Comparison of Control Strategies for Aircraft Bleed-Air Systems. Issue 1 (July 2017)

• Record Type: Journal Article
• Authors: Pollok, Alexander; Casella, Francesco
• Is Part Of: IFAC-PapersOnLine. Volume 50:Issue 1(2017)
• Page Start: 14194
• Page End: 14199
• Publication Date: 2017-07
• Subjects: Friction -- Stiction -- Compensation -- Limit Cycles -- Modelica -- Pistons -- Modelling -- Oscillation -- Pneumatic -- Valves; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2017.08.2087
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: Bleed-air systems in passenger aircraft are often prone to limit cycle oscillations. Tuning of such systems makes additional flight-tests necessary, generating large expenses. In this paper, several control approaches to improve the performance of bleed-air systems are compared. These approaches combine a base-controller with stiction-compensation techniques. The different approaches are implemented, optimized and evaluated using a high-fidelity bleed-air system model, described in the equation-based modelling language Modelica. Results indicate that interaction between different valves should be reduced as much as possible. If a suitable base control approach is chosen, the influence of a superimposed stiction compensation technique seems to be small.