutch can also change along with time due to the fatigue influence of the diaphragm spring and the change of the wear stroke of the clutch. Therefore, the above mentioned elastic force and friction force are constantly changing, and it is necessary to avoid the above factors in the strategy, and to make the force FP of the clutch actuator acting on the piston by the compressed air pressure as close as possible to the actual FL-FSMAX value, and to reduce the response delay time.
Therefore, in the vehicle self-checking process after the whole vehicle is powered on, that is, before the control method for clutch disengagement provided by the invention, the following measures need to be taken, please refer to the flow of fig. 2:
after the whole vehicle is electrified, outputting a clutch engagement instruction, acquiring the current position of a clutch, and entering the next step;
judging whether the current position of the clutch changes, if so, indicating that the clutch is still in the engaging stroke, and returning to the previous step; if not, indicating that the clutch engagement stroke is finished and reaching the engagement state, taking the current position of the clutch as the full engagement position POS _ engaged of the clutch at the moment, and entering the next step;
the method comprises the following steps of taking POS _ engaged + Disp _ disengaged _ C as a complete disengagement position POS _ disengaged, wherein Disp _ disengaged _ C is a calibrated disengagement stroke and can be obtained through an existing calibration mode, and the complete disengagement position POS _ disengaged represents a position of a clutch in a complete disengagement state; meanwhile, the sum of the complete separation position POS _ disconnected and the compensation calibration stroke range is used as the complete separation position range, wherein the compensation calibration stroke range is related to factors such as the service wear condition and fatigue degree of the clutch, a fixed stroke range can be preset as the compensation calibration stroke range, and a compensation calibration stroke range which changes regularly or irregularly can also be preset according to the specific working condition of the clutch. Specifically, the minimum value of the compensation calibration stroke range is denoted as OFFSET _ L, the maximum value of the compensation calibration stroke range is denoted as OFFSET _ H, correspondingly, the minimum value of the complete separation position range is POS _ disconnected + OFFSET _ L, and the maximum value of the complete separation position range is POS _ disconnected + OFFSET _ H. In this step, POS _ disabled + Disp _ pre _ C is further used as a preset disengaging position POS _ disabled _ pre, where Disp _ pre _ C is a preset calibration stroke corresponding to a distance that the clutch disengaging stroke is extended after the clutch reaches a fully disengaged state, and the preset disengaging position POS _ disabled _ pre is greater than a maximum value POS _ disabled + OFFSET _ H of the fully disengaged position range.
In the self-checking process of the vehicle, the complete separation position range of the corresponding clutch can be obtained when the vehicle runs each time, so that the influence caused by clutch abrasion, fatigue and the like can be avoided in the actual control process of clutch separation.
Referring to fig. 3, a first control flow of the clutch disengagement control method in the embodiment of the present invention includes the following steps:
outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step;
judging whether the current position of the clutch is larger than or equal to a minimum value POS _ disconnected + OFFSET _ L of the range of the complete separation position, if so, indicating that the clutch reaches the complete separation state, taking the current state of the clutch as the complete separation state, continuously outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step; if not, indicating that the clutch does not reach a complete separation state, returning to the previous step, continuously outputting a clutch separation instruction and acquiring the current position of the clutch, and then executing the judgment process of the step; this step is used to ensure that the clutch can execute subsequent control strategies such as shifting in time after actually reaching the fully disengaged state.
Judging whether the current position of the clutch is greater than or equal to a preset separation position POS _ disconnected _ pre, if so, indicating that the separation stroke of the clutch reaches a target position, stopping outputting a clutch separation instruction at the moment, and entering the next step; if not, continuing to output a clutch separation instruction and acquiring the current position of the clutch, and repeating the step; the preset separation position POS _ disconnected _ pre is larger than the maximum value POS _ disconnected + OFFSET _ H of the complete separation position range;
outputting a clutch engagement instruction and acquiring the current position of the clutch, wherein in the step, in order to enable the clutch to respond to the engagement instruction in time, the clutch needs to be retreated to be within a full separation position range, so the step outputs the clutch engagement instruction;
judging whether the current position of the clutch is within the range of the completely-separated position, if so, stopping outputting a clutch engaging instruction, and at the moment, enabling the clutch to be in a completely-separated state, and ending the current separation control process of the clutch; if the current clutch position is greater than the maximum value of the fully disengaged position range (POS _ disengaged + OFFSET _ H), indicating that the clutch has not reached the fully disengaged state, then the process returns to the previous step to continue the engagement stroke.
Referring to fig. 4, a second control flow of the clutch disengagement control method in the embodiment of the present invention includes the following steps:
outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step;
judging whether the current position of the clutch is larger than or equal to a minimum value POS _ disconnected + OFFSET _ L of the range of the complete separation position, if so, indicating that the clutch reaches the complete separation state, taking the current state of the clutch as the complete separation state, continuously outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step; if not, indicating that the clutch does not reach a complete separation state, returning to the previous step, continuously outputting a clutch separation instruction and acquiring the current position of the clutch, and then executing the judgment process of the step; this step is used to ensure that the clutch can execute subsequent control strategies such as shifting in time after actually reaching the fully disengaged state.
Judging whether the current position of the clutch is greater than or equal to a preset separation position POS _ disconnected _ pre, if so, indicating that the separation stroke of the clutch reaches a target position, stopping outputting a clutch separation instruction at the moment, and entering the next step; if not, continuing to output a clutch separation instruction and acquiring the current position of the clutch, and repeating the step; the preset separation position POS _ disconnected _ pre is larger than the maximum value POS _ disconnected + OFFSET _ H of the complete separation position range;
outputting a clutch engagement instruction and acquiring the current position of the clutch, wherein in the step, in order to enable the clutch to respond to the engagement instruction in time, the clutch needs to be retreated to be within a full separation position range, so the step outputs the clutch engagement instruction;
judging whether the current position of the clutch is less than or equal to the maximum value (POS _ disconnected + OFFSET _ H) of the full-separation position range, if so, indicating that the engagement stroke of the clutch reaches or exceeds the maximum value of the full-separation position range, and continuing to judge in the next step; if not, the clutch engagement stroke does not reach the range of the complete separation position, at the moment, the previous step is returned, the clutch engagement instruction is continuously output, the current position of the clutch is obtained, and the judgment of the step is repeated;
judging whether the current position of the clutch is larger than or equal to a minimum value (POS _ disconnected + OFFSET _ L) of a complete separation position range, if so, indicating that the position of the clutch is just positioned in the complete separation position range, stopping outputting a clutch engagement instruction at the moment, enabling the clutch to be in a complete separation state, and ending the separation control process of the clutch; if not, the engaging stroke of the clutch is over the minimum value of the range of the completely-disengaged position, at this time, the clutch is not in the completely-disengaged state and does not meet the following use requirement, therefore, the clutch is required to be controlled to be disengaged again, at this time, the clutch engaging instruction is stopped to be output, the clutch disengaging instruction is output, the current position of the clutch is obtained, and the step of judging whether the current position of the clutch is greater than or equal to the preset disengaging position POS _ disengaged _ pre is returned.
As can be seen from the above technical solutions corresponding to fig. 3 and 4, in the clutch disengagement control process, after the clutch reaches the completely disengaged state, the clutch disengagement stroke is extended by a distance, and then the clutch is retracted to the completely disengaged position range, so that the subsequent control strategy can be executed in time after the clutch reaches the completely disengaged state, and the process of reducing the acting force of the clutch actuator is completed when the clutch is retracted to the completely disengaged position range, so that the response of the clutch engagement command can be greatly improved in the clutch engagement control process.
It should be noted that the method for controlling the clutch disengagement provided by the present invention can be used in the disengagement control process of various types of clutches, that is, the clutch to which the method is applied can adopt different types of clutch actuators, such as an electrically controlled pneumatic actuator, an electrically controlled electric actuator, or an electrically controlled hydraulic actuator. Accordingly, the clutch release command and the clutch engagement command involved in the method may take various forms. The embodiment of the invention preferably adopts an electric control pneumatic actuating mechanism, the electric control pneumatic actuating mechanism comprises a clutch air inlet valve, a clutch air release valve and an actuating cylinder, the clutch is separated when the clutch air inlet valve is opened, and the clutch actuating mechanism is separated at a given speed; when the clutch release valve is opened, the clutch engaging operation is performed, and the clutch actuator is engaged at a predetermined speed. Correspondingly, the output clutch separation instruction in the scheme comprises an instruction for outputting and controlling the opening of the air inlet valve of the clutch, and the output clutch engagement instruction comprises an instruction for outputting and controlling the opening of the air release valve of the clutch.
Preferably, the acquiring of the current clutch position includes acquiring position information detected by a clutch position sensor. In addition, the current position of the clutch can be acquired by the vehicle control unit.
The invention also provides a control device for clutch separation, which comprises a memory and a processor; the processor may be a central processing unit CPU, or an application Specific Integrated circuit asic (application Specific Integrated circuit), such as an ECU, or an Integrated circuit configured to implement one or more embodiments of the present invention, or the like. The memory may include a high-speed RAM memory, a non-volatile memory (non-volatile memory), and the like, such as at least one disk memory. The memory is used for storing programs; the processor is configured to execute the program and realize the steps of the control method of clutch disengagement as described above:
outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step;
judging whether the current position of the clutch is larger than or equal to the minimum value of the complete separation position range, if so, continuously outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step; if not, returning to the previous step;
judging whether the current position of the clutch is greater than or equal to a preset separation position, if so, stopping outputting a clutch separation instruction, and entering the next step; if not, continuing to output a clutch separation instruction and acquiring the current position of the clutch, and repeating the step; wherein the preset separation position is larger than the maximum value of the complete separation position range;
outputting a clutch engagement instruction, acquiring the current position of the clutch, and entering the next step;
judging whether the current position of the clutch is in the range of the completely separated position, if so, stopping outputting a clutch engaging instruction; if the current clutch position is greater than the maximum of the fully disengaged position range, the previous step is returned to.
Alternatively, the detailed function and the expanded function of the program may refer to the above description of the control method of clutch disengagement.
Preferably, the control device for clutch release provided by the invention further comprises a clutch actuator for driving the clutch to release and engage, and the clutch actuator can receive a clutch release command and a clutch engagement command and correspondingly make release and engagement actions according to the commands. Specifically, different types of clutch actuators can be adopted in the invention, such as an electric control pneumatic actuator, an electric control electric actuator or an electric control hydraulic actuator, and correspondingly, clutch separation instructions and clutch connection instructions related in the scheme have various forms. The invention preferably adopts an electric control pneumatic actuating mechanism, the electric control pneumatic actuating mechanism comprises a clutch air inlet valve, a clutch air release valve and an actuating cylinder, the clutch is separated when the clutch air inlet valve is opened, and the clutch actuating mechanism is separated at a given speed; when the clutch release valve is opened, the clutch engaging operation is performed, and the clutch actuator is engaged at a predetermined speed.
Preferably, the clutch disengagement control apparatus provided by the present invention further includes a clutch position sensor for detecting a clutch position. In particular, the clutch position sensor may be implemented in various forms, such as a laser position sensor, an electro-optical position sensor, an ultrasonic position sensor, or the like.
The present invention also provides a readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of controlling clutch disengagement as described above:
outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step;
judging whether the current position of the clutch is larger than or equal to the minimum value of the complete separation position range, if so, continuously outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step; if not, returning to the previous step;
judging whether the current position of the clutch is greater than or equal to a preset separation position, if so, stopping outputting a clutch separation instruction, and entering the next step; if not, continuing to output a clutch separation instruction and acquiring the current position of the clutch, and repeating the step; wherein the preset separation position is larger than the maximum value of the complete separation position range;
outputting a clutch engagement instruction, acquiring the current position of the clutch, and entering the next step;
judging whether the current position of the clutch is in the range of the completely separated position, if so, stopping outputting a clutch engaging instruction; if the current clutch position is greater than the maximum of the fully disengaged position range, the previous step is returned to.
Alternatively, the detailed function and the extended function of the computer program may refer to the description of the control method of clutch disengagement above.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. A method of controlling clutch disengagement, comprising the steps of:
outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step;
judging whether the current position of the clutch is larger than or equal to the minimum value of the complete separation position range, if so, continuously outputting a clutch separation instruction, acquiring the current position of the clutch, and entering the next step; if not, returning to the previous step;
judging whether the current position of the clutch is greater than or equal to a preset separation position, if so, stopping outputting a clutch separation instruction, and entering the next step; if not, continuing to output a clutch separation instruction and acquiring the current position of the clutch, and repeating the step; wherein the preset separation position is larger than the maximum value of the complete separation position range;
outputting a clutch engagement instruction, acquiring the current position of the clutch, and entering the next step;
judging whether the current position of the clutch is in the range of the completely separated position, if so, stopping outputting a clutch engaging instruction; if the current clutch position is greater than the maximum of the fully disengaged position range, the previous step is returned to.
2. The clutch release control method according to claim 1, wherein the step of determining whether the clutch current position is within a fully released position range includes:
judging whether the current position of the clutch is less than or equal to the maximum value of the complete separation position range, if so, entering the next step; if not, returning to the step of outputting the clutch engagement instruction and acquiring the current position of the clutch;
judging whether the current position of the clutch is larger than or equal to the minimum value of the complete separation position range or not, and if so, stopping outputting a clutch engagement instruction; if not, stopping outputting the clutch engaging command, outputting the clutch disengaging command, acquiring the current position of the clutch, and returning to the step of judging whether the current position of the clutch is more than or equal to the preset disengaging position.
3. The method of claim 1, wherein before the step of outputting a clutch release command and obtaining a current clutch position, the method further comprises the steps of:
after the whole vehicle is electrified, outputting a clutch engagement instruction, acquiring the current position of a clutch, and entering the next step;
judging whether the current position of the clutch changes, if so, returning to the previous step; if not, taking the current position of the clutch as a full engagement position, and entering the next step;
the sum of the fully engaged position and the calibrated disengagement stroke is taken as a fully disengaged position, the sum of the fully disengaged position and the preset calibrated stroke is taken as a preset disengaged position, and the sum of the fully disengaged position and the compensated calibrated stroke range is taken as a fully disengaged position range.
4. The clutch release control method according to claim 1, wherein in the step of determining whether the current clutch position is equal to or greater than the minimum value of the full release position range, if so, the current clutch state is taken as the full release state, a clutch release command is continuously output and the current clutch position is obtained, and the next step is proceeded; if not, returning to the previous step.
5. The method of controlling clutch disengagement according to any one of claims 1 to 4, wherein outputting the clutch disengagement command includes outputting a command to control an opening of a clutch intake valve, and wherein outputting the clutch engagement command includes outputting a command to control an opening of a clutch purge valve.
6. The method of controlling clutch disengagement according to any of claims 1 to 4, wherein said acquiring a current clutch position includes acquiring position information detected by a clutch position sensor.
7. A clutch disengagement control apparatus comprising a memory and a processor;
the memory is used for storing programs;
the processor is configured to execute the program and realize the respective steps of the clutch disengagement control method according to any one of claims 1 to 6.
8. The control apparatus for clutch disengagement according to claim 7, further comprising a clutch actuator for driving the clutch to disengage and engage.
9. The control apparatus of clutch disengagement according to claim 8, wherein the clutch actuator comprises a clutch intake valve and a clutch exhaust valve and an actuator cylinder.
10. The control apparatus of clutch release according to any one of claims 7 to 9, characterized by further comprising a clutch position sensor for detecting a clutch position.
11. A readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for controlling clutch disengagement according to any one of claims 1 to 6.
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| CN202110672530.0A CN113417951A (en) | 2021-06-17 | 2021-06-17 | Control method and control device for clutch separation and readable storage medium |
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| CN202110672530.0A CN113417951A (en) | 2021-06-17 | 2021-06-17 | Control method and control device for clutch separation and readable storage medium |
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