A method for enhancing auxiliary road sense based on position difference signal

By introducing an auxiliary road sense enhancement method based on position difference signals in the online control steering system, the problem of poor reproduction ability of high-frequency road sense signals in the prior art is solved, and more realistic road sense feedback and better road surface reaction effects are achieved.

CN118665585BActive Publication Date: 2025-03-28YUBEI XINXIANG POWER STEERING SYST
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Patent Information

Application Number
CN202411144699.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-20
Publication Date
2025-03-28
Estimated Expiration
2044-08-20

AI Technical Summary

Technical Problem

The existing wire-controlled steering system is difficult to achieve rapid reproduction when simulating high-frequency road sensing signals, resulting in drivers being unable to feel the real road sensing, especially on uneven roads.

Method used

By introducing an auxiliary road sense enhancement method based on position difference signal in the road sense simulation system, the position change signal is monitored by linking the wheel and the transmission in the steering actuator, and the auxiliary road sense compensation current is calculated to enhance the feedback of the high-frequency road sense signal.

Benefits of technology

It realizes the rapid and complete reproduction of high-frequency road sense signals, improves the response effect of the line-controlled steering system to road changes, and allows drivers to feel more realistic and detailed road sense changes.

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Abstract

An auxiliary road feel enhancement method based on a position difference signal comprises the following steps: obtaining a rotational position signal of an input shaft in a road feel simulation mechanism through a first position sensor and recording it as a first position signal, obtaining a rotational position signal of a hand gear in a steering actuator through a second position sensor and recording it as a second position signal; obtaining a position difference signal between the first position signal and the second position signal; obtaining a signal Y of a specific frequency band in the position difference signal; and obtaining an auxiliary road feel compensation current according to the signal of the specific frequency band in the position difference signal. The present invention is simple to calculate, can be realized by relying on the existing hardware of a wire-controlled steering system, and has low cost.
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