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On the Safe Motion of Connected Automated Vehicles: Dynamics, Planning and Controls
On the Safe Motion of Connected Automated Vehicles: Dynamics, Planning and Controls
On the Safe Motion of Connected Automated Vehicles: Dynamics, Planning and Controls

Detailed Information

Material Type  
 단행본
 
0017164511
Date and Time of Latest Transaction  
20250211153011
ISBN  
9798384044833
DDC  
621
Author  
Oh, Sanghoon.
Title/Author  
On the Safe Motion of Connected Automated Vehicles: Dynamics, Planning and Controls
Publish Info  
[Sl] : University of Michigan, 2024
Publish Info  
Ann Arbor : ProQuest Dissertations & Theses, 2024
Material Info  
144 p
General Note  
Source: Dissertations Abstracts International, Volume: 86-03, Section: A.
General Note  
Advisor: Orosz, Gabor.
학위논문주기  
Thesis (Ph.D.)--University of Michigan, 2024.
Abstracts/Etc  
요약The safety of a connected automated vehicle's (CAV's) motion has two necessary conditions: stability of the trajectory and conflict avoidance to other road participants. Different challenges arise when designing a motion planning and control system to achieve the conditions, such as unstable vehicle states, mismatches between planned and tracked movements and planning difficulties in complex environments. Recent advancements in trajectory planning and control design are often limited to specific driving scenarios or subsystems, hindering scalability. Implementing a hierarchical structure and feedback design for decision-making, planning, and control systems, with a better understanding of subsystem interactions, can help address this issue. Along with the systematic solution, vehicle-to-everything (V2X) connectivity offers a cost-effective way to enhance situational awareness and provide beyond-the-line-of-sight information, opening up endless possibilities for use cases. Three challenges for achieving the overarching goal of generating safe motion of CAVs are considered: a) Appropriate modeling of CAV dynamics at diverse operating conditions, b) Smooth motion planning compatible with V2X connectivity, and c) Verifiable safety of the CAV's motion in complex urban scenarios. To tackle the first challenge, high-fidelity single-track models were developed to describe automated vehicles' lateral and yaw motion. Bifurcation analysis of the models can lead to a knowledgeable selection of the proper model used for both motion planner and controller. For smooth motion planning, a three-clothoid-based motion planner is proposed and has features including tunability, a fast feasibility check, encodability, and interpretability. The constant space complexity of the abstraction of the plan while keeping the smoothness makes it possible to encode the plan to a V2X message and can be potentially used for conflict resolution of multiple CAVs. For the last challenge regarding the safety verification of CAVs' motion, a signalized intersection with a mixed traffic scenario is considered. Hamilton-Jacobi reachability (HJ reachability) method can be used for both decision-making and control and provides a provable guarantee of safety under the uncertainty of connected human driver's (CHV's) motion. A decomposition method for reachability computation is applicable for the extension of the intersection problem to multiple lanes. A theoretical extension of HJ reachability to systems with input delay can be formulated as a sequential differential game format and corresponding solvable Hamilton-Jacobi-Bellman equations are derived.
Subject Added Entry-Topical Term  
Mechanical engineering
Subject Added Entry-Topical Term  
Engineering
Subject Added Entry-Topical Term  
Transportation
Index Term-Uncontrolled  
Connected automated vehicle
Index Term-Uncontrolled  
Vehicle dynamics
Index Term-Uncontrolled  
Motion planning
Index Term-Uncontrolled  
Urban scenarios
Index Term-Uncontrolled  
Decision-making
Added Entry-Corporate Name  
University of Michigan Mechanical Engineering
Host Item Entry  
Dissertations Abstracts International. 86-03A.
Electronic Location and Access  
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■1001  ▼aOh,  Sanghoon.
■24510▼aOn  the  Safe  Motion  of  Connected  Automated  Vehicles:  Dynamics,  Planning  and  Controls
■260    ▼a[Sl]▼bUniversity  of  Michigan▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a144  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  A.
■500    ▼aAdvisor:  Orosz,  Gabor.
■5021  ▼aThesis  (Ph.D.)--University  of  Michigan,  2024.
■520    ▼aThe  safety  of  a  connected  automated  vehicle's  (CAV's)  motion  has  two  necessary  conditions:  stability  of  the  trajectory  and  conflict  avoidance  to  other  road  participants.  Different  challenges  arise  when  designing  a  motion  planning  and  control  system  to  achieve  the  conditions,  such  as  unstable  vehicle  states,  mismatches  between  planned  and  tracked  movements  and  planning  difficulties  in  complex  environments.  Recent  advancements  in  trajectory  planning  and  control  design  are  often  limited  to  specific  driving  scenarios  or  subsystems,  hindering  scalability.  Implementing  a  hierarchical  structure  and  feedback  design  for  decision-making,  planning,  and  control  systems,  with  a  better  understanding  of  subsystem  interactions,  can  help  address  this  issue.  Along  with  the  systematic  solution,  vehicle-to-everything  (V2X)  connectivity  offers  a  cost-effective  way  to  enhance  situational  awareness  and  provide  beyond-the-line-of-sight  information,  opening  up  endless  possibilities  for  use  cases.  Three  challenges  for  achieving  the  overarching  goal  of  generating  safe  motion  of  CAVs  are  considered:  a)  Appropriate  modeling  of  CAV  dynamics  at  diverse  operating  conditions,  b)  Smooth  motion  planning  compatible  with  V2X  connectivity,  and  c)  Verifiable  safety  of  the  CAV's  motion  in  complex  urban  scenarios.  To  tackle  the  first  challenge,  high-fidelity  single-track  models  were  developed  to  describe  automated  vehicles'  lateral  and  yaw  motion.  Bifurcation  analysis  of  the  models  can  lead  to  a  knowledgeable  selection  of  the  proper  model  used  for  both  motion  planner  and  controller.  For  smooth  motion  planning,  a  three-clothoid-based  motion  planner  is  proposed  and  has  features  including  tunability,  a  fast  feasibility  check,  encodability,  and  interpretability.  The  constant  space  complexity  of  the  abstraction  of  the  plan  while  keeping  the  smoothness  makes  it  possible  to  encode  the  plan  to  a  V2X  message  and  can  be  potentially  used  for  conflict  resolution  of  multiple  CAVs.  For  the  last  challenge  regarding  the  safety  verification  of  CAVs'  motion,  a  signalized  intersection  with  a  mixed  traffic  scenario  is  considered.  Hamilton-Jacobi  reachability  (HJ  reachability)  method  can  be  used  for  both  decision-making  and  control  and  provides  a  provable  guarantee  of  safety  under  the  uncertainty  of  connected  human  driver's  (CHV's)  motion.  A  decomposition  method  for  reachability  computation  is  applicable  for  the  extension  of  the  intersection  problem  to  multiple  lanes.  A  theoretical  extension  of  HJ  reachability  to  systems  with  input  delay  can  be  formulated  as  a  sequential  differential  game  format  and  corresponding  solvable  Hamilton-Jacobi-Bellman  equations  are  derived.
■590    ▼aSchool  code:  0127.
■650  4▼aMechanical  engineering
■650  4▼aEngineering
■650  4▼aTransportation
■653    ▼aConnected  automated  vehicle
■653    ▼aVehicle  dynamics
■653    ▼aMotion  planning
■653    ▼aUrban  scenarios
■653    ▼aDecision-making
■690    ▼a0548
■690    ▼a0537
■690    ▼a0709
■71020▼aUniversity  of  Michigan▼bMechanical  Engineering.
■7730  ▼tDissertations  Abstracts  International▼g86-03A.
■790    ▼a0127
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164511▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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