Integral sliding mode controller for pressure stabilization in hydrodynamic system with hydraulic accumulator
Integral sliding mode controller for pressure stabilization in hydrodynamic system with hydraulic accumulator
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DOI：
10.1109/icarcv.2012.6485260
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
Yong Chen;Lu Cao;Yiyong Huang;Xiaoqian Chen
中科院分区：
文献类型：
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作者：
Yong Chen;Lu Cao;Yiyong Huang;Xiaoqian Chen
建立了一种带加压罐的流体动力系统模型，用于流量计的校准，该系统在实验室应用中比水塔系统具有优异的优势，在工业校准中得到广泛应用；然而，该系统面临着流体流动稳定和压力噪声吸收的挑战。以往处理此类问题的方法是基于复杂的机械方法，难以掌握，本文提出了一种基于积分滑模控制策略的新方法，设计了一种反馈控制器，即使在系统不确定性范围内也能实现液压的渐近鲁棒稳定。研究了液压蓄能器吸收非定常流体流动产生的压力脉动和滑模控制产生的抖振。仿真结果表明了该控制器在系统不确定性和蓄能器对压力脉动的吸收下的有效性和鲁棒性。此外，本文还对控制设计中的滑模参数进行了分析。
A hydrodynamic system with pressurized tank is modeled for flow meter calibration which has excellent advantages in laboratory application over the water-tower system, broadly used in the industrial calibration application; however, such system meets challenges of fluid flow stabilization and pressure noise absorption. While previous approach to deal with such problems is based on complicated mechanical method which is hard to master, present paper contributes a new novel method based on integral sliding mode control strategy to design a feedback controller to asymptotically and robustly stabilize the hydraulic pressure even within the system uncertainty and, moreover, hydraulic accumulator is investigated to absorb the pressure pulsation by unsteady fluid flow as well as the chattering of the sliding mode control. Simulation shows the validity and robustness of the proposed controller within the system uncertainty as well as the accumulator absorption of pressure pulsation. Moreover, analysis of the sliding mode parameter is addressed in this paper which is important in control design.