Invention Grant
- Patent Title: Spiral path based three-point turn planning for autonomous driving vehicles
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Application No.: US16099891Application Date: 2018-09-28
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Publication No.: US11267471B2Publication Date: 2022-03-08
- Inventor: Fan Zhu , Lin Ma
- Applicant: Baidu USA LLC
- Applicant Address: US CA Sunnyvale
- Assignee: Baidu USA LLC
- Current Assignee: Baidu USA LLC
- Current Assignee Address: US CA Sunnyvale
- Agency: Womble Bond Dickinson (US) LLP
- International Application: PCT/CN2018/108355 WO 20180928
- International Announcement: WO2020/062030 WO 20200402
- Main IPC: B60W10/20
- IPC: B60W10/20 ; B60W30/10 ; B60W30/18 ; G05D1/02 ; B60W60/00

Abstract:
In one embodiment, in response to a request to make a three-point turn for an autonomous driving vehicle (ADV), a forward turning path is generated using a first spiral function based on a maximum forward curvature change rate. A backward turning path is generated using a second spiral function based on a maximum backward curvature change rate. The forward and backward curvature change rates may be determined based on the maximum forward and backward turning angles associated with the ADV, which may be specified as a part of vehicle specification or vehicle design of the ADV. The backward turning path is initiated from an end point of the forward turning path. A three-point turn path is then generated based on the forward turning path and the backward turning path. The ADV is then driven according to the three-point turn path by issuing one or more proper control commands.
Public/Granted literature
- US20210221374A1 SPIRAL PATH BASED THREE-POINT TURN PLANNING FOR AUTONOMOUS DRIVING VEHICLES Public/Granted day:2021-07-22
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