Please use this identifier to cite or link to this item:
|Title:||Electro-hydraulic proportional control of twin-cylinder hydraulic elevators|
|Citation:||Li, K., Mannan, M.A., Xu, M., Xiao, Z. (2001-04). Electro-hydraulic proportional control of twin-cylinder hydraulic elevators. Control Engineering Practice 9 (4) : 367-373. ScholarBank@NUS Repository. https://doi.org/10.1016/S0967-0661(01)00003-X|
|Abstract:||The large size of the cab of an electro-hydraulic elevator necessitates the arrangement of two cylinders located symmetrically on both sides of the cab. This paper reports the design of an electro-hydraulic system which consists of three flow-control proportional valves. Speed regulation of the cab and synchronization control of the two cylinders arc also presented. A pseudo-derivative feedback (PDF) controller is applied to obtain a velocity pattern of the cab that proves to be close to the given one. The non-synchronous error of the two cylinders is kept within ± 2 mm with a constrained step proportional-derivative (PD) controller. A solenoid-actuated non-return valve, i.e. a hydraulic lock, is also developed to prevent cab sinking and allow easy inverse-fluid flow. © 2001 Published by Elsevier Science Ltd.|
|Source Title:||Control Engineering Practice|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 17, 2018
WEB OF SCIENCETM
checked on Jun 27, 2018
checked on Jun 8, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.