Search for dissertations about: "Semi-active control"

Showing result 1 - 5 of 7 swedish dissertations containing the words Semi-active control.

  1. 1. Washing Machine Design Optimization Based on Dynamics Modeling

    University dissertation from Chalmers University of Technology

    Author : Thomas Nygårds; Chalmers tekniska högskola.; Chalmers University of Technology.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reglerteknik; Automatic control; Fastkroppsmekanik; Solid mechanics; Konstruktionsteknik; Construction engineering; Övrig teknisk mekanik; Other engineering mechanics; Washing machine; Suspensions; Modeling; Experiments; Vibration dynamics; Multiobjective Optimization; Automatic balancing; Semi-active control.;

    Abstract : The spinning process in a washing machine is a source of undesired vibrations and noise and may cause discomfort both to the user as well as for the machine itself due to vibrations which have impact on system lifetime, reliability of operation and capacity. The aim of this thesis is to develop mathematical and computational models of a washing machine of modern type and use these models for dynamics analysis and in optimization routines to make improvements of the machine mechanical design. READ MORE

  2. 2. Advances In Heavy Vehicle Dynamics with Focus on Engine Mounts and Individual Front Suspension

    University dissertation from Chalmers University of Technology

    Author : Hoda Yarmohamadi; Chalmers tekniska högskola.; Chalmers University of Technology.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; heavy vehicle; individual front suspension; comfort; handling; kinematics; semi-active damper; engine mount; nonlinear dynamic stiffness and damping; vibration isolation; adaptronic mounting system;

    Abstract : The main objective of the research presented in this thesis is to enhance driver comfort and handling of a heavy truck that in turn leads to better vehicle safety and stability. The focus has been put on studying two suspension systems of the truck, engine and front axle suspensions, due to their significant impact on the dynamic performance of the vehicle. READ MORE

  3. 3. MODELING AND OPTIMIZATION OF WASHING MACHINE VIBRATION DYNAMICS DURING SPINNING

    University dissertation from Chalmers University of Technology

    Author : Thomas Nygårds; Chalmers tekniska högskola.; Chalmers University of Technology.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Övrig teknisk mekanik; Other engineering mechanics; Washing machine; Suspension system; Modeling; Experiment; Spinning; Vibration dynamics; Optimization; Semi-active control; Magnetorheological damper.;

    Abstract : A washing machine as a product is familiar to almost everyone in all developed countries. This thesis deals with the dynamics of modern washing machines of household type. READ MORE

  4. 4. Compliance Control of Robot Manipulator for Safe Physical Human Robot Interaction

    University dissertation from Örebro : Örebro university

    Author : Muhammad Rehan Ahmed; Örebro universitet.; [2011]
    Keywords : Physical human robot interaction; collision safety; variable stiffness actuators; compliance control; TECHNOLOGY; TEKNIKVETENSKAP; TECHNOLOGY Information technology Automatic control; TEKNIKVETENSKAP Informationsteknik Reglerteknik; Reglerteknik; Automatic Control;

    Abstract : Inspiration from biological systems suggests that robots should demonstrate same level of capabilities that are embedded in biological systems in performing safe and successful interaction with the humans. The major challenge in physical human robot interaction tasks in anthropic environment is the safe sharing of robot work space such that robot will not cause harm or injury to the human under any operating condition. READ MORE

  5. 5. Towards active engine mounting systems for commercial vehicles: modeling and analysis

    University dissertation from Chalmers University of Technology

    Author : Hoda Yarmohamadi; Chalmers tekniska högskola.; Chalmers University of Technology.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk mekanik; Engineering mechanics; Farkostteknik; Vehicle engineering; Övrig teknisk mekanik; Other engineering mechanics; Commercial vehicles; Conventional engine mount; Computational model; Nonlinear dynamic stiffness and damping; Vibration isolation; Model errors tolerance; Adaptronic mounting system; Actuators;

    Abstract : The vehicle engine mounting system, which consists of several mounts connecting the engine to the vehicle structure, not only supports the weight of the engine but also isolates the noise, vibration and the transmitted forces to the vehicle structure. At present conventional elastomeric mounts are widely used in engine mounting systems for commercial vehicles. READ MORE