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Enhanced confidence control based on non-linear mathematics models of biological process in the urban wastewater treatment systems

城市污水处理系统中基于生物过程非线性数学模型的增强置信度控制

基本信息

批准号：
13555120
负责人：
OHMORI Hiromitsu
金额：
$ 8.58万
依托单位：
Keio University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

(1)For the first year to the second year, we established individual element technology such as making a practical modeling for wastewater treatment process, adaptive observer, and sensing technology.(2) For the last year, we have proposed the enhanced confidence control system. This last proposed control system is possible to meat the request of practical use, optimality, robustness, reliability, flexibility, and realization. This control system of activated sludge process consists of two layers of control systems, i.e., upper level control and lower level controller, The upper level controller optimizes the whole process, on the other hand, the lower level controller generates the control input locally.(3) In the upper level controller, we proposed two constructing methods. (3-1) The weight coefficients in a certain cost function are determined for the nonlinear-optimization problem, then it is successful in designing the control system that utility was kept. (3-2) we applied the extr … More eme control strategy for the activated sludge process. We succeeded in a method of forming of control system to do hold in extreme value of the cost function with on-line manner.(4) In the lower level controller, we proposed three constructing methods. (4-1) We evaluate the reliability of the water sensor of ammonia indicator and nitric acid indicators. Then the tuning method of PI control parameters is proposed. We did enforcement experiment by a pilot plant and examined the problem that should have been settled. (4-2) It is successful by introducing passivity into elucidation of positive system problem. (4-3) The new adaptive observer method is proposed, the total stability of this observer system is proven theoretically.(5) We proposed a reduced-order model of biological wastewater treatment process for the purpose of model-based control design of nitrogen and phosphorus removal. By perturbation technique with ASM2 model, we derive the lower order system whose response is as same as one of original system. Less

（1）第一年至第二年，我们建立了单个元素技术，例如为废水处理过程建立实用模型，自适应观测器和传感技术。(2)去年，我们提出了增强信心控制系统。最后提出的控制系统是可能的肉的实际使用，最优性，鲁棒性，可靠性，灵活性和实现的要求。活性污泥法控制系统由两层控制系统组成，上层控制器对整个过程进行优化，而下层控制器则在本地产生控制输入。(3)在上层控制器中，我们提出了两种构造方法。(3-1)针对非线性优化问题，确定了目标函数中的权系数，从而成功地设计了控制系统，保证了系统的实用性。(3-2)我们应用了extr ...更多信息活性污泥法的机电一体化控制策略。成功地提出了一种在线保持成本函数极值的控制系统构成方法。(4)在下层控制器中，我们提出了三种构造方法。(4-1)对氨指示剂和硝酸指示剂水传感器的可靠性进行了评价。提出了PI控制参数的整定方法。通过中试工厂的实施试验，对本应解决的问题进行了检验。(4-2)将无源性引入正系统问题的说明是成功的。(4-3)提出了一种新的自适应观测器方法，并从理论上证明了该观测器系统的全局稳定性。(5)提出了一种污水生物处理过程的降阶模型，用于基于模型的脱氮除磷控制设计。通过对ASM 2模型的摄动处理，得到了与原系统响应相同的低阶系统。少