Advanced Controller Design: Case Studies

Author(s):  
Shunji Manabe ◽  
Young Chol Kim
Author(s):  
Hanseung Woo ◽  
Kyoungchul Kong

Safety is one of important factors in control of mechatronic systems interacting with humans. In order to evaluate the safety of such systems, mechanical impedance is often utilized as it indicates the magnitude of reaction forces when the systems are subjected to motions. Namely, the mechatronic systems should have low mechanical impedance for improved safety. In this paper, a methodology to design controllers for reduction of mechanical impedance is proposed. For the proposed controller design, the mathematical definition of the mechanical impedance for open-loop and closed-loop systems is introduced. Then the controllers are designed for stable and unstable systems such that they effectively lower the magnitude of mechanical impedance with guaranteed stability. The proposed method is verified through case studies including simulations.


Author(s):  
Erik M. W. Kolb ◽  
Jonathan Hey ◽  
Hans-Ju¨rgen Sebastian ◽  
Alice M. Agogino

Metaphors have successfully been used by new product development and design teams to help frame the design situation and communicate new products to stakeholders. Yet, the process of finding a compelling metaphor often turns upon stumbling upon it or a flash of insight from a team member. We present Meta4acle: a Metaphor Exploration Tool for design that suggests possible metaphors to make the process more one of ‘seeking out’ than ‘stumbling upon’ an effective metaphor. The tool takes data about the project in the form of a title, domain and key associations required of the metaphor and returns suggestions from a database of possible metaphor sources. We built a Meta4acle prototype and evaluated it with positive results for three existing design case studies. We present plans for its full implementation and evaluation.


2021 ◽  
Author(s):  
◽  
Samantha Erickstad

<p>This research explores the significance of the stair as a spatial and symbolic architectural experience. The stepped form integrated with architecture. The stair is an integral feature of architecture which has the potential to be specifically designed to enhance space and create particular experiences. A stair is not only a functional object, but a medium for design. Metaphorical staircases are absent in contemporary architecture as a loss of meaning has resulted in monotonous designs devoid of figurative or poetic significance. The staircase has been a fundamental component of architecture since Neolithic times, however has recently been neglected. The stepped form has represented many themes including hierarchy, transcendence, or authority. In contrast, the contemporary staircase has embraced pragmatics. Safety restrictions, efficiency, and budget constraints, result in disregard for aesthetics and meaning. Film provides a behavioural setting in which to analyse how people move, behave, interact, and experience staircases. A range of films will be analysed to identify techniques for meaningful stair design. The influence of surreal qualities will also be determined to enhance an experience. Surreal imagery offers the opportunity to create dreamlike space, activating the subconscious. The metaphoric connotations of staircases will be explored through six research categories; the stair as Symbolic, Illusive, Transitional, Kinetic, Psychological, and Iconic. Design case studies will then investigate the intersection of the staircase as architecture, filmic representation, and surreal experience. The stepped building Casa Malaparte in Italy acts as a reference model for the successful integration of these concepts. With influence of these themes, the staircase can once again become widely acknowledged as architecture.</p>


Author(s):  
Fabio Maroldi ◽  
Nicolò Colnaghi ◽  
Fabio Vanerio ◽  
Valerio Levati

Author(s):  
Qinyu Li ◽  
Peter Tolmie ◽  
Anne Weibert ◽  
Marén Schorch ◽  
Claudia Müller ◽  
...  
Keyword(s):  

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