Essays about: "load modelling"

Showing result 21 - 25 of 269 essays containing the words load modelling.

1. 21. Multibody modelling of the vibrations in an aircraft engine

   University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

   Author : Charly Mollet; [2022]
   Keywords : Vibrations; Multibody Modelling; Rolling Bearings; Rotor Dynamics; Reduction Processes; Vibrationer; multikroppsmodellering; rullingslager; rotordynamik; reducktionsprocesser;

   Abstract : During the assembly of aircraft engines, some clearance is left in the rolling bearings mainly to reduce friction. However this clearance might allow the rolling element to vibrate during flight. Indeed, unwanted vibrations called non-synchronous vibrations (NSV) appear on the data recorded by the sensors on some development engines. READ MORE

3. 22. Compressor Surge: Simulation, Modeling and Analysis

   University essay from KTH/Skolan för teknikvetenskap (SCI)

   Author : Robin Massiquet; [2022]
   Keywords : Turbo compressor; Surge; Simulation; Modelling;

   Abstract : The master thesis subject takes place in the automotive industry and specifically in the internal combustion engine area. The need of improving the efficiency of the engines leads to develop new technologies like turbo compressors. Some of the challenges to overcome are high rotational speed difficulties or extreme load and fatigue in the rotors. READ MORE

4. 23. Modelling an air handling unit, building and occupant, regarding energy, moisture and frost protection

   University essay from Lunds universitet/Avdelningen för Energi och byggnadsdesign; Lunds universitet/Institutionen för arkitektur och byggd miljö

   Author : Marius Daugela; [2022]
   Keywords : Technology and Engineering;

   Abstract : Frost formation in heat exchangers is an often accruing issue in cold climates. The aim of the project is to calculate the risk of frost formation in different Swedish cities by modeling vapor and frost behavior in heat exchangers... READ MORE

5. 24. On Modelling Ancillary Services Markets: A Time Series Approach

   University essay from KTH/Matematik (Avd.)

   Author : Erik Murray; [2022]
   Keywords : ARIMA; SARIMA; GARCH; load balancing; ancillary services; electrical grids; FCR-D; ARIMA; SARIMA; GARCH; lastbalans; stödtjänster; kraftnät; FCR-D 2;

   Abstract : So-called ancillary services (AS) have always been critically important for the functioning of an electrical grid, and are becoming even more so with the advent of renewable energy sources. Ancillary services are traded on open markets, and trading on these markets is arguably even more difficult to model than on traditional markets. READ MORE

6. 25. Contamination Level Detection of Hydraulic Pressure Filters in Forklifts : using only pump motor currents and load pressure measurements

   University essay from Linköpings universitet/Institutionen för systemteknik

   Author : Robert Sehlstedt; Erik Sellén; [2022]
   Keywords : forklift; contamination; level; fault; detection; hydraulic; pressure; filter; pump; motor; current; pressure; data; pdm; predictive; maintenance; rm; reactive; physical; model; modelling; models; moving; window; linear; regression; armature; mean; gaffeltruck; kontamineringsnivå; kontaminering; detektering; feldetektering; tryckfilter; hydraulikfilter; hydraulfilter; filter; pumpfilter; pump; motor; motorström; tryck; linjär; regression; linjärregression; fysikalisk; modellering; modell; armatur; genomsnittsvärde; fönster; data; datafönster;

   Abstract : With the advent of Industry 4.0 and the Internet of Things, collecting data on Cyber-Physical systems has become the norm practice in large scale industries. By collectingrelevant data, it is possible to monitor the health status of whole systems or specificcomponents within them. READ MORE