Reinforcement type drive-by-wire brake

Abstract

The invention relates to a reinforcement type drive-by-wire brake. The reinforcement type drive-by-wire brake adopts a modular design and comprises a brake disc, a left friction plate, a right friction plate, calipers, a cylinder body, an electromagnetic coil assembly, a magnetostrictive rod, an adjusting bolt, a wedge block, a piston and a rubber ring, wherein the electromagnetic coil assembly and the magnetostrictive rod form a magnetostrictive actuator, when a vehicle is braked, a vehicle controller controls the magnitude of current in an electromagnetic coil to change the intensity of a magnetic field, then the extension length of the magnetostriction rod is controlled, when the magnetostriction rod extends, the wedge block is pushed to move forwards, the wedge face on the wedge block presses and pushes the piston to move, the piston presses the right friction plate, and braking torque is generated under the combined action of the left friction plate and the right friction plate. According to the reinforcement type drive-by-wire brake, the magnetostrictive actuator is adopted as a power source of the brake, a wedge type force amplifier is combined, higher response frequency and control precision are achieved, the braking distance can be effectively shortened, and the vehicle running safety is improved.

Description

technical field [0001] The invention relates to the field of automobile brakes, in particular to a booster type wire-controlled brake. Background technique [0002] Brake-by-wire technology is a new type of braking technology that has emerged in recent years. It does not rely on mechanical or hydraulic connections between the brake and the brake pedal. It uses wires to replace part or all of the brake pipelines, and controls the electronic control through the controller. The components are used to control the braking force and realize the stable and reliable braking control of the car. At present, the brake-by-wire system mainly includes two types: electro-hydraulic brake system (EHB) and electro-mechanical brake system (EMB). The brake-by-wire system is conducive to the optimization of the braking performance of the whole vehicle, and can be easily integrated with other electronic control systems such as ABS, ASR, ESP, etc., so it has a broad development space. Especially...

AI Technical Summary

Problems solved by technology

In order to ensure sufficient braking torque, the main technical solution currently adopted is the motor acceleration and deceleration mechanism, but the deceleration mechanism will cause slow braking response and increase the braking distance of the vehicle

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