1,720,959 research outputs found
Washout Filter Design For a Motorcycle Simulator
No full textMany motion base simulators have been developed in the last thirty years for many different types of vehicles. In order to make a simulation more realistic,linear accelerations and angular rates are exerted on the pilot by moving the platform on which the mock-up vehicle is located. This has to be accomplished without driving the simulator out of its workspace. The software component that is in charge of this is commonly referred to as washout filter.Washout filters have been widely investigated in the past, mainly in the field of flight simulators. In this article we present a washout filter designed for a motorcycle simulator. The solution is preliminary and follows, as a reference point, techniques previously adopted for large aircraft simulators. Differences between motorcycle and aircraft simulation are analyzed and a preliminary customized solution is proposed. The washout filter,which will be used to drive a motorcycle simulator, currently being built at PERCRO, has been tested off-line showing good results and will soon be tested on real riders
Head Centered Approach to Washout Filter Design for Motorcycle Simulators
No full textMany motion base simulators have been developed in the last
thirty years for many different types of vehicles. In order to make a simulation more realistic, linear accelerations and angular rates are exerted on the pilot by moving the platform on which the mock-up vehicle is located. This has to be accomplished without driving the simulator out of its workspace. The software component that is in charge of this is commonly referred to as washout filter. Washout filters have been widely investigated
in the past, mainly in the field of flight simulators. In this article we present a washout filter designed for a motorcycle simulator. The solution follows, as a reference point, techniques previously adopted for large aircraft simulators. However great importance is given to specific aspects of motorcycle dynamics. Sensors are used to determine the rider’s position on the motorcycle being their masses comparable. Moreover the washout location is considered on the rider’s head thus being movable. The washout filter, which is being used to drive the MORIS motorcycle simulator, located at Piaggio company headquarters in Pontedera, Italy, has been tested off-line showing good results and will soon be tested on real riders
Mechanical Design and Kinematic Optimization of a Novel Six-Degree-Of-Freedom Parallel Mechanism
No full text
The MORIS Motorcycle Simulator: An Overview
No full textMany motion based simulators have been developed in the last thirty years for many different types of vehicles. In order to make a simulation more realistic, linear accelerations and angular rates are exerted on the pilot by moving the platform on which the mock-up vehicle is located.
The purpose of this article is to present a 7 DOFs (vertical, lateral and longitudinal displacements, roll, pitch and yaw angles and steer) motorcycle simulator which has been realized in Pisa, Italy, in the framework of the Esprit project by a consortium composed by industrial partners (Piaggio and Humanware from Italy and HEAD acoustics from Germany) and by academic partners (Scuola Superiore S. Anna from Italy, Halmstad University from Sweden and University of Bochum from Germany).
Such project started in 1995 with the aim of developing a two-wheeled motorcycle simulator conceived as a tool for the designer to acquire data on motorcycle handling and stability at the design stage as well as to collect data about rider control behavior implications in motorcycle performances
Real-Time Deformation of Hand Movements and Virtual Environments Lighting
No full textSelected Video at IMAGINA 199
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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