Modeling and Simulation Advances in Fluid Power Motion Control Systems

摘要

As a manufacturer of hydraulic motion controllers we are often asked if our controller can synchronize axes within a few ten thousandths of an inch or guarantee accuracy to one or two thousandths of an inch. When this happens, we wonder if what the customer is really asking for is a guarantee that the hydraulic motion controller can cover for the customer’s own design flaws or overly optimistic specifications. The system doesn't have to be perfect-the motion controller can correct for most small non-linearities and changes in load-but the system design can't be fatally flawed. Like most engineering problems, there are price-for-performance tradeoffs, and the challenge is finding the best balance. To do that, one needs a way of evaluating the design’s performance and costs before a machine is manufactured. Mistakes that are found after the machine is built are often expensive and difficult to fix and can impact delivery or commissioning dates. Therefore, careful up-front planning is a must.