Some Experiences with Expert Systems for the Design, Monitoring and Maintenance of Hydraulic Circuits 901641

In much heavy industrial equipment, power transfer is primarily provided by a hydraulic system. Reliable operation of a hydraulic circuit can only be ensured through proper design, effective maintenance and continuous monitoring. Each of these areas requires the expertise of well-trained and experienced individuals. Unfortunately such individuals are not always available. However, the recently introduced technology of “expert” or “knowledge-based” systems can make these individuals' expertise available in the form of a computer program.
As part of a long term project in the application of expert systems to hydraulic circuit design, a prototype program has been developed which can successfully configure a variety of circuits including multiple load and add-on circuits. This is currently being expanded to include sequenced circuits, steady-state circuit analysis, which would include component sizing, and dynamic analysis. Another of the authors' current projects is to examine the feasibility of developing an “introspective machine” where on-line condition monitoring is coupled with an expert system to assess the health of a hydraulic system and advise the user of any potential problems, breakdowns etc. Recently a small demonstration program has been written to demonstrate the feasibility of producing an expert system for the fault diagnosis and troubleshooting of the hydraulic system of a mining machine. This paper will summarize the authors' work in the application of expert systems to these three areas.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 40% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.