Sökning: "train"

Visar resultat 16 - 20 av 527 avhandlingar innehållade ordet train.

1. 16. Noise from Train Cooling Fans

   Författare :Yan Jiang; Mats Åbom; Thomas Carolus; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Acoustics; Akustik;

   Sammanfattning : This thesis concerns a study undertaken on a railway vehicle cooling fan system. Several design modifications were proposed and tested in the laboratory in order to evaluate different noise control measures. The most effective noise control measure involving combining lots of different measures gave 7 dB(A) noise reduction. LÄS MER

3. 17. Visions of Strategy : Following Clausewitz's Train of Thought

   Författare :Anders Palmgren; Michael Rainsborough; Försvarshögskolan; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Krigsvetenskap; Krigsvetenskap;

   Sammanfattning : .... LÄS MER

4. 18. Thermo-mechanical behaviour of sliding contact

   Författare :Daniel Thuresson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; train; contact mechanics; thermo-mechanical; simulation; brake;

   Sammanfattning : .... LÄS MER

5. 19. Parameter estimation and model based control design of drive train systems

   Författare :Mats Tallfors; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; control; drive train; estimation; identification; mechanical; Signalbehandling; Signal processing; Signalbehandling;

   Sammanfattning : The main control task in many speed-controlled drives is to eliminate or reduce the load speed error caused by the load torque disturbance and reduce oscillations as quickly as possible. This thesis addresses different aspects of identification and control of such resonant elastic systems. LÄS MER

7. 20. Drive train system dynamic analysis; Application to wind turbines

   Författare :Saeed Asadi; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wind turbine drive train dynamics; Model validation; Global sensitivity analysis; Bearing defects detection;

   Sammanfattning : To facilitate the design and production of highly efficient and reliable wind turbine drive trains, the project deals with the mathematical modelling and experimental study of drive train system dynamics.A typical drive train is considered as the subsystem of a wind turbine that transfers mechanical power from the rotor hub to the generator, and thereby plays an important role in the system dynamics and efficiency of wind turbine operation. LÄS MER