contributor author | S. R. Goldstein | |
contributor author | H. H. Richardson | |
date accessioned | 2017-05-09T00:08:09Z | |
date available | 2017-05-09T00:08:09Z | |
date copyright | June, 1968 | |
date issued | 1968 | |
identifier issn | 0098-2202 | |
identifier other | JFEGA4-27314#143_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/127156 | |
description abstract | A novel approach to gas servo design is presented which provides closed-center operation while eliminating close clearance sliding seals and elastic members. Pulse-length modulated pressure waves having zero quiescent pulse width are used to actuate a new type of switching valve termed a “floating flapper disk.” Signal generation and modulation as well as power-level flow control are shown to be possible using this novel valve. System performance is discussed and compared with that of an equivalent linear servo. A prototype system fabricated to demonstrate feasibility is described. The valving concepts described are adaptable to digital, bang-bang, and optimally switched fluid control systems. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | A Differential Pulse-Length Modulated Pneumatic Servo Utilizing Floating-Flapper-Disk Switching Valves | |
type | Journal Paper | |
journal volume | 90 | |
journal issue | 2 | |
journal title | Journal of Fluids Engineering | |
identifier doi | 10.1115/1.3605072 | |
journal fristpage | 143 | |
journal lastpage | 151 | |
identifier eissn | 1528-901X | |
keywords | Servomechanisms | |
keywords | Valves | |
keywords | Disks | |
keywords | Flow control | |
keywords | Signals | |
keywords | Waves | |
keywords | Engineering prototypes | |
keywords | Clearances (Engineering) | |
keywords | Design | |
keywords | Fluid control systems AND Pressure | |
tree | Journal of Fluids Engineering:;1968:;volume( 090 ):;issue: 002 | |
contenttype | Fulltext | |