KR20160124529A - Apparatus and method for controlling clutch - Google Patents

Abstract

Disclosed are an apparatus and a method for controlling a clutch in the present invention. The clutch control apparatus comprises: a torque calculating unit which determines target torque for operations of the clutch; and a torque management unit which compensates for the target torque by considering friction of the clutch depending on temperature changes of the clutch. That is, the present invention compensates for friction by easily predicting a clutch characteristic on the basis of temperature changes of the clutch, thereby cutting a cumbersome process which compensates for friction through a following way such as the existing clutch learning. In other words, the present invention compensates for friction in advance by predicting a clutch characteristic depending on temperature changes of the clutch at a torque calculating point, a previous step of calculating a target stroke, thereby improving a driving performance compared with the following way. In addition, the present invention compensates for friction by considering the temperature of a central point where specific heats within the clutch and a peripheral function unit are different, the temperature of surrounding points, and a temperature difference between temperatures of the central point and the surrounding points together, such that a friction coefficient can be calculated by reflecting a clutch characteristic predicted by a more precisely unit, compared with the conventional friction compensation only with an average temperature of the clutch. Therefore, even if the clutch characteristic is abruptly changed, the clutch system can be controlled in a stable way.

Description

[0001] APPARATUS AND METHOD FOR CONTROLLING CLUTCH [0002]

The present invention relates to an apparatus and method for controlling a clutch, and more particularly, to an apparatus and method for compensating friction based on a clutch temperature change of DCT (Dual Clutch Transmission).

Generally, a clutch system with DCT (Dual Clutch Transmission) controls the clutch actuator using a clutch curve defined in relation to the maximum transferable torque and its corresponding stroke.

That is, the clutch system determines the target stroke of the clutch based on the clutch curve when the target torque of the clutch is determined.

When the energizing operation such as the oscillation and the shifting is performed by the target stroke determined by the above-described method, the clutch performance is decreased by the change of the clutch characteristic such as the geometric change due to the increase of the average temperature of the clutch friction surface or the change of the characteristic of the friction surface There is a problem.

In order to solve this problem, friction was conventionally compensated based on the average temperature of the clutch.

However, if the friction is compensated using only the average temperature of the clutch, the clutch characteristics after the energy application such as the oscillation and the shift can not be reflected.

That is, although the average temperature of the clutch gradually increases, the clutch characteristic is restored to its original characteristic after the rapid change, so that it is difficult to reflect the characteristics of the clutch using the average temperature.

On the other hand, friction can be compensated by reflecting clutch characteristics that vary according to various situations through clutch learning.

However, since the clutch characteristic is predicted through the repetitive running process, it is necessary to repeatedly perform the cumbersome process of predicting the clutch characteristics and compensating the friction.

In order to solve such a problem, there is a demand for a technique for easily detecting the clutch characteristic and compensating for the friction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an apparatus and a method for compensating friction based on a clutch temperature change of DCT (Dual Clutch Transmission).

To achieve the above object, according to a first aspect of the present invention, there is provided a clutch control apparatus comprising: a torque calculating section for determining a target torque for operation of a clutch; And a torque managing unit for compensating the target torque in consideration of friction of the clutch according to the temperature change of the clutch.

And the clutch includes a first clutch and a second clutch disposed around an engine input shaft for connection with the engine.

Wherein the torque management unit comprises: a temperature predicting unit for predicting a temperature of the engine input shaft, the first clutch and the second clutch; A friction coefficient calculating unit for calculating a friction coefficient of the clutch using the predicted result; And a compensator that compensates the friction coefficient to the target torque to calculate the final operating torque.

Wherein the temperature predicting unit predicts a temperature at a first peripheral point where friction between the first center point of the first clutch and the engine input shaft occurs and the temperature of the second center point in the second clutch, Wherein a temperature of a third peripheral point in the engine input shaft and a temperature of a third peripheral point at which friction with the first clutch occur and a second peripheral point temperature at which friction with the input shaft occurs, And the temperature of the fourth peripheral point where friction with the clutch occurs is predicted.

Wherein the friction coefficient calculating unit calculates the friction coefficient based on the temperature of the first to third center points, the temperature of the first to fourth surrounding points, the temperature difference between the first surrounding point and the first center point, 2, the temperature difference between the center point and the third peripheral point, and the temperature difference between the fourth peripheral point and the third center point by a multiplication, .

And the final operating torque is calculated by dividing the target torque by the friction coefficient.

And a stroke calculating section for calculating a target stroke corresponding to the final operating torque.

According to a second aspect of the present invention, there is provided a clutch control method including: determining a target torque for operation of a clutch; And compensating the target torque in consideration of the friction of the clutch according to the temperature change of the clutch.

And the clutch includes a first clutch and a second clutch disposed around an engine input shaft for connection with the engine.

The step of compensating for the target torque includes the steps of: predicting a temperature of the engine input shaft, the first clutch and the second clutch; Calculating a friction coefficient of the clutch using the predicted result; And calculating the final operating torque by compensating the target torque for the friction coefficient.

Wherein the step of predicting the temperature includes the steps of: predicting the temperature of the first peripheral point where friction between the first center point and the engine input shaft occurs in the first clutch, Estimating a temperature of a second peripheral point at which friction between the temperature and the engine input shaft occurs, and estimating a temperature at a third center point in the engine input shaft and a third peripheral point at which friction with the first clutch occurs Temperature, and a temperature of a fourth peripheral point at which friction with the second clutch occurs.

The step of calculating the friction coefficient may further include calculating a temperature difference between the first center point and the third center point, the temperature of the first to fourth surrounding points, the temperature difference between the first surrounding point and the first center point, And a temperature difference between the third peripheral point and the third central point and a temperature difference between the fourth peripheral point and the third central point are multiplied by a multiplication to obtain a temperature change result value Calculating; And calculating a friction coefficient corresponding to the temperature change result value.

And the final operating torque is calculated by dividing the target torque by the friction coefficient.

And calculating a target stroke corresponding to the final operating torque.

Therefore, according to the apparatus and method for controlling the clutch of the present invention, the clutch characteristic is easily predicted based on the temperature change of the clutch and the friction is compensated, so that the troublesome process of compensating the friction through the following method such as clutch learning Can be shortened. That is, the clutch characteristic according to the temperature change of the clutch is predicted at the torque calculation time, which is the stage before the target stroke is calculated, and the friction performance is predicted in advance, so that the running performance can be improved as compared with the following method.

In addition, according to the present invention, only the average temperature of the conventional clutch is compared with the average temperature of the clutch as the friction is compensated by considering the temperature of the center point, the temperature of the peripheral point, and the temperature difference between the center point and the peripheral point, It is possible to calculate the friction coefficient by reflecting the clutch characteristic predicted in a more precise unit than that in which the friction is compensated by the friction coefficient. Therefore, the clutch system can be stably controlled even if the clutch characteristic is rapidly changed.

1 is a diagram schematically showing a clutch system according to an embodiment of the present invention.
FIG. 2 is a diagram showing an example of DCT (Dual Clutch Transmission) shown in FIG.
3 is a diagram specifically showing a functional portion of the clutch control device shown in Fig.
4 is a diagram illustrating an example of predicting a temperature using a clutch temperature prediction model according to an embodiment of the present invention.
5 is a view schematically showing a process of calculating a target stroke by compensating for a target torque according to an embodiment of the present invention.
6 is a flowchart illustrating an operation for compensating friction based on a temperature change of a clutch according to an embodiment of the present invention.

It is noted that the technical terms used herein are used only to describe specific embodiments and are not intended to limit the invention. It is also to be understood that the technical terms used herein are to be interpreted in a sense generally understood by a person skilled in the art to which the present invention belongs, Should not be construed to mean, or be interpreted in an excessively reduced sense. Further, when a technical term used herein is an erroneous technical term that does not accurately express the spirit of the present invention, it should be understood that technical terms that can be understood by a person skilled in the art are replaced. In addition, the general terms used in the present invention should be interpreted according to a predefined or prior context, and should not be construed as being excessively reduced.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or similar elements throughout the several views, and redundant description thereof will be omitted. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a diagram schematically showing a clutch system according to an embodiment of the present invention. FIG. 2 is a diagram showing an example of DCT (Dual Clutch Transmission) shown in FIG. 3 is a diagram specifically showing a functional portion of the clutch control device shown in Fig. 4 is a diagram illustrating an example of predicting a temperature using a clutch temperature prediction model according to an embodiment of the present invention. 5 is a view schematically showing a process of calculating a target stroke by compensating for a target torque according to an embodiment of the present invention.

1, a clutch system 100 according to an embodiment of the present invention includes a DCT (Dual Clutch Transmission) 110, an engine 120, and a clutch control device 130. As shown in FIG.

The DCT 110 includes a first clutch 111 and a second clutch 112 that transmit engine power to a speed change stage composed of an odd speed change stage and an even speed change stage.

The DCT 110 transmits engine power according to the operation of the two clutches 111 and 112 around the engine input shaft 113 for connection to the engine 120 as shown in FIG.

More specifically, when the first clutch 111 is engaged with the engine input shafts 113 and A and engaged with the engine 120, the DCT 110 is coupled to the engine 120 via the first clutch 111 Engine power is transmitted. At this time, the second clutch 112 is disengaged from the engine 120.

Meanwhile, when the second clutch 112 is coupled to the engine 120 via the engine input shafts 113 and B, the DCT 110 transmits the engine power through the second clutch 112 do. At this time, the first clutch 111 is released from the engine 120.

When the target torque for the operation of the first clutch 111 and the second clutch 112 in the DCT 110 is determined, the clutch control device 130 compensates the friction corresponding to the temperature change of the clutch to the target torque, After the operation torque is generated, the target stroke corresponding to the final operating torque is calculated.

Hereinafter, with reference to Fig. 3, each functional section in the clutch control apparatus for compensating the friction based on the temperature change of the clutch will be described in more detail.

The clutch control device 130 includes a torque calculating section 131, a torque managing section 132 and a stroke calculating section 133. [

The torque calculating section 131 calculates the target torque for the operation of the first clutch 111 and the second clutch 112 in the DCT 110. [ The torque calculating section 131 notifies the torque managing section 132 that the target torque has been calculated.

The torque managing unit 132 predicts the clutch characteristic according to the temperature change of the clutch at the torque calculating time, which is the stage before the target stroke is calculated, to compensate the friction.

That is, the torque management section 132 calculates the friction coefficient of the clutch in accordance with the temperature change of the clutch, compensates the target friction torque, and calculates the final operating torque.

To this end, the torque managing unit 132 includes a predicting unit 1321, a friction coefficient calculating unit 1322, and a compensating unit 1323.

The predicting section 1321 predicts the temperatures of the first clutch 111, the second clutch 112 and the engine input shaft 113 in the DCT 110, respectively.

That is, the predicting section 1321 calculates the temperatures of the center point and the peripheral points of the first clutch 111, the second clutch 112 and the engine input shaft 113 using the clutch temperature prediction model as shown in Fig. 4 Predict.

Here, the clutch temperature prediction model may be an experimental value calculated through experimentation of the temperature characteristics of the respective functional units in the clutch system according to a change in conditions such as oscillation and shifting of the clutch system, May be a predetermined reference temperature through software-based modeling taking into account the conditions.

More specifically, the predicting unit 1321 predicts the temperature of the first center point CP1 in the first clutch 111 using the clutch temperature prediction model. The predicting unit 1321 also predicts the temperature of any first peripheral point SP1 at which friction with the engine input shaft 113 in the first clutch 111 occurs.

Likewise, the predicting section 1321 predicts the temperature of the second center point CP2 in the second clutch 112 by using the clutch temperature prediction model. The predicting unit 1321 also predicts the temperature of an arbitrary second peripheral point SP2 where friction with the engine input shaft 113 in the second clutch 112 occurs.

Likewise, the predicting section 1321 predicts the temperature of the third center point CP3 in the engine input shaft 113 using the clutch temperature predicting model. The predicting section 1321 predicts the temperature of an arbitrary third peripheral point SP3 at which friction with the first clutch 111 in the engine input shaft 113 occurs. Further, the predicting section 1321 predicts the temperature of any optional fourth peripheral point SP4 at which friction with the second clutch 112 occurs.

Here, the center point is a point at which the temperature change due to friction is relatively slowly increased and decreased, because the specific heat at each of the first clutch 111, the second clutch 112, and the engine input shaft 113 is larger than other peripheral points. On the other hand, the peripheral point is a point where the specific heat is smaller than the center point, except for the center point, so that the temperature change due to the friction is relatively increased and decreased. At this time, the peripheral points can be selected as an arbitrary point by the user so that the optimum friction coefficient is calculated according to the conditional change according to the condition.

Thereafter, the predicting section 1321 generates a temperature prediction result for each of the first clutch 111, the second clutch 112 and the engine input shaft 113, and transfers the result to the friction coefficient calculating section 1322. [

1 and 3, the friction coefficient calculating unit 1322 receives the temperature prediction result from the predicting unit 1321, and calculates the friction coefficient.

That is, the friction coefficient calculating section 1322 calculates the friction coefficient between the center point of at least one of the first clutch 111, the second clutch 112 and the engine input shaft 113, the temperature of the surrounding point, The friction coefficient is calculated using the temperature difference.

More specifically, the friction coefficient calculating section 1322 detects the temperatures of the first center point CP1 and the first peripheral point SP1 in the first clutch 111 from the temperature prediction result. The friction coefficient calculating section 1322 detects the temperatures of the second center point CP2 and the second peripheral point SP2 in the second clutch 112 from the temperature prediction result. The friction coefficient calculating unit 1322 detects the temperatures of the third center point CP3, the third peripheral point SP3 and the fourth peripheral point SP4 in the engine input shaft 113 from the temperature prediction result.

The friction coefficient calculating section 1322 calculates the temperature difference between the center point and the peripheral points of the first clutch 111, the second clutch 112 and the engine input shaft 113, respectively.

That is, the friction coefficient calculating unit 1322 calculates the first temperature difference by subtracting the temperature of the first center point CP1 from the temperature of the first surrounding point SP1. The friction coefficient calculating unit 1322 calculates the second temperature difference by subtracting the temperature of the second center point CP2 from the temperature of the second surrounding point SP2. The friction coefficient calculating unit 1322 calculates the third temperature difference by subtracting the temperature of the third center point CP3 from the temperature of the third surrounding point SP3. The friction coefficient calculating unit 1322 calculates the fourth temperature difference by subtracting the temperature of the third center point CP3 from the temperature of the fourth peripheral point SP4.

Thereafter, the friction coefficient calculating unit 1322 calculates the friction coefficient calculating unit 1322 based on the temperature of the first to third center points CP1 to CP3, the temperatures of the first to fourth peripheral points SP1 to SP4, Are combined by multiplication to calculate a temperature change result value as shown in equation (1).

[Equation 1]

_{Factor friction = (Factor Temp / T1} ) * (Factor Temp / T2) * (Factor Temp / T3) * (Factor Temp / T4) * (Factor Temp / T5) * (Factor Temp / T6) * (Factor Temp / T7 _{) * (Factor Temp / (T4} -T1)) * (Factor Temp / (T7-T3)) * (Factor Temp / (T5-T2)) * (Factor Temp / (T6-T2))

Here, Factor _friction is a result of temperature change, Factor _{Temp / T1} is the temperature of the first center point CP1, Factor _{Temp / T2} is the temperature of the second center point CP2, and Factor _{Temp /} the temperature of the center point (CP3), Factor _{Temp / T4} are the first and the temperature around the point (SP1), Factor _{Temp / T5} is a second and a temperature around the point (SP2), Factor _{Temp / T6} is the third peripheral point the temperature of (SP3), Factor _{Temp / T7} is a temperature of the fourth peripheral point _{(SP4), Factor Temp / (} T4-T1) is a first temperature _{difference, Factor Temp / (T7-T3} ) of the second temperature difference is , Factor _{Temp / (T5-T2)} is the third temperature difference, and Factor _{Temp / (T6-T2)} is the fourth temperature difference.

At this time, the friction coefficient calculating unit 1322 does not reflect the temperature at the point that is not related to the friction coefficient compensation when calculating the temperature change result value.

For example, when calculating the temperature change result value, the friction coefficient calculating unit 1322 calculates the friction coefficient at the first center point CP1 and the first peripheral point SP1 in the first clutch 111, It is determined that the temperature of the Factor _Temp related to the temperature of the first center point CP1 and the first surrounding point SP1 is set to < 1 > and is not reflected in the temperature change result value.

Then, the friction coefficient calculating unit 1322 calculates a friction coefficient corresponding to the temperature change result value.

That is, the friction coefficient calculating unit 1322 compares the temperature change result value and the friction characteristic table to calculate the friction coefficient. Here, the friction characteristic table is defined by numerically expressing the friction coefficient corresponding to the temperature change result of each functional part in the clutch system according to the condition change by the condition such as oscillation and speed change, between 0 and 1, It can be an experimental value or can be obtained through software simulation.

When the calculation of the friction coefficient is completed as described above, the friction coefficient calculating section 1322 compensates the friction coefficient to the target torque 500 calculated through the torque calculating section 131 as shown in Fig. 5A, And calculates the operating torque 510.

That is, the friction coefficient calculating section 1322 divides the target torque 500 by the friction coefficient to calculate the final operating torque 510 as shown in equation (2).

&Quot; (2) &quot;

Tq _{target / comp} = Tq _target / Factor _friction

Here, Tq _{target / comp} is the final operating torque, Tq _target is the target torque, and Factor _friction is the friction coefficient.

Then, the friction coefficient calculating section 1322 notifies the stroke calculating section 133 that the final operating torque has been calculated.

3 and 5, the stroke calculating section 133 receives the final operating torque from the friction coefficient calculating section 1322. [ The stroke calculating section 133 calculates the target stroke corresponding to the final operating torque based on the clutch curve 520 as shown in FIG. 5 (B).

Here, the clutch curve can be formed in the form of a curve, and is defined as a relationship between the target torque and the target torque that can be transferred at a maximum. At this time, the x-axis represents the stroke and the y-axis represents the torque.

Thus, the stroke calculating section 133 can calculate the target stroke corresponding to the final operating torque on the basis of the relationship defined by the clutch curve 520. [

Hereinafter, an operation flow for compensating friction based on the temperature change of the clutch performed in the clutch control apparatus according to the embodiment of the present invention will be described in detail with reference to FIG. Hereinafter, for convenience of description, reference will be made to the reference numerals mentioned in FIGS. 1 to 5 described above.

6, the torque calculation section 131 of the clutch control apparatus 130 according to the embodiment of the present invention calculates the torque of the first clutch 111 and the second clutch 112 in the DCT 110 (S100). The torque calculating section 131 notifies the torque managing section 132 that the target torque has been calculated.

The torque managing unit 132 predicts the clutch characteristic according to the temperature change of the clutch at the torque calculating time, which is the stage before the target stroke is calculated, to compensate the friction.

That is, the torque managing unit 132 compensates the friction coefficient according to the temperature change of the clutch to the target torque to calculate the final operating torque.

Hereinafter, the process of calculating the final operating torque by the torque managing unit 132 will be described in more detail.

First, the torque managing unit 132 calculates the temperatures of the center point and the peripheral points of the first clutch 111, the second clutch 112 and the engine input shaft 113 using the clutch temperature prediction model as shown in Fig. 4 (S110).

More specifically, the torque managing unit 132 predicts the temperature of the first center point CP1 in the first clutch 111 by using the clutch temperature predicting model. The torque managing unit 132 predicts the temperature of any first peripheral point SP1 at which friction with the engine input shaft 113 in the first clutch 111 occurs.

Similarly, the torque managing unit 132 predicts the temperature of the second center point CP2 in the second clutch 112 by using the clutch temperature predicting model. The torque management section 132 also predicts the temperature of the arbitrary second peripheral point SP2 where friction with the engine input shaft 113 in the second clutch 112 occurs.

Similarly, the torque managing unit 132 predicts the temperature of the third center point CP3 in the engine input shaft 113 using the clutch temperature predicting model. The torque managing section 132 predicts the temperature of the arbitrary third peripheral point SP3 at which friction with the first clutch 111 in the engine input shaft 113 occurs. Further, the torque management section 132 predicts the temperature of any fourth peripheral point SP4 at which friction with the second clutch 112 occurs.

Thereafter, the torque managing unit 132 calculates the friction coefficient using the temperature prediction results for the first clutch 111, the second clutch 112, and the engine input shaft 113, respectively.

That is, the torque managing section 132 calculates the temperature difference between the center point of at least one of the first clutch 111, the second clutch 112 and the engine input shaft 113, the temperature of the surrounding point, To calculate a friction coefficient (S120).

More specifically, the torque management unit 132 detects the temperatures of the first center point CP1 and the first peripheral point SP1 in the first clutch 111 from the temperature prediction result. The torque management unit 132 detects the temperatures of the second center point CP2 and the second peripheral point SP2 in the second clutch 112 from the temperature prediction result. The torque management unit 132 detects the temperatures of the third center point CP3, the third peripheral point SP3 and the fourth peripheral point SP4 in the engine input shaft 113 from the temperature prediction result.

Next, the torque managing section 132 calculates the temperature difference between the center point and the peripheral points of the first clutch 111, the second clutch 112, and the engine input shaft 113, respectively.

That is, the torque managing unit 132 calculates the first temperature difference by subtracting the temperature of the first center point CP1 from the temperature of the first surrounding point SP1. The torque managing unit 132 calculates the second temperature difference by subtracting the temperature of the second center point CP2 from the temperature of the second surrounding point SP2. The torque managing unit 132 calculates the third temperature difference by subtracting the temperature of the third center point CP3 from the temperature of the third surrounding point SP3. The torque managing unit 132 calculates the fourth temperature difference by subtracting the temperature of the third center point CP3 from the temperature of the fourth peripheral point SP4.

Thereafter, the torque managing unit 132 calculates at least one of the temperatures of the first to third center points CP1 to CP3, the temperatures of the first to fourth peripheral points SP1 to SP4, and the first to fourth temperature differences, To calculate a temperature change result value (see Equation 1).

At this time, when calculating the temperature change result value, the torque managing unit 132 does not reflect the temperature at the point not related to the friction coefficient compensation.

For example, at the time of calculating the temperature change result value, the torque managing unit 132 determines that the temperature of the first center point CP1 and the first peripheral point SP1 in the first clutch 111 is not related to the calculation of the friction coefficient The temperature of the Factor _Temp related to the temperature of the first center point CP1 and the first surrounding point SP1 is set to < 1 > so that it is not reflected in the temperature change result value.

Then, the torque managing unit 132 compares the result of temperature change with the friction characteristic table to calculate the friction coefficient.

When the calculation of the friction coefficient is completed as described above, the torque managing unit 132 compensates the friction coefficient to the target torque 500 calculated through the torque calculating unit 131 as shown in Fig. 5A, (Step S130).

That is, the torque managing unit 132 divides the target torque 500 by the coefficient of friction to calculate the final operating torque 510 (see Equation 2).

Thereafter, the torque managing unit 132 notifies the stroke calculating unit 133 that the final operating torque has been calculated.

The stroke calculating section 133 calculates the target stroke corresponding to the final operating torque based on the clutch curve 520 as shown in FIG. 5 (B).

That is, the stroke calculating section 133 calculates the target stroke corresponding to the final operating torque based on the relationship defined by the clutch curve 520 (S140).

As described above, according to the present invention, the clutch characteristic is easily predicted based on the temperature change of the clutch and the friction is compensated, so that the troublesome process of compensating the friction through the following method such as clutch learning can be shortened. That is, the clutch characteristic according to the temperature change of the clutch is predicted at the torque calculation time, which is the stage before the target stroke is calculated, and the friction performance is predicted in advance, so that the running performance can be improved as compared with the following method.

In addition, according to the present invention, only the average temperature of the conventional clutch is compared with the average temperature of the clutch as the friction is compensated by considering the temperature of the center point, the temperature of the peripheral point, and the temperature difference between the center point and the peripheral point, It is possible to calculate the friction coefficient by reflecting the clutch characteristic predicted in a more precise unit than that in which the friction is compensated by the friction coefficient. Therefore, the clutch system can be stably controlled even if the clutch characteristic is rapidly changed.

As noted above, the functional operations and subject matter implementations described herein may be implemented in digital electronic circuitry, or may be implemented in computer software, firmware, or hardware, including the structures disclosed herein and structural equivalents thereof, And combinations of one or more of these. Implementations of the subject matter described herein may be implemented as one or more computer program products, i. E. One or more modules relating to computer program instructions encoded on a type of program storage medium for execution by, or control of, the operation of the processing system Can be implemented.

The computer-readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter that affects the machine readable propagation type signal, or a combination of one or more of the foregoing.

As used herein, the term " system "or" device "encompasses all apparatus, apparatus, and machines for processing data, including, for example, a programmable processor, a computer or a multiprocessor or computer. The processing system may, in addition to the hardware, comprise code that forms an execution environment for a computer program upon request, such as, for example, code comprising a processor firmware, a protocol stack, a database management system, an operating system, .

A computer program (also known as a program, software, software application, script or code) may be written in any form of programming language, including compiled or interpreted language, a priori or procedural language, Components, subroutines, or other units suitable for use in a computer environment. A computer program does not necessarily correspond to a file in the file system. The program may be stored in a single file provided to the requested program, or in multiple interactive files (e.g., a file storing one or more modules, subprograms, or portions of code) (E.g., one or more scripts stored in a markup language document). A computer program may be deployed to run on multiple computers or on one computer, located on a single site or distributed across multiple sites and interconnected by a communications network.

On the other hand, computer readable media suitable for storing computer program instructions and data include semiconductor memory devices such as, for example, EPROM, EEPROM and flash memory devices, such as magnetic disks such as internal hard disks or external disks, Non-volatile memory, media and memory devices, including ROM and DVD-ROM disks. The processor and memory may be supplemented by, or incorporated in, special purpose logic circuits.

Implementations of the subject matter described herein may include, for example, a back-end component such as a data server, or may include a middleware component, such as an application server, or may be a web browser or a graphical user, for example a user, who may interact with an implementation of the subject- Front-end components such as client computers with interfaces, or any combination of one or more of such back-end, middleware, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication, such as, for example, a communications network.

While the specification contains a number of specific implementation details, it should be understood that they are not to be construed as limitations on the scope of any invention or claim, but rather on the description of features that may be specific to a particular embodiment of a particular invention Should be understood. Likewise, the specific features described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented in multiple embodiments, either individually or in any suitable subcombination. Further, although the features may operate in a particular combination and may be initially described as so claimed, one or more features from the claimed combination may in some cases be excluded from the combination, Or a variant of a subcombination.

It is also to be understood that although the present invention is described herein with particular sequence of operations in the drawings, it is to be understood that it is to be understood that it is to be understood that all such illustrated acts have to be performed or that such acts must be performed in their particular order or sequential order, Can not be done. In certain cases, multitasking and parallel processing may be advantageous. Also, the separation of the various system components of the above-described embodiments should not be understood as requiring such separation in all embodiments, and the described program components and systems will generally be integrated together into a single software product or packaged into multiple software products It should be understood that

As such, the present specification is not intended to limit the invention to the specific terminology presented. Thus, while the present invention has been described in detail with reference to the above examples, those skilled in the art will be able to make adaptations, modifications, and variations on these examples without departing from the scope of the present invention. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: clutch system 110: DCT (Dual Clutch Transmission)
120: engine 130: clutch control device
131: torque calculating section 132: torque managing section
1321: Prediction unit 1322: Friction coefficient calculation unit
1323: Compensation unit 133: Stroke calculation unit

Claims (15)

A torque calculating section for determining a target torque for operation of the clutch; And
And a torque control unit for compensating for the target torque in consideration of the friction of the clutch according to the temperature change of the clutch,
And a clutch control device for controlling the clutch. The method according to claim 1,
Wherein said clutch comprises a first clutch and a second clutch disposed about an engine input shaft for connection with an engine. 3. The method of claim 2,
The torque management unit,
A temperature predicting unit for predicting a temperature of the engine input shaft, the first clutch and the second clutch;
A friction coefficient calculating unit for calculating a friction coefficient of the clutch using the predicted result; And
And a compensating section that compensates the friction coefficient to the target torque to calculate the final operating torque. The method of claim 3,
The temperature predicting unit may include:
Estimating a temperature of a first peripheral point at which friction between the first center point of the first clutch and the engine input shaft occurs,
Predicts a temperature of a second peripheral point at which friction between the second center point in the second clutch and the engine input shaft occurs,
The temperature of the third central point in the engine input shaft, the temperature of the third peripheral point at which friction with the first clutch occurs, and the temperature of the fourth peripheral point at which friction with the second clutch occurs And a clutch control device. 5. The method of claim 4,
The friction coefficient calculating unit calculates,
The temperature of the first to third center points, the temperature of the first to fourth surrounding points, the temperature difference between the first surrounding point and the first center point, the temperature difference between the second surrounding point and the second center point, Wherein the friction coefficient is calculated using a result of a combination of at least one of a temperature difference between the third peripheral point and the third central point and a temperature difference between the fourth peripheral point and the third central point by multiplication Clutch control device. 6. The method of claim 5,
Wherein the final operating torque
And the target torque is calculated by dividing the target torque by the friction coefficient. The method according to claim 6,
Further comprising a stroke calculating section for calculating a target stroke corresponding to said final operating torque. Determining a target torque for operation of the clutch; And
Compensating the target torque in consideration of the friction of the clutch according to the temperature change of the clutch
And a clutch control device for controlling the clutch. 9. The method of claim 8,
Wherein the clutch comprises a first clutch and a second clutch disposed about an engine input shaft for connection with the engine. 10. The method of claim 9,
The step of compensating for the target torque comprises:
Predicting a temperature of the engine input shaft, the first clutch and the second clutch;
Calculating a friction coefficient of the clutch using the predicted result; And
And calculating the final operating torque by compensating the friction coefficient to the target torque. 11. The method of claim 10,
The step of predicting the temperature comprises:
Estimating a temperature of a first peripheral point at which friction between the first center point of the first clutch and the engine input shaft occurs,
Predicting a temperature of a second peripheral point at which friction between the second center point in the second clutch and the engine input shaft occurs, and
Predicting a temperature of a third center point in the engine input shaft, a temperature of a third peripheral point at which friction with the first clutch occurs, and a fourth peripheral point at which friction with the second clutch occurs, And a clutch control device for controlling the clutch. 12. The method of claim 11,
The step of calculating the friction coefficient may include:
The temperature of the first to third center points, the temperature of the first to fourth surrounding points, the temperature difference between the first surrounding point and the first center point, the temperature difference between the second surrounding point and the second center point, Calculating a temperature change result value by combining at least one of a temperature difference between the third peripheral point and the third central point and a temperature difference between the fourth peripheral point and the third central point by multiplication; And
And calculating a friction coefficient corresponding to the temperature change result value. 13. The method of claim 12,
Wherein the final operating torque
And the target torque is calculated by dividing the target torque by the friction coefficient. 14. The method of claim 13,
And calculating a target stroke corresponding to the final operating torque. 15. A computer program stored on a medium for executing each step of the method of any one of claims 8 to 14.

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