Ángel Valera Fernández

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SUMMARY This work is dedicated to the analysis of the application of active impedance control for the realisation of three objectives simultaneously: velocity regulation in free motion, impact attenuation and finally force tracking. At first, a brief analysis of active impedance control is made, deducing the value of each parameter in order to achieve the(More)
It is regretted that the originally published paper (Stanisic and Fernández 2009) contains an incorrect version of acknowledgements. The authors apologise for this oversight and the corrected version is reproduced here. Acknowledgements We would like to thank the R&D&I Linguistic Assistance Office, Universidad Politécnica de Valencia (Spain), for granting(More)
The aim of this research paper is to study the behaviour of a common used biopolymer (Poly(Lactic Acid) (PLA)) after several reprocesses and how two different types of additives (a melt strength enhancer and a nanoadditive) affect its mechanical and rheological properties. Systematic extraction of extrudate samples from a twin-screw compounder was done in(More)
A rapid development of industry and other activities and the increment of population in last years is origining a serious problem of environmental pollution. Advanced oxidation technologies are proving to be important contributions to the treatment of water and air to remove harmful and toxic substances. These methods are very important because can degrade(More)
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