EPS periodic road excitation compensation method and system and vehicle
A compensation method and compensation system technology, applied in electric steering mechanism and other directions, can solve problems such as torque signal noise interference, and achieve the effect of reducing jitter and improving driving safety.
Active Publication Date: 2022-04-08
智新科技股份有限公司
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Problems solved by technology
[0003]However, during the driving process of the vehicle, due to the vibration, jitter and other forms of interference caused by the rigid body motion of the vehicle, and other forms of interference such as uneven road surface, the torque sensor of the vehicle steering wheel collects The torque signal has periodic noise interference, which causes the steering wheel to rotate periodically in a certain direction
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[0040] Reference will now be made in detail to specific embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in conjunction with specific embodiments, it will be understood that it is not intended to limit the invention to the described embodiments. On the contrary, it is intended to cover alterations, modifications and equivalents as included within the spirit and scope of the invention as defined by the appended claims. It should be noted that the method steps described here can all be realized by any functional block or functional arrangement, and any functional block or functional arrangement can be realized as a physical entity or a logical entity, or a combination of both.
[0041] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embo...
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The invention discloses an EPS periodic road excitation compensation method and system and a vehicle, and relates to the technical field of vehicle electronic power steering systems. The torque sensor collects original signal data representing the torque of the steering wheel; the vehicle processor extracts noise frequency caused by road excitation; the self-adaptive notch filter compensates and suppresses noise with specific frequency to obtain corrected signal data; the EPS system controls the steering wheel based on the correction signal data. Original signal data with road surface excitation noise are collected through a torque sensor, the periodic noise frequency of the noise caused by road surface excitation is extracted through a vehicle processor, the noise with the specific frequency is suppressed through an adaptive notch filter, and corrected signal data are obtained. And the EPS system controls the steering wheel based on the correction signal data, so that the purposes of weakening the shaking of the steering wheel and improving the driving safety are achieved.
Description
technical field [0001] The invention relates to the technical field of vehicle electronic power steering systems, in particular to an EPS periodic road surface excitation compensation method, system and vehicle. Background technique [0002] Electric Power Steering (EPS) systems use electric motors that can be directly linked to the steering gear or steering column to reduce the driver's hand effort in steering the vehicle. During vehicle operation, the driver applies force to the steering wheel to control steering of the vehicle. This results in "driver torque" being applied to the shaft coupled to the steering wheel. The torque sensor detects the torque applied to the steering column by the driver and transmits this information to the electronic control unit. The electronic control unit generates control signals that are applied to the electric motors, causing the electric motors to produce "electronic assist" combined with manual torque from the steering wheel. This co...
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Inventor 周健王超王思山周鹏张昊宇李锋张兴旺蒋鹏凯宋昊江孙玉春
Owner 智新科技股份有限公司