José Roberto Branco Ramos Filho
Institute of Engineering and Geosciences, Universidade Federal do Oeste do Pará, Santaråm, Pará, Brazil
Victor Juliano De Negri
LASHIP, Mechanical Engineering Department, Federal University of Santa Catarina, Florianópolis, SC, Brazil
Download article
http://dx.doi.org/10.3384/ecp1392a38Published in: 13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden
Linköping Electronic Conference Proceedings 92:38, p. 389-398
Published: 2013-09-09
ISBN: 978-91-7519-572-8
ISSN: 1650-3686 (print), 1650-3740 (online)
This paper presents a mathematical model for online fault detection on single solenoid servoproportional spool valves. The most common failures as well as its effects on the valve behavior are studied and took into account for the model representation. Servoproportional valves are used in industry; aerospace; and military fields. Some of these uses are critical-mission; where the valve must not fail without previous warning to prevent or mitigate financial losses; equipment damage; and risk to personnel. Even in less demanding applications; it is very useful to be able to quickly locate a failure in the hydraulic circuit; which is a task that may demand up to 80% of the time used in corrective maintenance. Total failure can readily be detected using the signals available on the valve electronics. However; since the spool positioning is on closed loop on these valves; incipient failures that can be overcome by the controllers cannot be easily detected. In this paper; an experimentally validated analytical model is used as a reference model such that the solenoid actual current can be compared with the theoretical current. Since that the valve hysteresis and pressure drop are considered; the model calculates maximum and minimum current values that correspond to an undamaged valve. Experimental results with a standard valve and a damaged valve show the effectiveness of the model for fault detection.
Hydraulics; proportional valves; fault detection.
[1] International Organization for Standardization; 1998; “ISO 10770-1 Hydraulic fluid power - Electrically modulated hydraulic control valves – part 1: test methods for four way directional flow control valves”; Switzerland.
[2] Bhojkar; A.; 2004; “Fault simulator for proportional solenoid valves”. Thesis (Master of Science); Department of Mechanical Engineering of the University of Saskatchewan; Saskatoon; Canada. 115p.
[3] Fenton; B.; Mcginnity; M.; Maguire; L.; September 2002; “Fault diagnosis of electronic systems using artificial intelligence”. IEEE Instrumentation & Measurement Magazine; 1094-6969-02. pp. 16-20.
[4] Bowers; M.; Arnold; D. Crew; A. W.; Gibson; R. J.; Ghrist III;W. D.; February 1989; “Diagnostic software and hardware for critical real-time systems”; IEEE Transactions on Nuclear Science; Vol. 36; No.1. pp. 1291-1298.
[5] Grimmelius; H. T.; Meiler; P. P.; Maas; H. L. M. M.; Bonnier; B.; Grevink; J. S.; van Kuilenburg; R. F.; April 1999; “Three state-of-the-art methods for condition monitoring”; IEEE Transactions on Industrial Electronics; vol. 46; no. 2. pp. 407-416.
[6] Parker Hannifin; 2005; “The handbook of hydraulic filtration”; Metamora; USA. 38 p.
[7] Vijlee; A.; January 2003; “Roll-off cleanliness of hydraulic systems”; Machinery Lubrication Magazine; no. 200301.
[8] Park; R. W.; August 1997; “Contamination control – a hydraulic OEM perspective”; Workshop on Total Contamination Control Centre for Machine Condition Monitoring; Monash University. 18 p.
[9] Merrit; H. E.; 1967; “Hydraulic control systems”; New York: John Wiley and Sons. 368p.
[10] Tessman; R. K.; Hong; I. T.; 1998; “Contamination control of aircraft hydraulic systems”; Stillwater: FES/BarDyne Technology Transfer Publication; no.10.
[11] Doddannavar; R.; Barnard; A.; 2005; “Practical hydraulic systems: operating and troubleshooting for engineers and technicians”. London: Elsevier. 232p.
[12]Parker Hannifin; June 1999; “Tecnologia hidráulica industrial”; M2001-1 BR; Jacareí; Brazil. 158 p.
[13]ATOS Electrohydraulics; 2006; “KT Master catalog – KT06/E”. Italy.
[14] Atherton; B.; 2007; “Discovering the root cause of varnish formation – the hidden issues beyond heat”; Practicing Oil Analysis Magazine; Issue 200704; Noria Corporation; Tulsa; Oklahoma; EUA. pp. 22-25.
[15] Fey; C.; 1987; “Identifying Component Wear through Metallurgical Analysis”; Proceedings of the 42nd National Conference on Fluid Power; Chicago; Illinois; USA; pp. 221-232.
[16]Ramos Filho; J. R. B.; 2009; "Análise teórico-experimental de falhas em válvulas direcionais servoproporcionais" Dissertation (Master in Mechanical Engineering) - Universidade Federal de Santa Catarina; Florianópolis; Brazil. 138 p.
[17] Linsingen; I. v.; 2003; “Fundamentos de sistemas hidráulicos” 2. ed.; Florianópolis: Editora da UFSC. 399 p.
[18] Stringer; J. D.; 1976; “Hydraulic Systems Analysis”; Macmillan. 192 p.
[19] Johnson; J. L; “Design of Eletrohydraulic Systems for Industrial Motion Control”. Parker Hannifin. USA; 1995.
[20] Furst; F. L.; 2001; “Sistematização do projeto preliminar de circuitos hidráulicos com controle de posição”. Dissertation (Master in Mechanical Engineering) – Universidade Federal de Santa Catarina; Florianópolis; Brazil.132 p.
