Qin Zhang is an assistant professor at the University of Illinois at Champaign-Urbana developing a programmable electrohydraulic (EH) control valve. The new device consists of five proportional-flow control valves that are used with a hybrid control algorithm. Zhang and colleague Haibo Hu published a paper outlining their conclusions: They say it is technically feasible to integrate a programmable valve using five individually controlled proportional valves. It is important to obtain the characteristics of sub-valves before the integration, say Zhang and Hu. They also assert that the use of a simple logic control algorithm is sufficient for achieving programmable valve features such as open center, closed center, tandem center, and float center. For more information, call Zhang at (217) 333-9419 or visit www.uiuc.edu.
The new composites manufacturing innovation center is intended to be a source of grand challenges for industry, like the kind that got us to the moon under JFK. These aren't the words its new CEO Craig Blue used, but that's the idea and the vision behind the Institute for Advanced Composites Manufacturing Innovation (IACMI).
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.