Rear Wheel Steer Bikes: Unconventional stable bicycle

The design of the ordinary bicycle has barely changed since the end of the 19th century. Until then it evolved to a well ridable machine with no need for further drastic modifications. However, around 2011 it was shown that, just like an ordinary bicycle, strange appearing designs could also be stable. One of these designs was a bicycle that...

Dynamic Analysis of the Ampelmann G25 Gangway.

The Ampelmann system is an active motion compensation system that can compensate the vessel motions in six degrees of freedom. The Ampelmann, together with the attached gangway, makes it possible for people to transfer between a vessel and offshore structures safely. The Ampelmann system has been designed in the early stages based on a set of...

The influence of pedalling on the lateral dynamics of cycling: A modelling approach

There are still important knowledge gaps regarding stability and safety of bicycle riding. Every year around 60,000 people need hospital treatment for single sided accidents in the Netherlands alone. Supporting the need for understanding lateral bicycle dynamics. One of the prominent disturbances on lateral bicycle and rider behaviour is...

Exploiting Dynamics in robotic arms with repetitive tasks

Since the industrial revolution, machines have taken over many tasks from humans, increasing labor productivity and prosperity. In the 20th century, the introduction of robots created a second wave of automation, increasing the labor productivity even further. In order to create a third wave of automation, it is necessary to develop a new...

Integrated Stiffness Analysis of Redundant Parallel Manipulator Based on Finite Element Method

An integrated stiffness model is established for a Planar Parallel Manipulator (PPM) with actuation redundancy based on Finite Element Method (FEM), and the static stiffness, dynamitic stiffness and moving stiffness of the PPM are analyzed according to the integrated stiffness model. Firstly, a dynamic model of flexible plane beam element is...

Balance and control of a rear-wheel steered speed-record recumbent bicycle

The goal of the Human Power Team from the TU Delft and the Free University of Amsterdam is to break the world speed record in unpaced cycling (Sam Whittingham, 133.28 km/h). The design of such a faired recumbent bicycle is a challenge. The Delft design, called VeloX (Human Power Team (2013)), is a fully-faired monocoque front-driven recumbent...

Curvature Manipulation of Photomasks - Enhancing the imaging performance of immersion lithography equipment

This thesis investigates the feasibility of a photomask curvature manipulator in immersion lithography systems.

Dynamics and Control of a Steer-by-Wire Bicycle

Already for some time, electronic enhancements regarding vehicle behavior has made its way into the aviation and automotive industry by the term "by-wire" technology. Electronic sensors and actuators are used to replace traditional mechanical systems in which software is used to operate the actuators in a way that is not possible with...

Bicycle Rider Control: Observations, Modeling & Experiments

Bicycle designers traditionally develop bicycles based on experience and trial and error. Adopting modern engineering tools to model bicycle and rider dynamics and control is another method for developing bicycles. This method has the potential to evaluate the complete design space, and thereby develop well handling bicycles for specific user...

Modeling Strategies for Electro-Mechanical Microsystems with Uncertainty Quantification

Microsystems are very small sensors and actuators, manufactured with the same technology as computer chips. Well known applications of these machines are the acceleration sensors in the Wii game console and the iPhone. At the micrometer length scales of microsystems the physical forces behave different when compared to devices operating in the...

Mind Your Step: Exploring aspects in the application of long accelerating moving walkways

Accelerating Moving Walkways (AMWs) are conveyor systems that accelerate pedestrians from a low speed at the entrance to a higher speed at the middle section, and then decelerate them to a low speed again at the exit. It is envisaged they can be a potential transport mode to fill the gap between short and moderate distance transport. However,...

Dynamica 2-B: Lecture Notes course wb1203

Lectures Notes (in Dutch), Faculty 3mE/Mechanical Engineering, TU Delft. Contents: Discrete systems with one degree-of-freedom; Discrete systems with two degrees-of-freedom; Discrete systems with multiple degrees-of-freedom; Dynamics of rotors; Exercises.

Dynamica 3-A: Lecture Notes wb1303

Lecture Notes for course wb 1303 Dynamica 3-A, Faculty 3me/Mechanical Engineering, TU Delft. Contents: Continuous systems; Dynamics of a reciprocating engine; Non-linear systems; Kinematics and dynamics of multi-body systems; Exercises.

Dynamics of belt systems

Numerical simulation of mechanisms and manipulator robots with flexible links and flexible joints

A Study of In-Plane Dynamics of Tires