Accuracy is clearly an important feature of PKM. Still it is difficult to evaluate what will be the influence of the sensor errors on the positioning errors except at one particular pose. We present a method that allow us, provided an analytical form of the inverse jacobian matrix of the robot, to estimate safely if the positioning errors may exceed some given thresholds over a given workspace ...

In many common interactive scenarios, participants lack information about other participants, and specifically about the preferences of other participants. In this work, we model an extreme case of incomplete information, which we term games with type ambiguity, where a participant lacks even information enabling him to form a belief on the preferences of others. Under type ambiguity, one canno...

Wang Gao 1,2, Chengfa Gao 1, Shuguo Pan 3,*, Xiaolin Meng 2 and Yan Xia 3 1 School of Transportation, Southeast University, Nanjing 210096, China; [email protected] (W.G.); [email protected] (C.G.) 2 Nottingham Geospatial Institute, The University of Nottingham, NG7 2TU Nottingham, UK; [email protected] 3 School of Instrument Science and Engineering, Southeast University, Nanjing 210...

This paper presents a novel method based on screw theory for the analysis of positioning accuracy in parallel manipulators with joint clearances. A general method is introduced, and a new analytical procedure is formulated which allows to determine analytically a suboptimal estimation of the worst case condition for positioning accuracy. Moreover this procedure can determine exactly the worst-c...

Solar radiation models for predicting the average daily and hourly global radiation, beam radiation and diffuse radiation are reviewed in this paper. Seven models using the Ångström– Prescott equation to predict the average daily global radiation with hours of sunshine are considered. The average daily global radiation for Hong Kong (22.3 N latitude, 114.3 E longitude) is predicted. Estimations...