公开(公告)号：US20210294333A1

公开(公告)日：2021-09-23

申请号：US16826117

申请日：2020-03-20

Applicant: TUSIMPLE, INC.

Inventor： Junbo JING ,  Arda KURT ,  Tianqu SHAO ,  Chasen SHERMAN ,  Xing SUN

IPC: G05D1/02 ,  B62D15/02

Abstract: Methods, systems and apparatus for autonomous vehicle path planning and path navigation are described. One example system includes an offline server configured to generate a library of optimal paths for navigating a geographic area, wherein the geographic area is represented as a grid node map and an orientation grid bin map and wherein the optimal paths correspond to paths between pairs of grid node pairs in the grid node map based on optimization criteria, a storage device on the autonomous vehicle for storing the library of optimal paths, and an online server located on the autonomous vehicle configured to access information from the library of optimal paths from the storage device based on a current position and a current heading of the autonomous vehicle, and navigating the autonomous vehicle through the geographic area based on the information.

公开(公告)号：US20210403032A1

公开(公告)日：2021-12-30

申请号：US16912444

申请日：2020-06-25

Applicant: TUSIMPLE, INC.

Inventor： Junbo JING ,  Arda KURT ,  Yujia WU ,  Tianqu SHAO ,  Xing SUN ,  Zijie XUAN ,  Haoming SUN ,  Chasen SHERMAN

IPC: B60W60/00 ,  G05D1/02 ,  G05D1/00 ,  H04W4/40

Abstract: Described is a two-level optimal path planning process for autonomous tractor-trailer trucks which incorporates offline planning, online planning, and utilizing online estimation and perception results for adapting a planned path to real-world changes in the driving environment. In one aspect, a method of navigating an autonomous vehicle includes determining, by an online server, a current vehicle state of the autonomous vehicle in a mapped driving area. The method includes receiving, by the online server from an offline path library, a path for the autonomous driving vehicle through the mapped driving area from the current vehicle state to a destination vehicle state, and receiving fixed and moving obstacle information. The method includes adjusting the path to generate an optimized path that avoids the fixed and moving obstacles and ends at a targeted final vehicle state, and navigating the autonomous vehicle based on the optimized path.

公开(公告)号：US20210229668A1

公开(公告)日：2021-07-29

申请号：US16773541

申请日：2020-01-27

Applicant: TUSIMPLE, INC.

Inventor： Junbo JING ,  Arda KURT ,  Chasen SHERMAN ,  Tianqu SHAO ,  Haoming SUN

IPC: B60W30/18 ,  B60W60/00 ,  B60W10/18 ,  F02D9/06 ,  B60W10/06

Abstract: Methods, systems, and devices related to a method of controlling an autonomous vehicle, in particular, an autonomous diesel-engine truck are disclosed. In one example aspect, the method includes determining an available engine brake torque generation mechanism for reducing a current speed of the autonomous vehicle to a lower speed and selecting a brake mode corresponding to the engine brake torque availability. In case a rate of speed reduction is equal to or smaller than a threshold, the brake mode includes only an engine brake in which engine exhaust valve opening is adjusted for reducing the current speed. The threshold determined in part based on the available engine brake torque, gear position of the transmission, and the online estimated vehicle longitudinal dynamic model. In case the rate of speed reduction is greater than the threshold, the brake mode incudes a combination of the engine brake and the foundation brake.

公开(公告)号：US20240308519A1

公开(公告)日：2024-09-19

申请号：US18677656

申请日：2024-05-29

Applicant: TUSIMPLE, INC.

Inventor： Junbo JING ,  Arda KURT ,  Chasen SHERMAN ,  Tianqu SHAO ,  Haoming SUN

IPC: B60W30/18 ,  B60W10/06 ,  B60W10/18 ,  B60W60/00 ,  F02D9/06

CPC classification number: B60W30/18136 ,  B60W10/06 ,  B60W10/18 ,  B60W60/0025 ,  F02D9/06 ,  B60W2510/0657 ,  B60W2510/10 ,  B60W2520/10 ,  B60W2520/28 ,  B60W2710/06 ,  B60W2710/18 ,  F02D2200/1006

Abstract: Methods, systems, and devices related to a method of controlling an autonomous diesel-engine vehicle. In one example aspect, the method includes determining longitudinal dynamic response properties of the autonomous vehicle. A brake mode is selected for reducing a current speed of the autonomous vehicle to a lower speed, based on a threshold that is determined using the longitudinal dynamic response properties of the vehicle. When a rate of speed reduction is equal to or smaller than the threshold, the brake mode includes only an engine brake in which engine exhaust valve opening is adjusted for reducing the current speed. When the rate of speed reduction is greater than the threshold, the brake mode incudes a combination of the engine brake and the foundation brake.

公开(公告)号：US20230126540A1

公开(公告)日：2023-04-27

申请号：US17966751

申请日：2022-10-14

Applicant: TuSimple, Inc.

Inventor： Lei WANG ,  Tianqu SHAO ,  Yujia WU

IPC: B60W30/16

Abstract: A method of operating a vehicle, comprises determining, by a computer located in a first vehicle, that an initial distance between the first vehicle and a second vehicle is less than a first distance or a second distance, where the second vehicle is located in a same lane as and in front of the first vehicle; generating, in response to the determining, a sequence of position values and velocity values for the first vehicle, wherein each of the position values and each of the velocity values are associated with a time value; and causing the first vehicle to increase a distance between the first vehicle and the second vehicle by causing the first vehicle to move or operate according to the sequence of position values and velocity values.