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Optimal Control of State-Dependent Switched Systems
Optimal Control of State-Dependent Switched Systems
Optimal Control of State-Dependent Switched Systems

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105328
ISBN  
9798263328795
DDC  
620
저자명  
Zhou, Mi.
서명/저자  
Optimal Control of State-Dependent Switched Systems
발행사항  
[Sl] : Georgia Institute of Technology, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
129 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Abdallah, Chaouki;Verriest, Erik.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2025.
초록/해제  
요약This thesis addresses the optimal control of state-dependent switched systems-a class of hybrid dynamical systems characterized by state-triggered transitions across known interfaces. Such systems arise in applications ranging from robotics and chemical process control to electronic circuits, yet the classical Pontryagin Minimum Principle applies only to continuously differentiable dynamics. Moreover, existing numerical toolboxes often lack both ease of use and rigorous error guarantees. To overcome these challenges, this thesis develops new theoretical foundations and efficient computational algorithms.In the first part of the thesis, we propose a generalized Euler-Lagrange Equation (GEL) which clarifies a quantitative property of the co-state's behavior for systems with a timeinvariant switching interface. We derive the optimal control for state-dependent switched systems using the calculus of variations technique. We further extend the theory to systems with time-varying switching interfaces and constant time delays in states. We illustrate our theoretical results through representative simulation examples.In the second part of the thesis, we develop and analyze numerical methods for the optimal control of state-dependent switched systems. First, we propose a model-based gradient descent method grounded in our hybrid optimality conditions and generalized Euler-Lagrange equation. To address its reliance on known switching sequences and its limited scalability, we then propose a model-free approximation method that uses basis functions to approximate the control input and gradient descent to update the parameters of the control approximation. A precise error bound of this approximation is derived under some assumptions. Simulation results are provided to show the power of this model-free method. We next extend this model-free algorithm to systems with fixed terminal states using the augmented Lagrangian method and dual decomposition. We illustrate our approach on a range of examples, including systems with differentiable dynamics, systems with state-dependent switches, systems with time delays, and systems with both switches and time delays. In addition, we offer a user-friendly MATLAB toolbox that implements this model-free method.In the third part of the thesis, we investigate reinforcement learning techniques for hybrid systems. We demonstrate that applying the deterministic policy gradient directly to state-dependent switched systems results in high variance and instability. To remedy this, we propose a piecewise reinforcement learning scheme, analogous to a piecewise control approximation, which achieves lower variance and improved suboptimal control performance.
일반주제명  
Robots
일반주제명  
Dynamic programming
일반주제명  
Dynamical systems
일반주제명  
Ordinary differential equations
일반주제명  
Robotics
일반주제명  
Industrial engineering
일반주제명  
Mathematics
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■1001  ▼aZhou,  Mi.
■24510▼aOptimal  Control  of  State-Dependent  Switched  Systems
■260    ▼a[Sl]▼bGeorgia  Institute  of  Technology▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a129  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Abdallah,  Chaouki;Verriest,  Erik.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2025.
■520    ▼aThis  thesis  addresses  the  optimal  control  of  state-dependent  switched  systems-a  class  of  hybrid  dynamical  systems  characterized  by  state-triggered  transitions  across  known  interfaces.  Such  systems  arise  in  applications  ranging  from  robotics  and  chemical  process  control  to  electronic  circuits,  yet  the  classical  Pontryagin  Minimum  Principle  applies  only  to  continuously  differentiable  dynamics.  Moreover,  existing  numerical  toolboxes  often  lack  both  ease  of  use  and  rigorous  error  guarantees.  To  overcome  these  challenges,  this  thesis  develops  new  theoretical  foundations  and  efficient  computational  algorithms.In  the  first  part  of  the  thesis,  we  propose  a  generalized  Euler-Lagrange  Equation  (GEL)  which  clarifies  a  quantitative  property  of  the  co-state's  behavior  for  systems  with  a  timeinvariant  switching  interface.  We  derive  the  optimal  control  for  state-dependent  switched  systems  using  the  calculus  of  variations  technique.  We  further  extend  the  theory  to  systems  with  time-varying  switching  interfaces  and  constant  time  delays  in  states.  We  illustrate  our  theoretical  results  through  representative  simulation  examples.In  the  second  part  of  the  thesis,  we  develop  and  analyze  numerical  methods  for  the  optimal  control  of  state-dependent  switched  systems.  First,  we  propose  a  model-based  gradient  descent  method  grounded  in  our  hybrid  optimality  conditions  and  generalized  Euler-Lagrange  equation.  To  address  its  reliance  on  known  switching  sequences  and  its  limited  scalability,  we  then  propose  a  model-free  approximation  method  that  uses  basis  functions  to  approximate  the  control  input  and  gradient  descent  to  update  the  parameters  of  the  control  approximation.  A  precise  error  bound  of  this  approximation  is  derived  under  some  assumptions.  Simulation  results  are  provided  to  show  the  power  of  this  model-free  method.  We  next  extend  this  model-free  algorithm  to  systems  with  fixed  terminal  states  using  the  augmented  Lagrangian  method  and  dual  decomposition.  We  illustrate  our  approach  on  a  range  of  examples,  including  systems  with  differentiable  dynamics,  systems  with  state-dependent  switches,  systems  with  time  delays,  and  systems  with  both  switches  and  time  delays.  In  addition,  we  offer  a  user-friendly  MATLAB  toolbox  that  implements  this  model-free  method.In  the  third  part  of  the  thesis,  we  investigate  reinforcement  learning  techniques  for  hybrid  systems.  We  demonstrate  that  applying  the  deterministic  policy  gradient  directly  to  state-dependent  switched  systems  results  in  high  variance  and  instability.  To  remedy  this,  we  propose  a  piecewise  reinforcement  learning  scheme,  analogous  to  a  piecewise  control  approximation,  which  achieves  lower  variance  and  improved  suboptimal  control  performance.
■590    ▼aSchool  code:  0078.
■650  4▼aRobots
■650  4▼aDynamic  programming
■650  4▼aDynamical  systems
■650  4▼aOrdinary  differential  equations
■650  4▼aRobotics
■650  4▼aIndustrial  engineering
■650  4▼aMathematics
■690    ▼a0771
■690    ▼a0546
■690    ▼a0405
■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360255▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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