Suppression of hydraulic transients for desalination plants based on active control synthesis

被引：0
作者：
Hong Phuc B.D. [1 ]
You S.-S. [2 ]
Kim H.-S. [3 ]
Lee S.-D. [4 ]
机构：
[1] Department of Mechanical Engineering, University of Tulsa, Tulsa, 74104, OK
[2] Division of Mechanical Engineering, Korea Maritime and Ocean University, Busan
[3] Division of Logistics, Korea Maritime and Ocean University, Busan
[4] Division of Navigation and Information Systems, Mokpo National Maritime University, Jeollanam-do, Mokpo
来源：
Water Science and Technology: Water Supply | 2021年 / 21卷 / 04期
关键词：
Hydraulic transients; Reverse osmosis; Sliding mode control; Water hammer; Water quality;
D O I：
10.2166/WS.2021.032
中图分类号：
学科分类号：
摘要：
This paper proposes a control strategy to stabilize a reverse osmosis desalination system against hydraulic shocks with enhancing productivity and sustainability. First, the effects of hydraulic transients on water quality have been reviewed. The transient waves are approximated by sinusoidal functions so that their effects are incorporated into the controlled system as external disturbances. Next, the active control is implemented based on the adaptive super-twisting (STW) sliding mode control (SMC) algorithms. Then, the robust performance is guaranteed whenever the sliding variables reach the sliding surfaces in finite time despite disturbances. The STW SMC scheme is to eliminate the chattering problems for protecting the valves and to improve the convergence precision for water production. The control gains are adaptable to enable formation of an effective controller for dealing with large disturbances such as water hammer during desalination process. The simulation results reveal the superior performances on controlling water product, while eliminating shock waves. Especially, the effect of hydraulic shocks has been dramatically attenuated, hence the plant components are protected to avoid fracture. Finally, the robust stability and performance of the desalination plants are guaranteed against large disturbances to ensure the population with quality water as well as system sustainability. © 2021 The Authors.
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页码：1552 / 1566
页数：14
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