MELISSA: Global control strategy of the artificial ecosystem by using first principles models of the compartments
MELISSA: Global control strategy of the artificial ecosystem by using first principles models of the compartments
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DOI：
10.1016/s0273-1177(99)00490-1
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发表时间：
1999-01-01
期刊：
影响因子：
--
通讯作者：
Lasseur, C
中科院分区：
文献类型：
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作者：
Fulget, N;Poughon, L;Lasseur, C
Melissa是一种以微生物为基础的生态系统，被设想为一种工具，用于了解人工生态系统的行为，并为未来长期空间任务的生物生命支持系统开发技术。梅丽莎的驱动因素是从废物(粪便、尿素)中回收氧气和可食用生物质。由于其固有的不稳定性和载人飞行的安全要求，开发了一种重要的控制策略来引导该系统并优化其循环性能。这是一种分级控制策略。每个Melissa车厢都有其本地控制系统，并考虑到其他车厢的状态和全局所需的功能点，上层确定每个车厢的设置点。所开发的方法基于每个隔室的第一原理模型(物理化学方程、化学计量学、动力学速率等)。这些模型被用来开发该系统的全球模拟器(以便研究全球功能)。它们也被用于控制策略，这是一种基于非线性预测模型的策略。本文提出了从舱室级到整体回路控制策略的一般方法。最后给出了部分仿真和实验结果。(C)1999年空间研委会。爱思唯尔科学有限公司出版。
MELISSA is a micro-organisms based ecosystem conceived as a tool for understanding the behaviour of artificial ecosystems, and developing the technology for a future biological life support system for long term space mission. The driving element of MELISSA is the recovering of oxygen and edible biomass from waste (faeces, urea). Due to its intrinsic instability and the safety requirements of manned missions, an important control strategy is developed to pilot this system and to optimize its recycling performance. This is a hierarchical control strategy. Each MELISSA compartment has its local control system, and taking into account the states of other compartments and a global desired functioning point, the upper level determines the setpoints for each compartment. The developed approach is based on first principles models of each compartment (physico chemical equations, stoichiometries, kinetic rates,...). Those models are used to develop a global simulator of the system (in order to study the global functioning). They are also used in the control strategy, which is a non linear predictive model based strategy. This paper presents the general approach of the control strategy of the loop from the compartment level up to the overall loop. At the end, some-simulation and experimental results are presented. (C) 1999 COSPAR. Published by Elsevier Science Ltd.