不确定性高通量筛选系统的双子代数控制

Dioid-based control for high throughput screening systems with uncertainties

近年来,对于高通量筛选系统的控制,在确定性情形下已进行了不少工作,其中,双子代数框架下的控制策略执行相对更灵活,效率更高.然而,现有的输出反馈优化控制对性能指标期望系统行为还有特殊的构造要求须满足;而且,实际运行中存在有人工干预、设备维护、意外干扰、故障等带来的不确定性.对这两者考虑的缺失限制了目前高通量筛选系统自动控制的效率.为进一步提高这类新兴离散事件系统的控制效率,基于区间双子代数,将该输出反馈控制结构拓展到系统参数不确定的高通量筛选系统,使之对不确定性高通量筛选系统能自动产生优化控制.继而,将输出反馈与预处理补偿相结合.后者对指标的构造并无特殊要求.综合后的控制结构亦避免了原反馈结构下对性能指标构造的限制.最后通过不同实例说明了对不确定性高通量筛选系统应用该控制结构的方法和有效性.

In recent years, a lot of work has been done on control of high throughput screening systems (HTS) under certainty, among which, the implementation of control strategy under the framework of dioid is relatively more flexible and more efficient. However, for such output feedback optimal control strategy, a special structural requirement for the desired system behaviour still must be fulfilled;furthermore, in practice, there are uncertainties resulted from manual intervention, equipment maintenance, unexpected disturbance and fault. Lack of considerations of both restricts the efficiency of HTS automatic control. To further improve the control efficiency for this new class of discrete event systems, based on the corresponding interval dioid, the output feedback control structure is extended to HTS systems with parametric uncertainties, so that the optimal control can be automatically generated for HTS under uncertainty. The output feedback is then combined with a pre-compensator. For the latter, the structural restriction for the desired system behaviour is not necessary. And the synthesized control structure also avoids such restriction. Finally, different examples are given to demonstrate the application of the synthesized control structure and its effectiveness for HTS systems with uncertainties.