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Metal belt drive reliability compensation control device and control method of continuously variable transmission

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

Active Publication Date: 2017-04-26
XIANGTAN UNIV
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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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  • Metal belt drive reliability compensation control device and control method of continuously variable transmission
  • Metal belt drive reliability compensation control device and control method of continuously variable transmission
  • Metal belt drive reliability compensation control device and control method of continuously variable transmission

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Embodiment Construction

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

[0025] Such as figure 1 As shown, a metal belt transmission reliability compensation control device for a continuously variable transmission, including a driving wheel 1, a driven wheel 2, a metal belt 3, an oil pump 11, a speed ratio control proportional overflow 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 connected 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 inputs A first torque sensor 8 is provided on the shaft, a second speed sensor 7 is provided on the driven wheel 2, a second torque sensor 4 is provided on the output shaft of the driven wheel 2, and the inlet of the oil pump 11 passes through a filter 10 Afterwards, it is connected ...

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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 transmission reliability compensation control device for a metal belt of a continuously variable transmission and a control method thereof. Background technique [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. Therefore, it is necessary to propose a time-varying reliability compensation control strategy for metal belt sliding friction transmission to improve the reliability of metal belt sliding friction transmission. Contents of the invention [0003] In ord...

Claims

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Application Information

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IPC IPC(8): F16H61/662
CPCF16H61/66272F16H2061/6604
Inventor 刘金刚匡增彧范坚
Owner XIANGTAN UNIV
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