Pedal lever ratio adjustment control method and control system

Abstract

The invention provides a pedal lever ratio adjusting control method and system. The control method includes the following steps: powering a vehicle on; starting a lever ratio adjusting function; collecting and judging whether speed information and shift information accord with requirements; driving a pivot shaft of a pedal arm to slide if the speed information and the shift information accord withthe requirements; changing the position of the pivot shaft corresponding to a vehicle body; keeping the position of a pedal corresponding to the vehicle body unchanged; and adjusting the lever ratioof the pedal. The control method can adjust the lever ratio of the pedal and keep the position of the pedal corresponding to the vehicle body unchanged, so that the time-consuming and labor-consumingdeficiencies of manually adjusting can be overcome, matching time can be saved, and optimal pedal feelings can be realized; and the control method is suitable for adjusting with the individual difference of drivers, so that the method is good in universality, and can effectively guarantee the driving safety of the drivers.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a pedal lever ratio adjustment control method and a pedal lever ratio adjustment control system based on the pedal lever ratio adjustment control method. Background technique [0002] In the field of automobile chassis parts manufacturing technology, the brake pedal is used for deceleration and parking, and the frequency of use is very high. Its performance directly affects the driving safety of the car. The braking of the car is realized by stepping on the brake pedal, and the pedal produces a certain reaction force on the foot at the same time. With the improvement of driving comfort requirements, the requirements for brake pedal feel are also continuously improved when braking. In the prior art, the lever ratio of the brake pedal is mostly non-adjustable structure, and the position of the pedal will change when the lever ratio is adjusted for a small number of brake pedal...

AI Technical Summary

Problems solved by technology

In the prior art, the lever ratio of the brake pedal is mostly non-adjustable structure, and the position of the pedal will change when the lever ratio is adjusted for a small number of brake pedals with adjustable lever ratio, and manual adjustment is required. The adjustment process is time-consuming and laborious. Among them, the lever ratio is the ratio of the distance from the rotation axis of the brake pedal arm to the shift fork and the distance from the rotation axis of the brake pedal arm to the brake pedal. There are many technical problems in the above structure:

[0003] (1) The lever ratio of the brake pedal cannot be adjusted. During the braking performance matching test, the pedal feel needs to be evaluated. If the pedal feel is poor, it is necessary to replace the pedal with a different lever ratio and try again, which wastes matching time. Without optimal pedal feel

[0004] (2) The lever ratio of the brake pedal is not adjustable. If the pedal feels poor, the pedal needs to be replaced again. It cannot be adjusted according to individual differences of different drivers, and the universal performance is poor.

[0005] (3) The lever ratio of the brake pedal can be adjusted. Since the position of the brake pedal changes, and the height of the brake pedal and the height of the accelerator pedal are required to be checked by man-machine in the design of the car, the lever ratio can be adjusted. Changing the position of the brake pedal will affect people's driving safety

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