Use PWM for pressure compensation from a fixed-displacement pump
Aug. 2, 2012
Design and build your own low cost, but efficient constant-pressure power units for both servo and conventional applications. Say goodbye variable-displacement pumps.
This is a detailed engineering study of a pressure compensated system that uses a fixed-displacement pump, but no relief valves. It is as efficient as a conventional pressure-compensated pump. You can read about the very complete test results, but more importantly, you can learn all you need to design and build your own low cost, but efficient constant-pressure power units for both servo and conventional applications. Goodbye, variable-displacement pumps.
ISBN 097022591; 128 pages, soft bound, $39.95
Click here for more information or to order from the H&P Bookstore.
In a departure from conventional wisdom, motion control can be implemented to increase production rate and product quality and consistency—all at the same time.
Newcomers to medical device design may think pressure and flow rate are sufficient parameters whenselecting a pump. While this may be true in some industrial applications, medical...
Variable volume pumps, also known as precision dispense pumps, are a positive displacement pump that operates by retracting a piston to aspirate a fluid and then extending the...
Acheck valve, a non-return or one-way valve, is a mechanical device that allows a gas or liquid to flow freely in one direction while preventing reverse flow in the opposite ...
Engineers tasked with managing fluid flow talk about both holes and calibrated orifices, but they are two distinct entities. A hole can be any opening, but a calibrated orifice...