Digital antilock braking system

Abstract

The invention relates to a brake system used in automobile and motorcycle. It is adjusted the braking force in the form of pulse-width modulation. The bias force device is adopted to realize modulated in bigger range with smaller braking force. This make the modulation be easy to realize. The difficulty of controlling the controlling force is reduced by adopting the method of force adding-position-force changing. The active digital braking and the passive digital are connected tightly with each other by adopting the technique of bias force reversing, assistant braking oil cylinder, oil-way switching, so that the control and the adjust of the braking force are changed at his pressure. Compared with the simulation ABS system, the invention can simplify the structure of the brake, reduce the precision of the machining, and save the cost. As well as, it can adopt more advanced intelligent control method to improve the braking performance. Based on this, it can be more conveniently to realize the high-level control, such as ASR, front-back braking force dynamic distribution, left-right braking force balance control, and so on, and make the safety of the braking be improved to a new level.

Description

Technical field [0001] The invention relates to a control device for stopping and rotating a moving and rotating object, especially a device for braking and anti-locking the wheels of automobiles and motorcycles. Background technique [0002] The braking systems currently in use all work in an analog mode, that is, the braking force and control force are continuously changing, and it is difficult to realize automatic control. There are two types of automatic control systems - anti-lock braking system (ABS) and electronically controlled braking system (EBS). Their common characteristics are: the pressure regulating mechanism works in a simulated state, the force changes continuously, and the structure is complex. Higher machining accuracy is required. [0003] Chinese patent 02122371.8 proposes a modulated anti-lock braking system, and Chinese patent 02141761.x proposes a modulated braking system. The basic principles of these two inventions are pulse width modulation, that ...

AI Technical Summary

Problems solved by technology

[0006] There are several problems here: First, under the condition of large current, it is difficult to quickly switch the current, especially when it is desired to achieve large and small braking forces, it is particularly difficult to quickly switch between two large currents

The second is that the suction force of the electromagnet has a nonlinear relationship with the position of the iron core, and the suction force is very sensitive to the position of the iron core, which is not stable and difficult to control accurately

The third is that digital braking and digital anti-lock braking are realized separately and cannot be completed in one system

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