Brake-by-wire system with backup function and control method thereof

Abstract

The invention discloses a brake-by-wire system with a backup function and a control method thereof. The brake-by-wire system comprises a brake control mechanism, an active brake pedal travel simulator, a main energy supply device and a hydraulic adjusting unit. A first cavity liquid outlet A, a second cavity liquid outlet B and a third cavity liquid inlet C of a brake master cylinder in the brakecontrol mechanism are connected with a liquid inlet D, a liquid inlet E and a liquid outlet F of an active brake pedal travel simulator through pipelines respectively. A liquid outlet G and a liquid outlet H of the active brake pedal travel simulator are connected with a liquid inlet M and a liquid inlet L of the hydraulic adjusting unit through pipelines respectively, and a liquid outlet I and aliquid outlet J of the main energy supply device are connected with a liquid inlet M and a liquid inlet L of the hydraulic adjusting unit through pipelines respectively. A liquid inlet K of the main energy supply device and a liquid outlet R of the hydraulic adjusting unit are both connected with a liquid outlet d of a liquid storage tank in the brake control mechanism through pipelines. The invention further provides a control method of the brake-by-wire system with a backup function.

Description

technical field [0001] The invention relates to a brake-by-wire system applied in the field of automobile braking systems, more specifically, the invention relates to a brake-by-wire system with a backup function and a control method thereof. Background technique [0002] In recent years, with the advancement of artificial intelligence technology, it has become possible to use machines to replace humans to complete driving tasks. Unmanned vehicles are bound to become one of the development trends of future automotive technology, and intelligent driving systems will eventually replace humans to drive cars. . The emergence of the intelligent driving system has put forward new and higher requirements for the braking system. The newly introduced intelligent driving function requires that the braking system can realize the brake-by-wire through commands, and the braking system must ensure high availability. All key functions, including brake-by-wire, are redundant and are no lon...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the performance requirements of the existing technology for the brake-by-wire brake system beyond the capabilities of the existing products, and the structure is complex, the control is difficult, the braking capacity of the redundant backup system is limited, and the pedal feel The problem of inconsistency with conventional vehicles, providing a brake-by-wire system with backup function and its control method

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