Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Giovanni Mimmi"'
Publikováno v:
Control Engineering Practice. 19:1087-1098
This paper proposes the use of Model Predictive Control (MPC) to control a fast mechanical system. In particular an MPC strategy is applied to a laboratory flexible arm to perform a fast positioning of the end-effector with limited oscillations durin
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 198:2218-2224
This paper introduces an original analytical procedure for the computation of the planar curve in meshing with a general two dimensional curve. Considering a planar gear mechanism with a constant transmission ratio, in this work a general expression
Publikováno v:
International Journal of Mechanics and Materials in Design. 5:61-77
In this paper, the motion input pre-shaping, applied to flexible manipulators for space applications, is analyzed in terms of sensitivity and robustness to parameters uncertainties. The special environment of space operations and the project specific
Autor:
Giovanni Mimmi, Paolo Pennacchi
Publikováno v:
International Journal of Solids and Structures. 38:2009-2023
The interest in the design of manipulators for space operations with a light structure has grown meaningfully in comparison with rigid manipulators, even if these flexible manipulators are unavoidably characterized by a nonnegligible structural flexi
Autor:
Paolo Pennacchi, Giovanni Mimmi
Publikováno v:
Engineering Failure Analysis. 8:1-13
Since the membrane has to separate the process fluid from the oil circuit in metering diaphragm pumps, it is the critical component of these machines. Sometimes, depending on the operating conditions, the membrane may crack and it is necessary to dis
Publikováno v:
International Journal of Fluid Power. 2:23-31
In this paper a theoretical study is presented about the possibility of reducing the quasi-impulsive load components, which act on the rotors of the three-screw pumps in the rotational axial direction. These forces can be related, on the basis of pre
Autor:
Paolo Pennacchi, Giovanni Mimmi
Publikováno v:
Mechanism and Machine Theory. 35:477-490
Many contributions regarding internal gear theory exist in literature. They mainly consider the problem of undercutting by means of analytical methods applied to specific and limited cases. The present paper deals with a general method showing the an
Autor:
Paolo Pennacchi, Giovanni Mimmi
Publikováno v:
Journal of Mechanical Design. 123:468-472
The aim of this paper is a detailed analysis of a particular mechanism with variable piston stroke. This crank mechanism is presently applied to metering pumps, because it allows the piston stroke to be adjusted in length and permits the pump flow to
Autor:
Paolo Pennacchi, Giovanni Mimmi
Publikováno v:
Scopus-Elsevier
The instantaneous variation of pressure loads acting on the rotors of positive displacement rotary blowers may produce vibrations and noise that in some case produce the failure of the machine and of the piping. In a previous paper the authors determ
Autor:
Paolo Pennacchi, Giovanni Mimmi
Publikováno v:
Journal of Mechanical Design. 120:581-588
In the present paper the loads, usually modeled as a force and a moment, on the rotors of a three screw pump have been analyzed. These loads, due to the pressure of the working fluid, are periodical, so their actions on the rotors vary. The calculati