Sökning: "Operational disturbances"

Visar resultat 1 - 5 av 30 avhandlingar innehållade orden Operational disturbances.

1. 1. Dynamic Power System Load -Estimation of Parameters from Operational Data

   Författare :Ines Romero; Industriell elektroteknik och automation; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; control engineering; robotics; Automation; large disturbances; Load modeling; normal operation; voltage stability; dynamic load models; modeling and identification; normalization in reactive load models; Elektronik och elektroteknik; Electronics and Electrical technology; Automatiska system; robotteknik; reglerteknik; Electrical engineering; Elektroteknik;

   Sammanfattning : The significance of load modeling for voltage stability studies has been emphasized by several disturbances, which have taken place in the past years. They have shown that the loads in combination with other dynamics are among the main contributors of prolonged low voltage conditions, voltage instability and collapse in the power system. LÄS MER

3. 2. The Impact of High-Quality Information on Performance in Manufacturing

   Författare :Roger Lindau; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; real-time; automatic data capture; planning; disturbances; high-quality information; manufacturing; disturbance absorption measures; scheduling;

   Sammanfattning : The dissertation deals with the impact of high-quality information on performance in manufacturing. In a system where two material flows with sequence dependency are matched, the use of real-time information to monitor and control the sequencing buffer improves the system's ability to schedule many different models, compared with a system with no information at all. LÄS MER

4. 3. Management of technology in the process industries:  Matching market and machine

   Författare :Peter Samuelsson; Pär Jönsson; Rob Boom; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; process industries; manufacturing; innovation; configuration; strategizing; capability; configuration modelling; process industries; production system; physical modelling; AOD; converter geometry; injection; mixing times; electric arc furnace; EAF; post-combustion; high-impedance; network disturbances; operational results; Metallurgical process science; Metallurgisk processvetenskap;

   Sammanfattning : The process industries span multiple industrial sectors and constitute a substantial part of the entire manufacturing industry. Since companies belonging to this family of industries are often very asset intensive, their ability to respond to changes is often limited in the short term. LÄS MER

5. 4. Coordination and Analysis of Connected and Autonomous Vehicles in Freeway On-Ramp Merging Areas

   Författare :Jie Zhu; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Operational efficiency; Safety impacts; Freeway on-ramp merging; Microscopic traffic simulation; Connected and autonomous vehicles; Coordinative merging strategy;

   Sammanfattning : Freeway on-ramps are typical bottlenecks in the freeway network, where the merging maneuvers of ramp vehicles impose frequent disturbances on the traffic flow and cause negative impacts on traffic safety and efficiency. The emerging Connected and Autonomous Vehicles (CAVs) hold the potential for regulating the behaviors of each individual vehicle and are expected to substantially improve the traffic operation at freeway on-ramps. LÄS MER

7. 5. Information Technology for Learning and Acquiring of Work Knowledge among Production Workers

   Författare :Fredrik Ericsson; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Datavetenskap; Workplace learning; Information systems; Experiential learning; Knowledge management; Datavetenskap; Computer science; Datavetenskap;

   Sammanfattning : This thesis is about information technology for learning and acquiring of work knowledge among production workers in a manufacturing company. Focus is on production or factory workers in workplaces where the job workers do have a routine character. LÄS MER