Characterization and Modeling of a Proportional Value for Control Synthesis

Abstract

This paper presents a global characterization and an analytical model of the static flow stage of an electro-pneumatic proportional valve FESTO MPYE-5-M5-010-B. This study is useful for linear or nonlinear control synthesis in our application for medical robotics. Firstly, the experimental measurements are carried out using 3D graphs where a set of curves gives the output mass flow rate as a function of the electrical input of the electronic stage for different values of the output pressure. The exhaust and supply pressures, during these tests, are assumed to be constant. Moreover, 2D classical curves given by some constructors can be reconstructed, such as mass flow gain, pressure gain and mass flow characterization. Secondly, an approximation of the mass flow stage characteristics of this five-way proportional valve by a polynomial function is described. The model elaborated enables a good reproduction of the pressure gain and the global mass flow characterization curves to be obtained.

Control of air pressure inside an inflatable textile pocket of an active backrest cushion

“…It consists of a plunger which may attain different positions that are linearly proportional to the applied voltage signal (see for example (Rao and Bone, 2008) and (Wickramatunge and Leephakpreeda, 2013)). Modeling of the proportional valve considered in this study has already been discussed in the literature (Olaby et al, 2005;Gulati and Barth, 2007; Zilic et al, 2009;Zhang et al, 2013). However, dynamic behavior of its spool valve changes with each mark and application.…”

Simulation of an Instrumental Childbirth for the Training of the Forceps Extraction: Control Algorithm and Evaluation

“…And the mass flow rate sensibility coefficients with respect to the pressures p and the control u are deduced from the nonlinear global static characteristic of the FESTO servodistributor [22]:…”

Automatic childbirth procedures implanted on the BirthSIM simulator

“…The system under consideration is a linear inline double acting electropneumatic servo-drive using a single rod controlled by two five-port proportional valves. A global characterization [10] [11] of this electropneumatic proportional valve has been carried out to obtain an analytical model. In this case the nonlinear model has been linearized around an equilibrium set.…”