A start adaptive control method based on amt automatic transmission
A technology of automatic transmission and control method, which is applied in transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as short clutch life, achieve the effect of solving short life and improving system reliability
Active Publication Date: 2018-05-08
WUHAN HEKANG POWER TECH CO LTD
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Problems solved by technology
[0007] The invention provides a control method based on the self-adaptive semi-slip friction point of the AMT automatic transmission. The technical problem to be solved is the short service life of the clutch. In addition, the adaptability of the AMT to different road surfaces should be solved to achieve a fast and stable start. functions to improve system reliability
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[0050] The principles of the present invention will be described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0051] Such as figure 1 As shown, it is the principle diagram of the technical solution of the present invention. By calculating the engine speed change rate, the difference between the main and slave shaft speeds, the speed change rate of the accelerator pedal, and collecting the engine speed, the actual position of the clutch, the position of the throttle, the time from the start of the clutch to the time when the clutch is closed, the clutch Target position, clutch engagement rate, clutch half-slip point position, so as to continuously adjust the current clutch half-slip point until the clutch stays at the half-slip position for a fixed period of time, the engine speed fluctuates steadily, and the vehicle speed rises at a ...
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The invention provides an adaptive semi-slip friction point control method based on the AMT automatic transmission of a bus, by calculating the engine speed change rate, the difference between the master and slave shaft speed, the speed change rate of the accelerator pedal, and collecting the engine speed, the actual position of the clutch, and the throttle position , Set time from clutch start to close, clutch target position, clutch engagement rate, clutch half-slip point position, so as to continuously adjust the current clutch half-slip point until it meets the requirements of fast and smooth start. The self-adaptive clutch semi-slip point start control of the present invention not only solves the problem of short clutch life by accumulating a large amount of data, but also realizes a fast and stable start function and greatly improves system reliability. The invention is suitable for the starting control of an AMT automatic transmission system.
Description
technical field [0001] The invention relates to the field of AMT control of mechanical automatic transmissions, in particular to an adaptive control method for AMT automatic transmissions of buses. Background technique [0002] AMT products are products that realize automatic shifting by adding an automatic shifting mechanism to the traditional manual gearbox. The main components are electronically controlled mechanical shifting mechanism, electronically controlled clutch mechanism, TCU and shifting operation panel. The TCU collects vehicle status information for data analysis and control, and finally realizes the driver's driving intention. [0003] Compared with manual shift vehicles, the main advantage of AMT is that it greatly reduces the driver's operating intensity, and in the automatic shift type, AMT is the cheapest and easiest solution, so, when conditions permit, AMT is given priority scheme. In recent years, the number of vehicles with automatic gear shifting sy...
Claims
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IPC IPC(8): F16H61/26
CPCF16H61/26F16H2342/04F16H2342/042
Inventor 高慧李明哲李德鹏刘文洲
Owner WUHAN HEKANG POWER TECH CO LTD