• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 108
  • 10
  • 7
  • 6
  • 6
  • 5
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 189
  • 80
  • 60
  • 34
  • 31
  • 30
  • 22
  • 21
  • 19
  • 18
  • 17
  • 16
  • 16
  • 15
  • 14
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
121

Elektronický regulátor rychlosti vozidla / Electronic speed controller

Šimbera, Michal January 2019 (has links)
The thesis deals with the design, realisation and functional verification of an electronic cruise control unit. Required inputs, outputs and controller of the control unit are identified first. The design and layout of the electronical components, including the processor, power supply and other necessary hardware is discussed. The algorithm for the control unit is developed in C/C++ and thoroughly analysed. The functionality of the cruise control unit equipped with the algorithm is verified through a case study performed on a combustion engine.
122

Studie proveditelnosti výstavby infrastruktury pro rekreační plavbu / Feasibility Study of Leisure Time River Navigation Infrastructure Construction

Korych, Tomáš January 2020 (has links)
This diploma thesis deals with feasibility study of a cruise infrastructure. In the first part is explained principle of feasibility study and its recommended outline. Selected parts of feasibility study are then commented especially financial and economic analysis. This part is followed by explanation of some main terms and description of main differences of evaluating economic effectivity of investment between freighter and cruise. Within the scope of this thesis was also processed a feasibility study dealing with specific investment goal prolongation of navigability of Baťa Canal. The study is divided into individual chapters according to the recommended curriculum. Each chapter deals with different issues related to the investment plan. All findings and recommendations of the study are summarized in the final evaluation.
123

Modeling of the Vertical Flight Profile / Modeling of the Vertical Flight Profile

Valíček, Josef January 2011 (has links)
Diplomová práce se zabývá modelováním letadla a simulací různých typů letu. Pro modelování letu bylo podle zadání vybráno proudové letadlo s dlouhým doletem – Gulfstream G550. V první části práce jsou podrobně popsány pohybové rovnice letadla. Dále je vysvětlen numerický model letadla, sestavený na základě pohybových rovnic. Pochopení modelu letadla je nezbytné pro modelování a simulaci vertikálních profilů letu. Práce se zaměřuje na nastavení parametrů modelu letadla podle reálného letadla Gulfstream G550 a modelování vertikálního profilu letu v letové fázi CRUISE. Posledním bodem práce je průzkum optimálního letu letadla vzhledem ke spotřebě paliva. V závěru jsou diskutovány dosažené výsledky a je nastíněn směr případného pokračování práce.
124

Design and Implementation of an Adaptive Cruise Control Algorithm

Kirby, Timothy Joseph January 2021 (has links)
No description available.
125

Segmenting cruise passengers based on their spatio-temporal similarity : an approach utilising dynamic time warping

Borg, Pauline January 2023 (has links)
The present thesis utilises dynamic time warping and cluster analysis with the aim of discovering different touristic profiles. GPS data of cruise passengers intra-destination movement at the destination of Visby, Gotland, was used in the analysis. Further stop detection was performed so as to compare stop activity and stop allocation between the clusters. Four tourist profiles were derived by juxtaposing the category of attractions/areas where high stop densities were found, with the spatial dispersal of stop activity, denoted as either exhibiting a concentrated or exploring pattern. Some key influencers of tourists' spatio-temporal behaviour were also identified. These included whether the cruise passengers appeared to have taken some mode of transportation upon their on-shore visit, whether the area was dense in activities/facilities oriented towards tourists and the time spent at the destination. The contribution of this thesis is twofold. First this thesis contributes to previous research by developing and testing a methodological approach utilising dynamic time warping to investigate cruise passengers' spatio-temporal behaviour at a destination. Second, the results of the thesis may aid destination managers in finding tools and strategies that are tailored after the unique opportunities and challenges posed by different tourist profiles.
126

An exploratory scenario study on cruise ships' resilience and service quality in the context of the COVID-19 pandemic.

Forslund, Emma January 2022 (has links)
Although the cruise industry and ROPAX ships have achieved steady growth with increased capacity, innovative service provisions and constantly being prepared for events of emergencies, they were not prepared for the sudden COVID-19 pandemic, and the travel restrictions and No Sail order put a halt to their services. Organisational resilience has received a growing interest in the world since its capabilities can support organisations to anticipate, cope and adapt to internal or external changes due to a crisis or unexpected event. This exploratory scenario study seeks to examine the cruise ships organisational resilience and service attributes in the context of the COVID-19 pandemic.The empirical findings have been collected by using qualitative semi-structured interviews with four key managers and decision makers within the industry. The findings were themed to find qualitative variations and then analysed in relation to the presented literature through the adaptive change cycle. The adaptive change cycle has been used to explain the drastic and partially chaotic crisis and recovery of cruise services.
127

Implementation of a Scale Semi-autonomous Platoon to Test Control Theory Attacks

Miller, Erik 01 July 2019 (has links) (PDF)
With all the advancements in autonomous and connected cars, there is a developing body of research around the security and robustness of driving automation systems. Attacks and mitigations for said attacks have been explored, but almost always solely in software simulations. For this thesis, I led a team to build the foundation for an open source platoon of scale semi-autonomous vehicles. This work will enable future research into implementing theoretical attacks and mitigations. Our 1/10 scale car leverages an Nvidia Jetson, embedded microcontroller, and sensors. The Jetson manages the computer vision, networking, control logic, and overall system control; the embedded microcontroller directly controls the car. A lidar module is responsible for recording distance to the preceding car, and an inertial measurement unit records the velocity of the car itself. I wrote the software for the networking, interprocess, and serial communications, as well as the control logic and system control.
128

Strategic Trajectory Planning of Highway Lane Change Maneuver with Longitudinal Speed Control

Shui, Yuhao 01 September 2015 (has links)
No description available.
129

Autonomous Unmanned Ground Vehicle (UGV) Follower Design

Chen, Yuanyan 19 September 2016 (has links)
No description available.
130

An embedded model predictive controller for optimal truck driving

Mancino, Francesco January 2017 (has links)
An embedded model predictive controller for velocity control of trucks is developed and tested. By using a simple model of a heavy duty vehicle and knowledge about the slope of the road ahead, the fuel consumption while traveling near a set speed is diminished by almost 1% on an example road compared to a rule based speed control system. The problem is formulated as a look-ahead optimization problem were fuel consumption and total trip time have to be minimized. To find the optimal solution dynamic programming is used, and the whole code is designed to run on a Scania gearbox ECU in parallel with all the current software. Simulations were executed in a Simulink environment, and two test rides were performed on the E4 motorway. / En algoritm för hastighetsstyrning baserad på modell-prediktiv reglering har utvecklats och testats på befintlig styrsystem i ett Scania lastbil. Genom att använda en enkel modell av fordonet och kunskap om lutningen på vägen framför den kunde man sänka bränsleförbrukningen med nästan 1% i vissa sträckor, jämfört med en regelbaserad farthållare. Problemet är formulerat som en optimerings-problem där bränsleförbrukning och total restid måste minimeras. För att hitta den optimala lösningen användes dynamisk programmering och hela koden är skriven så att den kan exekveras på en Scania styrenehet. Koden är kan köras parallellt med den mjukvara som är installerad på styrenheten. Simuleringar utfördes i en miljö utvecklad i Simulink. Två test-körningar på E4 motorvägen utfördes.

Page generated in 0.0276 seconds