Sökning: "DP"

Visar resultat 31 - 35 av 125 avhandlingar innehållade ordet DP.

1. 31. Approximate Methods of Optimal Control via Dynamic Programming Models

   Författare :Yuchao Li; Jonas Mårtensson; Karl H. Johansson; Moritz Diehl; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Optimal Control; Dynamic Programming; Rollout; Model Predictive Control; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : Optimal control theory has a long history and broad applications. Motivated by the goal of obtaining insights through unification and taking advantage of the abundant capability to generate data and perform online simulation, this thesis studies the discrete-time infinite horizon optimal control problems and introduces some approximate solution methods via abstract dynamic programming (DP) models. LÄS MER

3. 32. Digital fall prevention for older adults : Feasibility of a self-managed exercise application and development of a smartphone self-test for balance and leg strength

   Författare :Linda Månsson; Marlene Sandlund; Erik Rosendahl; Maria Wiklund; Fredrik Öhberg; Rolf Moe-Nilssen; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Accidental falls; Aged; Community-based participatory research; eHealth; Falls prevention; mHealth; Self-assessment; Self-management; physiotherapy; fysioterapi; sjukgymnastik; Physiotherapy;

   Sammanfattning : As the numbers of older adults grow, fall prevention is vital to reduce health care needs due to falls and to increase quality of life. Balance and strength exercises have been found to be effective in fall prevention, however, long-term adherence is often poor. LÄS MER

4. 33. Mechanical modeling of granite subjected to contact loading

   Författare :Hossein Shariati; Per-Lennart Larsson; Francois Hild; Mahdi Saadati; Timo Saksala; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solid Mechanics; Hållfasthetslära;

   Sammanfattning : The mechanical properties of Bohus granite subjected to contact loading is investigated based on experimental and numerical results. An elasto-plastic constitutive material model combined with a damage description is employed. The material model parameters are determined based on experimental results. LÄS MER

5. 34. Computationally Efficient and Adaptive Energy Management Strategies for Parallel Hybrid Electric Vehicles

   Författare :Tong Liu; Lei Feng; Hans Johansson; Nikolce Murgovski; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hybrid Electric Vehicle; Energy Management Strategy; Computation Efficiency; Value Function; Adaptive Learning; Processor-in-the- Loop Simulation; Elhybridfordon; Energihanteringsstrategi; Beräkningseffektivitet; Värdefunktion; Adaptiv Inlärning; Processor-in-the-loop; Machine Design; Maskinkonstruktion; Optimeringslära och systemteori; Optimization and Systems Theory; Industriella informations- och styrsystem; Industrial Information and Control Systems;

   Sammanfattning : Hybrid electric vehicles (HEVs) are irreplaceable in attaining sustainable development in contemporary society. Owing to the extra degree of freedom in supplying traction power, HEVs resort to appropriate energy management strategies (EMSs) to present their superiority over conventional internal combustion engine vehicles and pure electric vehicles. LÄS MER

7. 35. Mechanical modeling of granite subjected to indentation loading

   Författare :Hossein Shariati; Per-Lennart Larsson; Mahdi Saadati; Francois Hild; Timo Saksala; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solid Mechanics; Hållfasthetslära;

   Sammanfattning : The understanding of the mechanical response of Bohus granite, as typical of hard rocks, to percussive drilling is important to improve the efficiency of such an operation. The resulting problem includes material modeling of the selected type of rock under indentation loading conditions. LÄS MER