Design of a tracking controller of a siso system of pneumatic servopositioning

Abstract

Pneumatic systems have many advantages, such as simplicity, reliability, low-cost, long life, etc. making them attractive for rapid development and widespread application, but the complexity of the airflow through the valve port and the friction between the cylinder and piston make it difficult to establish an exact mathematical model and to control the pneumatic system with high precision. Experiments were conducted with a 25 mm bore rod-less pneumatic cylinder and a 5/3 way proportional control valve. In this contribution, I propose a nonlinear robust tracking control strategy to solve the tracking problem of the servo pneumatic positioning system. The approach is novel in the sense that it takes into account the nonlinearities inherent to pneumatic servo positioning systems and considers position, velocity and pressure differences in the chambers of the pneumatic cylinder as feedback states. The suggested control strategy is implemented in simulation and on the real system. Experimental results from an implementation on a test ring show a high position tracking control performance.

Diseño de un Control Regulador para un Sistema de Servo-Posicionamiento Neumático

“…(Gyeviki, Tóth, & Rózsahegvi, 2004) presentaron una estrategia de control por modos deslizantes y su aplicación en un sistema de posicionamiento servo-neumático. (Ramírez, 2018) desarrolló una novedosa estrategia de control de seguimiento para el sistema de servo-posicionamiento neumático.…”

Research regarding use of pneumatic linear actuator

“…In table 4 below are given some important actuators used in the second electro-pneumatic circuit, [7]. 4.…”