Power supply method for automotive electronic power-assisted steering system based on supercapacitor

Abstract

The invention discloses a power supply method for an automotive electronic power-assisted steering system based on a supercapacitor. The system comprises a discharging switch, a supercapacitor module, a charging circuit and a booster circuit; an accumulator has three electric signal outputs; a control signal end of an EPS (Electric Power Storage) control system is respectively bi-directionally communicated with signal ends of an EPS system motor driving module and the supercapacitor module; a control signal output end of the EPS control system is respectively communicated with control signal input ends of the discharging switch, the charging circuit and the booster circuit. Compared with the existing power supply method for a steering system, the power supply method has the advantages that the discharging switch is switched on and the supercapacitor module is connected after the detecting analysis is performed by the EPS control system when the steering is performed under a villainous road condition; the supercapacitor is matched with the accumulator for supplying enough driving current and increasing the assisting power, so that the purpose of improving the assisting effect is achieved; and the driving safety of a driver is effectively ensured.

Description

technical field [0001] The invention relates to the field of automotive electronics, in particular to a supercapacitor-based power supply method for an automotive electronic power steering system. Background technique [0002] For a long time, the power steering system of automobiles generally adopts the hydraulic power steering system. It can be said that after more than ten years of development, the hydraulic steering technology is relatively mature. However, from the perspective of the development trend of the overall steering system, as people With the further improvement of automobile environmental protection, energy saving and safety requirements, EPS electronic power steering is gradually replacing hydraulic power steering system with its many absolute technical advantages. At present, EPS electronic power steering systems generally use battery packs to provide steering power. However, when high-power auxiliary power is required to steer the car, the battery packs are...

AI Technical Summary

Problems solved by technology

At present, EPS electronic power steering systems generally use battery packs to provide steering power. However, when high-power auxiliary power is required to steer the car, the battery packs are powerless, making devices that can provide instantaneous high power used in EPS electronic power steering systems. become inevitable

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