The Formation Control of Multi-agent Systems on a Circle

This paper investigates the formation control of a class of multi-agent systems moving on a circle, whose topology is a cyclic graph, and presents several new results for the following two cases: Case I, the agents with single-integrator kinematics,and Case II, the agents with double-integrator kinematics. Firstly,for Case I, two control protocols are proposed under which the multiagent systems keep a uniformly-spaced formation. Secondly,we study Case II, and a control protocol is designed for this case, then the stability of the formation is proved. Finally, three simulations are studied by using our presented results. The study of illustrative examples with simulations shows that our results as well as designed control protocols work very well in studying the formation control of this class of multi-agent systems.

区域创新网络关键运行机制的系统循环图设计

尽管对于区域创新网络的理论和实证研究已取得了一定的发展,但从动态角度对区域创新网络内部各因素相互关系的研究仍然匮乏。根据区域创新网络内各个行为主体关系等,提出了包含自主创新机制、互动创新机制、资源流动与优化配置机制在内的区域创新网络关键运行机制体系,并引入"系统思考",设计了三个关键运行机制的系统循环图,指出了激发其良性循环的关键驱动力,并相应提出了有效的建议。

m<50时完全二部图K_(n,n)的循环m-圈分解

设Kn,n表示每部分具有n个顶点的完全二部图,本文利用差集的方法来构造Kn,n的循环m-圈分解,讨论了30<m<50时的所有整数的循环m-圈分解的存在性,并最终给出了当m<50时,Kn,n存在循环m-圈分解的充分必要条件.

m≡0(mod8)时完全二部图K_(n,n)的循环m-圈分解

研究完全二部图Kn,n的循环m-圈分解的存在性问题.利用差的方法构造完全二部图Kn,n的循环m-圈分解的初始圈.对于m≡0(mod8)且m≥8这种情况,证明当n≡0,m/2,m,3m/2(mod2m)时完全二部图Kn,n存在循环m-圈分解;对于m≡0(mod8),m≥8且m/4无平方因子这种情况,证明了完全二部图Kn,n存在循环m-圈分解的充分必要条件是n≡0,m/2(modm).

循环的或1-旋转的7,9,11,13-太阳系的存在性

设整数k>2,k-太阳图S(Ck)是一个由k-圈图的每个顶点向外伸出一条悬挂边得到的图.v阶k-太阳系是完全图Kv到k-太阳图的一个分解.如果v阶k-太阳系存在一个v阶自同构,则称该k-太阳系是循环的;如果v阶k-太阳系存在一个包含一不动点和一长为v-1轮换的自同构,则称该k-太阳系是1-旋转的.应用差的方法直接证明了当v≡1(mod 4k)时,存在v阶循环的k-太阳系;当v≡0(mod 4k)时,存在v阶1-旋转的k-太阳系,其中k=7,9,11,13.