Mikroelektromekaniska system eller MEMS, används i allt större utsträcknining i fordon för att samla mätresultat om vinkel samt acceleration som sedan kan användas i samband med andra system i fordonet för ökad säkerhet och stabilitet. I bilar har smarta system använts sedan länge för airbag-system och ABS bromsar. Då just MEMS-sensorer har fördelar som pris, storlek och tillgänglighet ses allt fler möjligheter även för utveckling kring motorcyklar. Målet med detta projekt har varit att ta fram en prispressad och lite enklare produkt där föraren kan se information om sin lutning och acceleration med hjälp av en accelerometer och gyroskop . Tester har gjorts med produkten fastmonterad på motorcykel på data såsom lutning och acceleration efter ett så kallat komplementärfilter. Detta har gjorts för att se vilka värden på filtret som fungerar bäst för en eventuell färdig produkt. Utifrån testerna kan man utgöra att motorvibrationer har en påverkan för mätning av acceleration och vinkel. Dessa minskar i viss mån med vibrationsdämpande lösningar såsom gummiupphängningar men för att kunna få ut mätbara värden implementeras ett mjukvaru lågpassfilter samt ett komplementärfilter.

This project has investigated how to reshape two-wheel mobility in a more functional driven way, without losing the thrill of riding a motorcycle. The intitial cue was offered by the current rise of electric powertrains in the market. The opportunity of finding new spaces in the existing motorcycle architecture that could increase it's functionality and safety served as inspiration for this project. By achieving these steps this project wishes to envision a product that can attract new audiences whilst making two-wheel mobility more accessible. The process involved a variety of techniques that range from concept creation to 3D visualisation. During the ideation phase digital and analogue sketching techniques were combined after benchmarking existing products and visualising through animations possible solutions. In a later step the design was refined using digital painting in addition to polygon modelling. It has been helpful to evaluate the product in VR through various steps of the process, this provided a better understanding of the volumes and enabled a more accurate design of certain components. The result of the project is Flux. Combining unusual materials, like silicone, with a new layout offered the possibility of creating a simple yet advanced solution that provides various benefits to riding in everyday life. These benefits range from an enhanced cargo capability to an easier way to swap or recharge the batteries. In addition, it features some seamlessly integrated technology improvements that are vowed to make riding safer, without compromising on the experience.

This diploma thesis called Motorcycle Race Dynamics captures the development and development of motorcycles, a description of types, design elements and the techniques of riding a motorcycle. However, the aim of this work is to organize, perform and evaluate the measurement of braking deceleration and the crossing of motorcycles. Before separate data processing, a theoretical methodology for measuring transverse displacement and braking deceleration is proposed. This requires enough motorcycles, experienced riders, two cameras, a measuring instrument and precisely dimensioned lines. The lateral displacement and braking deceleration measurements are then performed and subsequently evaluated. Output of this work include, in addition to videos, an overview of transverse displacement times, or longitudinal deceleration output values gained from braking.

The diploma thesis is focused on the design of a sport electric motorcycle, designed for road traffic for one-man crew. The aim of the concept is to distinguish it from the design of the current production, which is typically based on conventional motorcycles.

This thesis describes the design and subsequent construction of a board computer for a motorbike, using a GPS module. Vehicle speed, distance travelled and the motor's rotations (RPM) are among the basic elements that are measured and shown. Furthermore, the mechanism allows one to measure and show the average consumption, the temperature of the surrounding environment as well as the motor's temperature, battery voltage, current time, and, with the help of the GPS module, the current GPS location of the vehicle, including altitude. The vehicle's entire journey can be saved to the memory card for further processing in a PC.

The task of this diploma thesis is technical solution for deformation measuring of motorcycle components. By reason of the technical discretion, technology of measurement was changed to another, using image processing. Retrieval which describes fundamental principle of method named photogrammetry and the main conditions of measuring. For a practical testing the carbon composite tube of main motorbike fork was used. It was loaded a with a bending moment. Due to measuring technology was changed, so the design of loading bench was change too. In the end of diploma thesis is appreciation of practical experience discovered in writing of this thesis.

This thesis deals with the design of motorcycle powered by Wankel engine. The motorbike is used in normal road traffic. The work solves the use of unconventional drive unit in combination with modern chassis solution. The aim is a complex koncept of motorbike using modern technology, which takes into account appropriate categorization of this bike and ergonomic requirements. It would be a significant non-traditional bike demonstrating the new possibilities.

This diploma thesis deals with the problematic of measuring motorcycle performance output using dynamometers primary designed for measuring performance output of four wheel personal vehicles, proposals and comparison of possible designs of device that enable this method of motorcycle performance output measuring by using FEA methods.

abstract: Bicycles and motorcycles offer maneuverability, energy efficiency and acceleration that four wheeled vehicles cannot offer given similar budget for. Two wheeled vehicles have drastically different dynamics from four wheeled vehicles due to their instability and gyroscopic effect from their wheels. This thesis focuses on self-stabilization of a motorcycle using an active control momentum gyroscope (CMG) and validation of this multi-degree-of-freedom system’s mathematical model. Physical platform was created to mimic the simulation as accurately as possible and all components used were justified. This process involves derivation of a 3 Degree-of-Freedom (DOF) system’s forward kinematics and its Jacobian matrix, simulation analysis of different controller algorithms, setting the system and subsystem specifications, and real system experimentation and data analysis. A Jacobian matrix was used to calculate accurately decomposed resultant angular velocities which are used to create the dynamics model of the system torque using the Euler-Lagrange method. This produces a nonlinear second order differential equation that is modeled using MATLAB/Simulink. PID, and cascaded feedback loop are tested in this Simulink model. Cascaded feedback loop shows most promises in the simulation analysis. Therefore, system specifications are calculated according to the data produced by this controller method. The model validation is executed using the Vicon motion capture system which captured the roll angle of the motorcycle. This work contributes to creating a set of procedures for creating a validated dynamic model for a CMG stabilized motorcycle which can be used to create variants of other self-stabilizing motorcycle system. / Dissertation/Thesis / Self-balancing test Trial 3 / Self-balancing test Trial 1 / Self-balancing test Trial 2 / Masters Thesis Engineering 2020

More motorcyclists are fatally injured each year in guardrail crashes than passengers of any other vehicle, while only accounting for three percent of the vehicle fleet. Since motorcyclists account for a high percentage of these fatalities, the goal of zero deaths on the road cannot be achieved without addressing the safety of motorcyclists. The objective of this research was to determine the factors that lead to serious or fatal injury in motorcycle barrier crashes, given that a crash occurred. The likelihood of serious or fatal injury in barrier crashes was significantly influenced by both barrier type and rider trajectory after striking the barrier. A national study of motorcyclist fatality risk using the Fatality Analysis Reporting System (FARS) and General Estimates System (GES) showed that crashes with guardrail than crashes were about 7 times more likely to be fatal than those with the ground, based on the most harmful event reported. An analysis of 1,000 riders in barrier crashes in three states showed that the odds of serious injury were 1.4 times greater in guardrail crashes than in concrete barrier crashes. These analyses did not take into account the trajectory of the rider after striking the barrier, since this was unknown. The police accident report for 350 barrier crashes in New Jersey was used to determine the rider trajectory in those crashes. Being ejected from the motorcycle after impacting the barrier significantly increased the odds of serious injury over crashes where the rider was not ejected. While providing insight into factors influencing injury severity, these analyses do not provide an understanding of the nature of injuries incurred in these crashes. To further understand how injuries were caused in motorcycle-barrier crashes, we developed a methodology for determining injury mechanisms in motorcycle-barrier collisions. Using this methodology, we investigated 9 serious motorcycle-to-barrier crashes. In these crashes, as well as in an analysis of 106 barrier crashes in Maryland, the thorax and lower extremities most commonly suffered serious injury. Of particular concern are the posts and top of the rail, both of which can lead to lacerations and blunt trauma. / Ph. D.