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Continuously variable transmission metal belt drive reliability compensation control device and control method

A continuously variable transmission, compensation control technology, applied in transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as sudden slippage, ablation, etc., to achieve the effect of metal belt transmission efficiency

Active Publication Date: 2018-05-22
XIANGTAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The basic structure of a continuously variable transmission is mainly composed of a driving wheel, a driven wheel and a metal belt. The power is transmitted from the driving wheel to the driven wheel through friction transmission. There is a certain relative sliding, and in the process of sliding friction transmission of the metal belt, there is a high pair of contact between the metal belt and the pulley, and there will be hidden dangers such as sudden slipping and ablation during the transmission process

Method used

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  • Continuously variable transmission metal belt drive reliability compensation control device and control method
  • Continuously variable transmission metal belt drive reliability compensation control device and control method
  • Continuously variable transmission metal belt drive reliability compensation control device and control method

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Embodiment Construction

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] like figure 1 As shown, a CVT metal belt transmission reliability compensation control device includes a driving wheel 1, a driven wheel 2, a metal belt 3, an oil pump 11, a speed ratio control proportional relief valve 13, and a clamping force control proportional pressure reducing valve. 12. Output speed control proportional relief valve 14 and control unit, the metal belt 3 is bridged between the driving wheel 1 and the driven wheel 2, the driving wheel 1 is provided with a first speed sensor 6, and the driving wheel 1 input The shaft is provided with a first torque sensor 8, the driven wheel 2 is provided with a second rotational speed sensor 7, the output shaft of the driven wheel 2 is provided with a second torque sensor 4, and the inlet of the oil pump 11 passes through a filter 10. It is then connected to the oil tank 9. The outlet of the ...

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Abstract

The invention discloses a metal belt drive reliability compensation control method of a continuously variable transmission. The method comprises the following steps: 1, measuring an input torque, an output torque, an input rotating speed, an output rotating speed, a driving wheel pitch radius and a driven wheel pitch radius of the continuously variable transmission; 2, detecting whether a metal belt enters a slip drive state; 3, calculating the slip rate; 4, calculating a value of a structural performance function; 5, judging whether the value of the structural performance function is less than 0, if the value of the structural performance function is less than 0, decreasing the speed ratio, the clamping force and the output torque of the continuously variable transmission, and returning to step 1; 6, detecting whether a ratio of the output torque to the input torque is less than 90 percent, if the ratio of the output torque to the input torque is less than 90 percent, controlling the size of the input torque, and returning to step 1; and 7, ending the procedure. According to the metal belt drive reliability compensation control method of the continuously variable transmission, by the adjustment of sizes of all input parameters, compensation control of the reliability of the metal belt under a slipping state is realized; and control of the drive efficiency of the metal belt can be also realized by adjusting the ratio of the output torque to the input torque.

Description

technical field [0001] The invention relates to a control device for compensating the reliability of a metal belt of a continuously variable transmission and a control method thereof. Background technique [0002] The basic structure of the continuously variable transmission is mainly composed of a driving wheel, a driven wheel and a metal belt. The power is transmitted from the driving wheel to the driven wheel in the form of frictional transmission. There is a certain relative sliding, and in the process of sliding friction transmission of the metal belt, there is a high contact between the metal belt and the pulley, and there will be hidden dangers such as sudden slippage and ablation during the transmission process. Therefore, it is necessary to propose a time-varying reliability compensation control strategy for the metal belt sliding friction transmission to improve the reliability of the metal belt sliding friction transmission. SUMMARY OF THE INVENTION [0003] In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/662
CPCF16H61/66272F16H2061/6604
Inventor 刘金刚匡增彧范坚
Owner XIANGTAN UNIV
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