An Automobile Brake-by-Wire Pedal Simulator Based on Electromagnetic Regulation

Abstract

The invention discloses an automobile brake-by-wire pedal simulator based on electromagnetic adjustment, which comprises: a brake pedal, a brake pedal pressure sensor, a push rod, a brake pedal displacement sensor, a first hydraulic chamber, an I-shaped sealing ring, a first Two hydraulic chambers, type II sealing rings, high-pressure air chambers, nitrogen, floating pistons, oil, liquid outlets, cover plates, return springs, magnetostrictive blocks, electromagnetic coils, coil fixing brackets, hydraulic cylinders, pistons, activities Groove, electronic control unit; the present invention adopts floating piston and high-pressure air chamber structure, so that when stepping on the brake pedal, it can effectively reduce the high-frequency vibration generated by stepping on the pedal, and help to eliminate noise, ensuring Unpleasant vibrations are not transmitted to the brake pedal.

Description

technical field [0001] The invention belongs to the technical field of automobile braking systems, in particular to an automobile brake-by-wire pedal simulator based on electromagnetic regulation. Background technique [0002] With the development of automobile technology, "intelligence, networking and electrification" is the development direction of future automobiles, and the brake-by-wire system is the key technology to realize the intelligentization of automobiles; compared with the traditional braking system, the size of the brake-by-wire system It is small and flexible in assembly, which can reduce the difficulty of chassis design and layout, make the layout of the whole vehicle more convenient, and facilitate the realization of the modular design of the automobile chassis. [0003] The brake-by-wire system replaces the original mechanical connections and hydraulic pipelines with electronic circuits. It has the characteristics of flexible layout, good braking performan...

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Problems solved by technology

[0008] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide an automobile brake-by-wire pedal simulator based on electromagnetic regulation, so as to solve the problem that the prior art cannot realize accurate simulation of the pedal feel, and it is difficult to adjust and control the pedal feel. The problem that the vibration generated when moving is transmitted to the brake pedal; the present invention simulates the pedal feeling by compressing the oil in the hydraulic chamber through the liquid outlet to generate frictional resistance, thereby realizing the accurate simulation of the brake pedal feel; controlled by the electronic control unit The size of the electromagnetic coil is energized to generate magnetic fields of different strengths, change the length of the magnetostrictive material, and then adjust the opening size of the liquid outlet to adjust the friction resistance of the oil passing through the liquid outlet, and realize the adjustment of the feeling of the brake pedal; The engine adopts a structure combining a floating piston and a high-pressure air chamber. During the braking process, the movement of the floating piston and the compression of the high-pressure gas can effectively reduce the high-frequency vibration generated by stepping on the brake pedal, and help to eliminate noise, ensuring that vibrations generated during braking by wire are not transmitted to the brake pedal

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