Hybrid models of hydraulic systems for hardware-in-the-loop simulation. Part 2:...

• Author(s): J. A. Ferreira ; F. Gomes Almeida ; M. R. Quintas ; J. P. Estima de Oliveira
• Date: 2004
• Persistent ID: http://hdl.handle.net/10216/7129
• Origin: Repositório Aberto da Universidade do Porto
• Subject(s): Ciências Físicas; Física; Mecânica clássica; Dinâmica de fluidos; Hidráulica
• Document Type: Article
• Language: Portuguese

Description

The use of new control schemes for hydraulic systems has been the object of study during the last few years. A simulated environment is the cheapest and fastest way of evaluating the relative merits of different control schemes for a given application. Real-time simulation allows parametrization and test of the performance of real controllers. This paper describes the set-up of a real-time simulation platform to perform hardware-in-the-loop simulation experiments with the hydraulic models proposed in the companion paper (Part 1). A set of parametrization techniques are proposed for the semiempirical models of a valve-controlled hydraulic cylinder. Manufacturer’s data sheets and/or experimental measurements were used to adjust the model parameters. Some of these were directly calculated and others were estimated through the use of optimization techniques. Closed-loop control experiments were then performed on the real-time simulation platform and on the real system, in order to evaluate the real-time performance of the developed models.