Clutch switching control method for double-clutch transmission
A technology of dual-clutch transmission and control method, which is applied in the direction of transmission control, elements with teeth, gear transmission, etc., can solve problems such as difficulty in modification and optimization, and achieve the effect of simplifying calibration
Active Publication Date: 2013-09-25
CHONGQING TSINGSHAN IND
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Problems solved by technology
For example, a Chinese invention patent with application number 200410005885.0, authorized announcement number CN100434768C, and authorized announcement date of November 19, 2008 discloses a method for controlling a dual-clutch transmission. The method includes a linear target curve. The disadvantage is that it relies on state recognition during transitions from in to out and allows the speed to become linear before closed-loop control is activated
In addition, the Chinese invention patent with the application number 200380109880.6, the authorized announcement number CN100400937C, and the authorized announcement date on July 9, 2008 discloses a shift control method for an automatic dual-clutch gearbox. The physical characteristics of the calculation of the multi-state target, although the determination of the target should be able to get a better result, but it is difficult to modify and optimize in the practice of vehicle calibration
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[0030] In order to facilitate the understanding of the present invention, the mechanical structure, hydraulic system and control system of the dual-clutch transmission in the prior art are explained here.
[0031] Regarding the mechanical composition of the dual-clutch transmission, in addition to referring to the descriptions in the documents pointed out in the background technology, you can also refer to the applicant’s previous application number 200910260370.8, application publication number CN101737462A, and application publication date of June 2010 The Chinese invention patent application on the 16th, see also figure 1 . Such as figure 1 The shown dual-clutch transmission includes two clutches, i.e. a first clutch 11 and a second clutch 12, and also includes an input shaft 110, an odd-numbered countershaft 13, an even-numbered countershaft 14 arranged in parallel with the odd-numbered countershaft 13, The intermediate shaft 15 and the reverse layshaft 16 also include a...
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The invention discloses a clutch switching control method for a double-clutch transmission, relates to a control method for a transmission, and particular relates to a control method for a clutch switching procedure of a double-clutch transmission. The clutch switching control method includes steps of determining target gear speed ratios; determining input torque of a front clutch; detecting an input rotation speed of the front clutch; detecting a target rotation speed of a rear clutch; dividing a detected output rotation speed by the detected input rotation speed to compute a current speed ratio; determining a target speed ratio according to calibration data which are determined by a gear shifting type, a driving gear, the input rotation speed, the input torque and current temperatures of the clutches; computing speed ratio errors; using values of the speed ratio errors as control targets to continuously correct pressures of the clutches and torque requests of an engine according to error grades during closed-loop control so that the actual speed ratio conforms to a target speed ratio curve. The clutch switching control method for the double-clutch transmission has the advantage that calibration is effectively simplified.
Description
technical field [0001] The invention relates to a control method of a transmission, in particular to a control method for a clutch switching process of a dual-clutch transmission. Background technique [0002] The transmission is a very important part of the modern transmission system. In order to improve the efficiency of the transmission system, a lot of research and development work has been carried out recently. With the development of modern control technology, a considerable part of the development work revolves around dual-clutch transmissions. The gears of the dual clutch transmission are similar to those of a normal manual transmission. The gears in each gear set are arranged on their own shafts and can rotate freely around the shafts. There is a synchronizer next to the gears. The synchronizer can selectively mesh with gears of different gears. Dual clutch transmission. For automatic shifting, the shifting of each gear set is accomplished by some kind of actuator...
Claims
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IPC IPC(8): F16H61/04F16H59/36
CPCF16H3/006F16H61/688
Inventor 银联作胡成帅朱高华孙芬路红芳
Owner CHONGQING TSINGSHAN IND