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公开(公告)号：US10053143B2
公开(公告)日：2018-08-21
申请号：US15345047
申请日：2016-11-07
摘要： A controller for a power steering system estimates rack force and its derivative, such as based on lateral acceleration, yaw rate, vehicle speed, or other parameters. A control torque is calculated based on the rack force, its derivative, and the vehicle speed and is summed with an input torque from the driver to determine an amount of assist torque to provide. The control torque may be a shape function that has a sign determined by the sign of the derivative and a magnitude that decreases from a maximal value with increase in the magnitude of the rack force. The maximal value may be determined according to vehicle speed.
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公开(公告)号：US20180127021A1
公开(公告)日：2018-05-10
申请号：US15345047
申请日：2016-11-07
发明人： Dexin Wang , Timothy Gerard Offerle , Doug Scott Rhode , Taehyun Shim , Yijun Li
摘要： A controller for a power steering system estimates rack force and its derivative, such as based on lateral acceleration, yaw rate, vehicle speed, or other parameters. A control torque is calculated based on the rack force, its derivative, and the vehicle speed and is summed with an input torque from the driver to determine an amount of assist torque to provide. The control torque may be a shape function that has a sign determined by the sign of the derivative and a magnitude that decreases from a maximal value with increase in the magnitude of the rack force. The maximal value may be determined according to vehicle speed.
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公开(公告)号：US20230266724A1
公开(公告)日：2023-08-24
申请号：US17675149
申请日：2022-02-18
发明人： Lodewijk Wijffels , Joshua Guerra , Taehyun Shim , Yijun Li
IPC分类号： G05B13/04
CPC分类号： G05B13/042
摘要： Upon determining calibration parameters for a single-loop controller that minimize a difference between an input to the single-loop controller and a response from the single-loop controller, calibration parameters for a cascade controller are determined based on the determined calibration parameters for the single-loop controller. The cascade controller includes a secondary controller and a primary controller. The calibration parameters for the cascade controller are provided to a second computer in a vehicle.
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