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Shaking table control via real-time inversion of hydraulic servoactuator linear state-space model
Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering ( IF 1.6 ) Pub Date : 2021-04-05 , DOI: 10.1177/09596518211007294
José Ramírez-Senent 1 , Jaime H García-Palacios 1 , Iván M Díaz 1
Affiliation  

In this work, a Model-Based Control method for a single horizontal degree of freedom shaking table is presented. The proposed approach relies on the real-time inversion of a previously identified linear state-space model of the hydraulic servoactuator which drives the table. The inputs to the model are the control command and the force exerted on servoactuator rod. The latter contains all the relevant information related to the external actions acting on the servoactuator, thus making control system performance independent from the specimen with which the table is loaded and enabling it to cope with specimen non-linear behavior and eventual external forces exerted on it. A parallel proportional integral derivative controller, which accounts for non-modeled dynamics and a feedback linearization scheme, aimed at minimizing servovalve flow non-linearity, complement the previous architecture. The effectiveness of the method has been assessed numerically. According to the simulation results, the performance of the proposed technique appears quite promising; however, several factors must be carefully considered to achieve successful actual implementation.



中文翻译:

液压伺服执行器线性状态空间模型实时反演的振动台控制

在这项工作中,提出了一种用于单水平自由度振动台的基于模型的控制方法。所提出的方法依赖于驱动平台的液压伺服致动器的先前确定的线性状态空间模型的实时反演。模型的输入是控制命令和作用在伺服执行器杆上的力。后者包含与作用在伺服执行器上的外部动作有关的所有相关信息,从而使控制系统的性能独立于加载工作台的样本,并使其能够应对样本的非线性行为以及最终施加在其上的外力。并行比例积分微分控制器,它考虑了非模型动力学和反馈线性化方案,旨在最小化伺服阀流量的非线性,是对先前架构的补充。该方法的有效性已通过数值评估。根据仿真结果,所提出技术的性能似乎很有希望。但是,要成功地成功实施,必须仔细考虑几个因素。

更新日期:2021-04-05
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