Capacitive Sensor Interface Using an Inverter-Based Period Modulator

This thesis discusses the basic principles, circuit implementation and measurements of an inverter-based capacitive-sensor interface based on period modulation. The interface employs an inverter-based OTA and comparator to increase the current efficiency. Moreover, it applies new circuit techniques to reduce the die size and to reduce noise. A...

6-DoF Stage Position Measurement Concept for Microscopy with one 2D Position Sensitive Detector (PSD)

Background Interferometers and capacitance sensors were used to measure the motion of the 6-DoF ferrofluid planar bearing positioning stage designed by Max Cafe who was the master student graduated in 2014. The sensor costs almost 30,000 euro to achieve nanometer scale accuracy. However, in some biology applications, such as observation of...

A new LLJ model and its application to wind turbine power analysis

Low level jets (LLJs) are situations where wind speed maximums occurs close to the surface. Unfortunately, the influence of LLJs on wind turbine power production is still difficult and costly to quantify due to that the existing LLJ models are all time-based. The work that is done in this report addresses the research question should low level...

The public interior as project

The outcome of the graduation project is a precise and realistic individual proposal considered at all scales and containing a high level of detail. The design was made with regard to con- textual, social, architectural, structural, technological and environmental issues.

Culture complex, Westerpark, Amsterdam

A design method of combining bottom-up and top-down ideas, realizing a culture complex building.

Wideband High Power Doherty Amplifiers

Currently the Doherty Power Amplifier (DPA) is replacing the traditional Class B amplifier in base-station and broadcast applications, as such becoming the preferred choice of industry due to its simplicity and high efficiency performance. In spite of its success, so far practical DPA implementations can provide only a very limited RF bandwidth,...

Wake Dynamics Study of an H-type Vertical Axis Wind Turbine

Recent developments in wind energy have identified vertical axis wind turbines as a favored candidate for megawatt-scale offshore systems. Compared with the direct horizontal axis competitors they poss higher potentials for scalability and mechanical simplicity. The wake dynamics of an H-type vertical axis wind turbine is investigated using...

Research & Development of Mobile Research Tool

This master thesis describes an exploratory research and design process towards concepts that support consumer research to achieve the deeper information in an enterprise’s view. To understand the background of Winkle as well as the mobile platform, and get insight in the mobile behavior, three studies were carried out: Winkle internal research,...

A Policy Analysis Approach to Making Strategic Decisions for the Sustainable Development of Harbin Eco-corridor System

“The battle for sustainable development, for delivering a more environmentally stable and healthier world, is going to be largely won and lost in our cities.” Klaus Toepfer, Former Executive Director of United Nations Environment Programme said. "Over the past 50 years, humans have changed natural ecosystems more rapidly and extensively than in...

Walking in the disguise: Design a shopping trolley with hidden supports for older adults

Rollator is a walking aid for older adults, who realized that they need certain supports for health or mobility, however, most people still believe that it distinguishes them from the normal people How to design a new type of walking tool that are highly acceptable by everyone and lower the threshold it use it is the key problem of this project....

Design and Implementation of a Wireless Sensor Network Testbed

Wireless Sensor Network (WSN) is becoming a more and more popular research area since its emergence. Many WSN researches rely on practical experiments in real wireless networks. However, to setup and conduct such an experiment is always cumbersome and time-consuming. So in this thesis, we design and implement a WSN testbed to solve the problem...

Fatigue crack. growth threshold behaviour of Aluminum Alloy 5083: Measured by using two test methods