CN110261105B - Calibration method and device of electronic control clutch - Google Patents
Calibration method and device of electronic control clutch Download PDFInfo
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- CN110261105B CN110261105B CN201910744880.6A CN201910744880A CN110261105B CN 110261105 B CN110261105 B CN 110261105B CN 201910744880 A CN201910744880 A CN 201910744880A CN 110261105 B CN110261105 B CN 110261105B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/022—Power-transmitting couplings or clutches
Abstract
The invention discloses a calibration method and a device of an electric control clutch, comprising the following steps: obtaining an actual area surrounded by an actual action curve of the electric control clutch, a specified position point and corresponding time, and obtaining an ideal area surrounded by an ideal action curve of the electric control clutch, the specified position point and corresponding time; obtaining an area difference value Delta S between the actual area and the ideal area; and selecting a PWM duty ratio corresponding to the interval according to the interval where the delta S is positioned, wherein the PWM duty ratio corresponds to the valve opening of an actuating mechanism of the electric control clutch, and the larger the PWM duty ratio is, the larger the corresponding valve opening is. According to the method, on the basis of not changing the hardware configuration of the electric control clutch, the action consistency of the clutch actuating mechanism is greatly improved, the defects of size and assembly difference existing in mass production of the electric control clutch are overcome, the power transmission stability of the electric control clutch after being matched with a whole vehicle is effectively improved, the abnormal abrasion in the working process of the clutch is greatly reduced, and the service life of the clutch hardware is prolonged.
Description
Technical Field
The invention relates to the technical field of diesel engines, in particular to a method and a device for calibrating an electronic control clutch.
Background
A clutch: the power assembly is a device which is directly connected with an engine in an automobile transmission system and can transmit the power of the engine to an axle in a switching mode.
An electric control clutch: the clutch is automatically controlled by mechanical, electronic, hydraulic and other modes.
The clutch is used for cutting off power with an engine in a hybrid power system, mainly has the functions of separation and combination actions, needs to be dynamically switched according to actual working conditions, such as separation, combination, semi-linkage and the like, in the running process of the whole vehicle, and has very high frequency of actions in the whole life cycle. Therefore, the control of the clutch actuating mechanism needs to be efficient, timely and accurate in action, otherwise, the adverse consequences of abnormal power transmission of the whole vehicle, clutch abrasion and the like can be caused.
The electric control clutch has a decisive effect on the power transmission of the whole vehicle, but the size difference of the parts of the mass production clutch and the inconsistency of the assembly process can have a certain degree of difference, even disqualification occurs, so that the offline detection of the characteristics of the clutch is very necessary.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a calibration method and a calibration device for an electronic control clutch, which can ensure that the electronic control clutch can keep accurate and stable during working and prolong the service life of parts.
The embodiment of the application provides a calibration method of an electronic control clutch, which comprises the following steps:
obtaining an actual area surrounded by the actual action curve of the electronic control clutch, the specified position point and the corresponding time, and obtaining an ideal area surrounded by the ideal action curve of the electronic control clutch, the specified position point and the corresponding time;
obtaining the area difference value deltaS between the actual area and the ideal area;
and selecting a PWM duty ratio corresponding to the interval according to the interval where the delta S is located, wherein the PWM duty ratio corresponds to the valve opening of an actuating mechanism of the electronic control clutch, and the larger the PWM duty ratio is, the larger the corresponding valve opening is.
Preferably, when the time when the electronically controlled clutch actually reaches the predetermined position does not coincide with the time when the electronically controlled clutch ideally reaches the predetermined position, the PWM duty corresponding to the interval is selected according to the interval where Δ S is located, specifically including:
when the Δ S is greater than the first preset area S1 and less than or equal to the second preset area S2,
PWM1=PWM1+K1*△T；
PWM2=PWM2+K2*△T；
when said deltas is greater than a second preset area S2,
PWM1=PWM1+K1*(△T+(S2-△S)/S2)；
PWM2=PWM2+K2*(△T+(S2-△S)/S2)；
wherein, PWM1 is the PWM duty cycle corresponding to the first valve, and PWM2 is the PWM duty cycle corresponding to the second valve; k1 and K2 are both calibrated values; the delta T is the time difference between the time when the electrically controlled clutch actually reaches a specified position point and the time when the electrically controlled clutch ideally reaches the specified position point; the S1 is less than the S2.
Preferably, when the time when the electronically controlled clutch actually reaches the predetermined position coincides with the time when the electronically controlled clutch ideally reaches the predetermined position, the PWM duty corresponding to the interval is selected according to the interval where Δ S is located, specifically including:
when said Δ S is greater than or equal to a third preset area S3,
PWM1=PWM1+K3*△S；
PWM2=PWM2+K4*△S；
when the Δ S is smaller than the third preset area S3 and larger than the fourth preset area S4,
PWM1=PWM1+K5*△S
PWM2=PWM2+K6*△S
wherein the K3, K4, K5 and K6 and the S4 are all calibrated values; the S4 is less than the S3;
stopping adjusting the PWM duty cycle when the Δ S is less than or equal to the S4.
Preferably, the calibration of K1, K2, K3, K4, K5 and K6 specifically includes:
judging whether the delta S is smaller than S1, if so, setting a calibration value as a preset initial value A1; otherwise, when the Δ S is judged to be larger than the S2, the calibration value is set to be 2a1, and when the Δ S is judged to be larger than S1 and smaller than S2, the calibration value is set to be (a1+2a1) × 0.618.
Preferably, the method further comprises the following steps: and multiplying the PWM1 and the PWM2 by a first preset coefficient and a second preset coefficient respectively, and controlling the enabling of the first valve and the second valve by controlling the values of the first preset coefficient and the second preset coefficient.
The embodiment of the present application further provides a calibration apparatus for an electronic control clutch, including:
the area obtaining unit is used for obtaining an actual area surrounded by the actual action curve of the electronic control clutch, the specified position point and the corresponding time, and obtaining an ideal area surrounded by the ideal action curve of the electronic control clutch, the specified position point and the corresponding time;
a difference obtaining unit, configured to obtain an area difference Δ S between the actual area and the ideal area;
and the duty ratio selection unit is used for selecting a PWM duty ratio corresponding to the interval according to the interval where the delta S is positioned, the PWM duty ratio corresponds to the valve opening degree of the actuating mechanism of the electronic control clutch, and the larger the PWM duty ratio is, the larger the corresponding valve opening degree is.
Preferably, the duty ratio selection unit is specifically configured to, when a time when the electronically controlled clutch actually reaches a predetermined position does not coincide with a time when the electronically controlled clutch ideally reaches the predetermined position, select a PWM duty ratio corresponding to an interval in which Δ S is located, and specifically includes:
when the Δ S is greater than the first preset area S1 and less than or equal to the second preset area S2,
PWM1=PWM1+K1*△T；
PWM2=PWM2+K2*△T；
when said deltas is greater than a second preset area S2,
PWM1=PWM1+K1*(△T+(S2-△S)/S2)；
PWM2=PWM2+K2*(△T+(S2-△S)/S2)；
wherein, PWM1 is the PWM duty cycle corresponding to the first valve, and PWM2 is the PWM duty cycle corresponding to the second valve; k1 and K2 are both calibrated values; the delta T is the time difference between the time when the electrically controlled clutch actually reaches a specified position point and the time when the electrically controlled clutch ideally reaches the specified position point; the S1 is less than the S2.
Preferably, the duty ratio selection unit is specifically configured to, when a time when the electronically controlled clutch actually reaches a predetermined position coincides with a time when the electronically controlled clutch ideally reaches the predetermined position, select a PWM duty ratio corresponding to an interval in which Δ S is located, and specifically includes:
when said Δ S is greater than or equal to a third preset area S3,
PWM1=PWM1+K3*△S；
PWM2=PWM2+K4*△S；
when the Δ S is smaller than the third preset area S3 and larger than the fourth preset area S4,
PWM1=PWM1+K5*△S；
PWM2=PWM2+K6*△S；
wherein the K3, K4, K5 and K6 and the S4 are all calibrated values; the S4 is less than the S3;
stopping adjusting the PWM duty cycle when the Δ S is less than or equal to the S4.
Preferably, the method further comprises the following steps: a calibration unit;
the calibration unit is used for calibrating K1, K2, K3, K4, K5 and K6 in the following way: judging whether the delta S is smaller than S1, if so, setting a calibration value as a preset initial value A1; otherwise, when the Δ S is judged to be larger than the S2, the calibration value is set to be 2a1, and when the Δ S is judged to be larger than S1 and smaller than S2, the calibration value is set to be (a1+2a1) × 0.618.
Preferably, the method further comprises the following steps: a control unit;
the control unit is used for multiplying the PWM1 and the PWM2 by a first preset coefficient and a second preset coefficient respectively, and controlling the enabling of the first valve and the second valve by controlling the values of the first preset coefficient and the second preset coefficient.
Compared with the prior art, the invention has at least the following advantages:
the corresponding ideal area and actual area are obtained according to the fact that the electronic control clutch reaches a specified position point, the area difference value of the ideal area and the actual area is further obtained, the PWM duty ratio corresponding to the interval is selected according to different intervals where the area difference value is located, and the position of the electronic control clutch can be adjusted by adjusting the PWM duty ratio, so that the actual action curve of the electronic control clutch can be close to the ideal action curve by adjusting the PWM duty ratio. According to the method, on the basis of not changing the hardware configuration of the electric control clutch, the action consistency of the clutch actuating mechanism is greatly improved, the defects of size and assembly difference existing in mass production of the electric control clutch are overcome, the power transmission stability of the electric control clutch after being matched with a whole vehicle is effectively improved, the abnormal abrasion in the working process of the clutch is greatly reduced, and the service life of the clutch hardware is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flowchart of a calibration method of an electronically controlled clutch according to the present invention;
FIG. 2 is a graphical illustration of an electronically controlled clutch provided in accordance with the present invention;
FIG. 3 is a schematic diagram of the PWM of FIG. 2 according to the present invention;
FIG. 4 is a flow chart of setting a calibration value according to the present invention;
fig. 5 is a schematic diagram of a calibration device of the electronically controlled clutch provided by the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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.
First, the terms of art are introduced:
EOL: and offline detection for meeting the requirements of function detection and product configuration before product offline.
The application is based on the consistency difference exists between the automatically controlled clutches of batch production, through detecting that the automatically controlled clutch EOL rolls off the production line, carry out the automatic proofreading of control parameter to the clutch that rolls off the production line, control actuating mechanism action position and contrast with the ideal control curve in actuating mechanism working process, time delay, the action deviation that appears the action is adjusted, guarantee the uniformity, the accuracy of clutch actuating mechanism action, very big improvement the stationarity of power transmission and can the at utmost reduce the wearing and tearing of clutch.
The first embodiment of the method comprises the following steps:
referring to fig. 1, a flowchart of a calibration method of an electronically controlled clutch provided by the present application is shown.
The calibration method of the electric control clutch comprises the following steps:
s101: and acquiring an actual area surrounded by the actual action curve of the electronic control clutch, the specified position point and the corresponding time, and acquiring an ideal area surrounded by the ideal action curve of the electronic control clutch, the specified position point and the corresponding time.
The position of the electrically controlled clutch is determined by the actuator, which is determined by the opening of the solenoid valve. The opening of the solenoid valve is determined by the duty ratio of the PWM. Thus, adjusting the PWM duty cycle can adjust the position of the electronically controlled clutch.
Reference may be made in particular to the graph of the electronically controlled clutch shown in fig. 2.
The abscissa of the graph shown in fig. 2 is time and the ordinate is displacement.
Fig. 3 is a schematic diagram of the corresponding PWM of fig. 2.
The prescribed location point may be factory-given (Position 1, Position2, Position3, etc.). Taking the integration process as an example, the Position calibration monitoring is performed on the clutch according to the specified Position points (e.g., three specified Position points Position1, Position2, and Position 3) provided by the manufacturer, but the existing strategy has no calibration method when the clutch executing structure reaches Position1, Position2, and Position3, and according to which path. According to the actual clutch characteristics, the clutch executing device has the effects of high efficiency, accuracy and minimum abrasion according to the ideal action curve path in the graph. Therefore, the idea of the application is to increase a control strategy in the action process of the clutch, realize that the actual action curve of the clutch approaches to the ideal action curve, and make the actual action curve of the clutch and the ideal action curve highly coincident.
The following is a detailed description taking region (r) as an example:
the action is performed rightward along the time axis T of the horizontal axis with the point Q as a starting point. The controller takes an ideal action curve as a control target during the action. The Position points Position1, Position2, and Position3 are defined as halfway "time-Position" check points.
As shown in fig. 2, the ideal operation curve, i.e., the ideal curve in the figure, and the ideal area refers to an area enclosed by a point Q on the ordinate axis, a point C on the ordinate axis, an abscissa axis, and the ideal curve.
The actual action curve, i.e. the actual curve in the figure, is described by taking the actual curve 2 as an example in conjunction with the figure. The position1 corresponding to the actual curve 2 is the point E, and the actual area is the area enclosed by the point Q on the ordinate axis, the point E on the abscissa axis, and the actual curve 2.
The above description is only given by taking the Position1 as an example, and similarly, the Position2 and the Position3 are similar and will not be described again.
S102: and obtaining the area difference value deltaS between the actual area and the ideal area.
Δ S above generally refers to the difference in area between the actual area and the ideal area. Specifically, the position1 is taken as an example, that is, the area difference between the actual curve 2 and the ideal curve is Δ S, that is, Δ S at this time is the area enclosed by the point Q, the point C, and the point E in the graph and the actual curve 2 and the ideal curve.
S103: and selecting a PWM duty ratio corresponding to the interval according to the interval where the delta S is located, wherein the PWM duty ratio corresponds to the valve opening of an actuating mechanism of the electronic control clutch, and the larger the PWM duty ratio is, the larger the corresponding valve opening is.
According to the method provided by the embodiment, the corresponding ideal area and actual area are obtained according to the fact that the electronic control clutch reaches the specified position point, the area difference value between the ideal area and the actual area is further obtained, the PWM duty ratio corresponding to the interval is selected according to the different intervals in which the area difference value is located, and the position of the electronic control clutch can be adjusted by adjusting the PWM duty ratio, so that the actual action curve of the electronic control clutch can be close to the ideal action curve by adjusting the PWM duty ratio. According to the method, on the basis of not changing the hardware configuration of the electric control clutch, the action consistency of the clutch actuating mechanism is greatly improved, the defects of size and assembly difference existing in mass production of the electric control clutch are overcome, the power transmission stability of the electric control clutch after being matched with a whole vehicle is effectively improved, the abnormal abrasion in the working process of the clutch is greatly reduced, and the service life of the clutch hardware is prolonged.
Example two:
the following specifically describes that the area difference value corresponds to different control strategies when the area difference value is in different intervals.
When the actual time of the electrically controlled clutch reaching the specified position point is not consistent with the ideal time of the electrically controlled clutch reaching the specified position point, selecting the PWM duty ratio corresponding to the interval according to the interval where the delta S is located, specifically comprising:
when the Δ S is greater than the first preset area S1 and less than or equal to the second preset area S2,
PWM1=PWM1+K1*△T；
PWM2=PWM2+K2*△T；
when said deltas is greater than a second preset area S2,
PWM1=PWM1+K1*(△T+(S2-△S)/S2)；
PWM2=PWM2+K2*(△T+(S2-△S)/S2)；
wherein, PWM1 is the PWM duty cycle corresponding to the first valve, and PWM2 is the PWM duty cycle corresponding to the second valve; k1 and K2 are both calibrated values; the delta T is the time difference between the time when the electrically controlled clutch actually reaches a specified position point and the time when the electrically controlled clutch ideally reaches the specified position point; the S1 is less than the S2.
When the actual time of the electrically controlled clutch reaching the specified position point is consistent with the ideal time of the electrically controlled clutch reaching the specified position point, selecting the PWM duty ratio corresponding to the interval according to the interval where the Δ S is located, specifically comprising:
when said Δ S is greater than or equal to a third preset area S3,
PWM1=PWM1+K3*△S；
PWM2=PWM2+K4*△S；
when the Δ S is smaller than the third preset area S3 and larger than the fourth preset area S4,
PWM1=PWM1+K5*△S
PWM2=PWM2+K6*△S
wherein the K3, K4, K5 and K6 and the fourth preset area S4 are all calibrated values; the S4 is less than the S3. When Δ S is smaller than S4, the drive adjustment of the duty ratio is stopped. At this time, the area difference Δ S between the actual area and the ideal area is determined to be within the specified S4, and the technical requirements are met.
Setting of the calibration value during calibration is described below with reference to fig. 4, taking an exemplary scenario when the actual time of the electronically controlled clutch reaching the specified position point is not consistent with the ideal time of the electronically controlled clutch reaching the specified position point. Referring to fig. 4, a flow chart for setting calibration values provided by the present invention is shown.
The calibration of K1, K2, K3, K4, K5 and K6 specifically comprises the following steps:
judging whether the delta S is smaller than S1, if so, adopting a calibration value K1, and setting a calibration value K1 as a preset initial value A1; otherwise, when the Δ S is determined to be greater than S2, a calibration value K2 is adopted, the calibration value K2 is set to be 2a1, and when the Δ S is determined to be greater than S1 and less than S2, a calibration value K3 is adopted, and the calibration value K3= (K1+ K2) × 0.618 is set to be (a1+2a1) × 0.618. Then continuing to judge whether the Delta S is less than or equal to S1, if so, still calibrating by K3; if not, then calibrate with K4. Wherein K4= (K1+ K3) × 0.618. In the present embodiment, Kn = (K1+ Kn-1) × 0.618.
The operation is carried out until an ideal action curve is approached, namely the area difference Delta S between the actual area and the ideal area is finally determined to be within the specified S1, and the technical requirement is met.
The above embodiments are described by taking two solenoid valves as an example, and generally include a fast valve and a slow valve. The fast valve performs coarse adjustment, and the slow valve performs fine adjustment. It will be appreciated that the adjustment can also be performed by means of a solenoid valve, for example only a fast valve, or only a slow valve. When a valve is selected, the PWM duty cycle can be multiplied by a factor, setting the factor to 0, and the valve is not functional and does not need to be adjusted. When the coefficient is 1, the valve is adjusted and needs to be controlled.
Namely, the method provided by the invention can also comprise the following steps: and multiplying the PWM1 and the PWM2 by a first preset coefficient and a second preset coefficient respectively, and controlling the enabling of the first valve and the second valve by controlling the values of the first preset coefficient and the second preset coefficient.
The method provided by the application can automatically write the adjusted PWM duty ratio into the controller ECU and solidify the PWM duty ratio, and during actual work, the work of the electromagnetic valve is controlled according to the adjusted PWM duty ratio, so that the actual action curve of the electronic control clutch approaches to the ideal action curve. The consistency of the actual action curve and the ideal action curve of the tested electric control clutch is kept high, and the high efficiency and accuracy of each action of the clutch are further ensured. The technical problems of low accuracy of the action process, untimely response and serious hardware abrasion caused by poor consistency of the electric control clutches in batch production are solved.
Based on the calibration device for the electronic control clutch provided by the above embodiment, the embodiment of the invention also provides the calibration device for the electronic control clutch, which is described in detail below with reference to the accompanying drawings.
It will be appreciated that the calibration arrangement may be located within the ECU.
Referring to fig. 5, the drawing is a schematic diagram of a calibration device of an electronically controlled clutch provided in the present application.
The calibration device of the electronic control clutch provided by the embodiment comprises:
an area obtaining unit 501, configured to obtain an actual area surrounded by an actual motion curve of the electronic control clutch and the specified position point and corresponding time, and obtain an ideal area surrounded by an ideal motion curve of the electronic control clutch and the specified position point and corresponding time;
a difference obtaining unit 502, configured to obtain an area difference Δ S between the actual area and the ideal area;
a duty ratio selection unit 503, configured to select, according to an interval where Δ S is located, a PWM duty ratio corresponding to the interval, where the PWM duty ratio corresponds to a valve opening degree of an actuator of the electronically controlled clutch, and the larger the PWM duty ratio is, the larger the corresponding valve opening degree is.
The duty ratio selection unit is specifically configured to, when a time when the electronically controlled clutch actually reaches a predetermined position does not coincide with a time when the electronically controlled clutch ideally reaches the predetermined position, select a PWM duty ratio corresponding to an interval in which Δ S is located, and specifically includes:
when the Δ S is greater than the first preset area S1 and less than or equal to the second preset area S2,
PWM1=PWM1+K1*△T；
PWM2=PWM2+K2*△T；
when said deltas is greater than a second preset area S2,
PWM1=PWM1+K1*(△T+(S2-△S)/S2)；
PWM2=PWM2+K2*(△T+(S2-△S)/S2)；
wherein, PWM1 is the PWM duty cycle corresponding to the first valve, and PWM2 is the PWM duty cycle corresponding to the second valve; k1 and K2 are both calibrated values; the delta T is the time difference between the time when the electrically controlled clutch actually reaches a specified position point and the time when the electrically controlled clutch ideally reaches the specified position point; the S1 is less than the S2.
The duty ratio selection unit is specifically configured to, when a time when the electronically controlled clutch actually reaches a predetermined position coincides with a time when the electronically controlled clutch ideally reaches the predetermined position, select a PWM duty ratio corresponding to an interval in which Δ S is located, and specifically includes:
when said Δ S is greater than or equal to a third preset area S3,
PWM1=PWM1+K3*△S；
PWM2=PWM2+K4*△S；
when the Δ S is smaller than the third preset area S3 and larger than the fourth preset area S4,
PWM1=PWM1+K5*△S；
PWM2=PWM2+K6*△S；
wherein the K3, K4, K5 and K6 and the S4 are all calibrated values; the S4 is less than the S3;
stopping adjusting the PWM duty cycle when the Δ S is less than or equal to the S4.
The apparatus may further include: a calibration unit;
the calibration unit is used for calibrating K1, K2, K3, K4, K5 and K6 in the following way: judging whether the delta S is smaller than S1, if so, setting a calibration value as a preset initial value A1; on the contrary, when the Δ S is determined to be greater than S2, the calibration value is set to 2a1, and when the Δ S is determined to be greater than S1 and less than S2, the calibration value is set to (a1+2a1) × 0.618 (the final formula is Kn = (K1+ Kn-1) × 0.618).
In addition, the apparatus may further include: a control unit;
the control unit is used for multiplying the PWM1 and the PWM2 by a first preset coefficient and a second preset coefficient respectively, and controlling the enabling of the first valve and the second valve by controlling the values of the first preset coefficient and the second preset coefficient.
According to the device provided by the embodiment, the corresponding ideal area and actual area are obtained according to the fact that the electronic control clutch reaches the specified position point, the area difference value between the ideal area and the actual area is further obtained, the PWM duty ratio corresponding to the interval is selected according to the different intervals in which the area difference value is located, and the position of the electronic control clutch can be adjusted by adjusting the PWM duty ratio, so that the actual action curve of the electronic control clutch can be close to the ideal action curve by adjusting the PWM duty ratio.
The device greatly improves the consistency of the action of the clutch actuating mechanism on the basis of not changing the hardware configuration of the electric control clutch, solves the defects of size and assembly difference existing in the electric control clutch of volume production, effectively improves the power transmission stability of the electric control clutch after being matched with the whole vehicle, greatly reduces the abnormal abrasion in the working process of the clutch, and improves the service life of the clutch hardware.
It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (8)
1. A calibration method of an electronic control clutch is characterized by comprising the following steps:
obtaining an actual area surrounded by an actual action curve of the electronic control clutch, a specified position point and corresponding time, and obtaining an ideal area surrounded by an ideal action curve of the electronic control clutch, the specified position point and corresponding time;
obtaining the area difference value deltaS between the actual area and the ideal area;
selecting a PWM duty ratio corresponding to the interval according to the interval where the delta S is located, wherein the PWM duty ratio corresponds to the valve opening of an actuating mechanism of the electronic control clutch, and the larger the PWM duty ratio is, the larger the corresponding valve opening is;
when the actual time of the electrically controlled clutch reaching the specified position point is not consistent with the ideal time of the electrically controlled clutch reaching the specified position point, selecting the PWM duty ratio corresponding to the interval according to the interval where the delta S is located, specifically comprising:
when the Δ S is greater than the first preset area S1 and less than or equal to the second preset area S2,
PWM1=PWM1+K1*△T；
PWM2=PWM2+K2*△T；
when said deltas is greater than a second preset area S2,
PWM1=PWM1+K1*(△T+(S2-△S)/S2)；
PWM2=PWM2+K2*(△T+(S2-△S)/S2)；
wherein, PWM1 is the PWM duty cycle corresponding to the first valve, and PWM2 is the PWM duty cycle corresponding to the second valve; k1 and K2 are both calibrated values; the delta T is the time difference between the time when the electrically controlled clutch actually reaches a specified position point and the time when the electrically controlled clutch ideally reaches the specified position point; the S1 is less than the S2.
2. The method according to claim 1, wherein when the time at which the electronically controlled clutch actually reaches the predetermined position point coincides with the time at which the electronically controlled clutch ideally reaches the predetermined position point, selecting the PWM duty corresponding to the interval in which Δ S is located includes:
when said Δ S is greater than or equal to a third preset area S3,
PWM1=PWM1+K3*△S；
PWM2=PWM2+K4*△S；
when the Δ S is smaller than the third preset area S3 and larger than the fourth preset area S4,
PWM1=PWM1+K5*△S
PWM2=PWM2+K6*△S
wherein the K3, K4, K5 and K6 and the S4 are all calibrated values; the S4 is less than the S3;
stopping adjusting the PWM duty cycle when the Δ S is less than or equal to the S4.
3. The method as claimed in claim 2, wherein the calibration of K1, K2, K3, K4, K5 and K6 specifically comprises:
judging whether the delta S is smaller than S1, and if so, setting a calibration value K1 as a preset initial value A1; otherwise, when the Δ S is judged to be larger than the S2, the calibration value K2 is set to be 2a1, and when the Δ S is judged to be larger than S1 and smaller than S2, the calibration value K3 is set to be (a1+2a1) × 0.618;
then, continuously judging whether the Delta S is less than or equal to S1, if so, still calibrating by using K3; if not, then demarcate with K4; wherein K4= (K1+ K3) × 0.618, Kn = (K1+ Kn-1) × 0.618.
4. The method according to any one of claims 1-3, further comprising: and multiplying the PWM1 and the PWM2 by a first preset coefficient and a second preset coefficient respectively, and controlling the enabling of the first valve and the second valve by controlling the values of the first preset coefficient and the second preset coefficient.
5. A calibration device of an electronic control clutch is characterized by comprising:
the area obtaining unit is used for obtaining an actual area surrounded by an actual action curve of the electronic control clutch, a specified position point and corresponding time and obtaining an ideal area surrounded by an ideal action curve of the electronic control clutch, the specified position point and corresponding time;
a difference obtaining unit, configured to obtain an area difference Δ S between the actual area and the ideal area;
the duty ratio selection unit is used for selecting a PWM duty ratio corresponding to an interval where the delta S is located, the PWM duty ratio corresponds to the valve opening degree of an actuating mechanism of the electronic control clutch, and the larger the PWM duty ratio is, the larger the corresponding valve opening degree is;
the duty ratio selection unit is specifically configured to, when a time when the electronically controlled clutch actually reaches a predetermined position does not coincide with a time when the electronically controlled clutch ideally reaches the predetermined position, select a PWM duty ratio corresponding to an interval in which Δ S is located, and specifically includes:
when the Δ S is greater than the first preset area S1 and less than or equal to the second preset area S2,
PWM1=PWM1+K1*△T；
PWM2=PWM2+K2*△T；
when said deltas is greater than a second preset area S2,
PWM1=PWM1+K1*(△T+(S2-△S)/S2)；
PWM2=PWM2+K2*(△T+(S2-△S)/S2)；
wherein, PWM1 is the PWM duty cycle corresponding to the first valve, and PWM2 is the PWM duty cycle corresponding to the second valve; k1 and K2 are both calibrated values; the delta T is the time difference between the time when the electrically controlled clutch actually reaches a specified position point and the time when the electrically controlled clutch ideally reaches the specified position point; the S1 is less than the S2.
6. The apparatus according to claim 5, wherein the duty ratio selection unit is configured to select a PWM duty ratio corresponding to a section in which the Δ S is located when the time at which the electronically controlled clutch actually reaches the predetermined position coincides with the time at which the electronically controlled clutch ideally reaches the predetermined position, and specifically includes:
when said Δ S is greater than or equal to a third preset area S3,
PWM1=PWM1+K3*△S；
PWM2=PWM2+K4*△S；
when the Δ S is smaller than the third preset area S3 and larger than the fourth preset area S4,
PWM1=PWM1+K5*△S；
PWM2=PWM2+K6*△S；
wherein the K3, K4, K5 and K6 and the S4 are all calibrated values; the S4 is less than the S3;
stopping adjusting the PWM duty cycle when the Δ S is less than or equal to the S4.
7. The apparatus of claim 6, further comprising: a calibration unit;
the calibration unit is used for calibrating K1, K2, K3, K4, K5 and K6 in the following way: judging whether the delta S is smaller than S1, and if so, setting a calibration value K1 as a preset initial value A1; otherwise, when the Δ S is judged to be larger than the S2, the calibration value K2 is set to 2a1, and when the Δ S is judged to be larger than S1 and smaller than S2, the calibration value K3 is set to (a1+2a1) × 0.618; then, continuously judging whether the Delta S is less than or equal to S1, if so, still calibrating by using K3; if not, then demarcate with K4; wherein K4= (K1+ K3) × 0.618, Kn = (K1+ Kn-1) × 0.618.
8. The apparatus of any one of claims 5-7, further comprising: a control unit;
the control unit is used for multiplying the PWM1 and the PWM2 by a first preset coefficient and a second preset coefficient respectively, and controlling the enabling of the first valve and the second valve by controlling the values of the first preset coefficient and the second preset coefficient.
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