针对由Petri网建模的离散事件系统，提出了一种新的控制器设计方法。控制器是基于有限容量库所的概念构造而成的，并使被控对象在给定的一组线性不等式约束下运行，而给定的线性不等式约束是定义在库所标识上的。控制器的综合利用了有限容量库所Petri网转换为（普通）无限容量库所Petri网的技术。针对约束的不同情况，给出了相应的Pteri网的控制器的设计方法。

Multi-objective optimization of a purified terephthalic acid (PTA) oxidation unit is carried out in this paper by using a process model that has been proved to describe industrial process quite well. The model is a semi-empirical structured into two series ideal CSTR models. The optimal objectives include maximizing the yield or inlet rate and minimizing the concentration of 4-carboxy-benzaldhyde, which is the main undesirable intermediate product in the reaction process. The multi-objective optimization algorithm is based on Neighborhood and Archived GA, proposed by the authors. The performance of NAGA is further illustrated by application to the title process.

The delay-dejpendent memoryless robust stabilisation problem for a class fo uncertain linear systems containing multiple time-dealys and a saturating actuator is considered. The uncertain time-delay sysstems under consideration are described by state differentail equations with time-varying unknown-but-bounded uncertain parameters and multiple time-delays in both state and control; the delays are assumed to be constant bounded but unkown. A new sufficient condition fir the existence fo a memoryless orbust stabilising control law is derived basedon the Lyapunov theorem and linear matrix in equality (LMI) approach. The results depend on the size of delays and are given in terms of several inear matriz inequalities. A numerical example is presented to illustrate the results botained.

The memoryless robust stabilization problem is studied for a class of uncertain linear dynamic systems with time-delyays in both state and control. The uncertain time-delay systems under consideration are described by state idfferental equations with timevarying unknown-but-bounded unceratin parameters. A suffficient condition for the existence of a memoryless robust controller is derived and two methods are presented for synthesizing robust control laws for uncertain time-delaysystems. One isto transform the robust control problem into a standared H∞ control problem via the equivalent system transfor mation, and thecontrol law can be obtainedby solving an algebraic Riccati equation (ARE). The other method is to transform the sufficient condition into a linear matrix inequality (LMI) problem and the control law can be obtained by solving the LMI. Finally, a numerical example ispresented to show the feasibility of the obtained results.