PRESSURE TRACKING CONTROL OF A DOUBLE RESTRICTION PNEUMATIC SYSTEM PASCAL BIGRAS, TONY WONG and RUXANDRA BOTEZ

Modified feedback linearization controller for Pneumatic System

This paper presents an approach to design a nonlinear controller for a pneumatic cylinder system for which the connection port comprises a non-negligible restriction. The pressure chamber of this system is difficult to control because the servo valve and the connection port form a double restriction. This double restriction causes a singularity in the feedback linearization controller. To avoid...

A software application for visualizing and understanding hydraulic and pneumatic networks

Hydraulic and pneumatic networks are highly nonlinear and difficult to analyze. This paper presents a software application designed to help students visualize and understand fluid systems' dynamic behaviors. The application uses a combined bond graph and singular perturbation approach for system equation formulation. A standard iterative and adaptive integrator provides online numerical solutio...

Fuzzy Logic Control of a Smart Actuation System in a Morphing Wing

Structured Optimal Controller Design Using Bmi Formulation

In this paper, a BB algorithm is used to designed structured controller that minimizes a matching model criteria. This non convex optimization problem is formulated as a BMI problem with additional variables allowing lower and upper bound estimation by LMI subproblems. A reduction of the additional variables is proposed to reduce the computation time. To demonstrate the effectiveness of the app...

Position Control of a Pulse Width Modulated Pneumatic Systems: an Experimental Comparison

In this study, a new adaptive controller is proposed for position control of pneumatic systems. Difficulties associated with the mathematical model of the system in addition to the instability caused by Pulse Width Modulation (PWM) in the learning-based controllers using gradient descent, motivate the development of a new approach for PWM pneumatics. In this study, two modified Feedback Error L...