控制室50周年专刊序言

<正>2012年,中国科学院系统控制重点实验室(以下简称"控制室")迎来建室50周年.控制室的前身是1962年3月成立于中国科学院数学研究所的控制理论研究室,是我国最早从事现代控制理论研究的单位.50年来,控制室见证了我国现代控制理论的发展历程.控制室成立之初目标就很明确:发展控制理论,并为我国的国防现代化和国民经济建设服务.50年来,在关肇直、宋健、陈翰馥、郭雷等前后几代领导带领下,控制室在控制理论基础研究     

Robust Set Stabilization and Its Instances for Open Quantum Systems

We propose and discuss a novel concept of robust set stabilization by permissible controls; this concept is helpful when dealing with both a priori information of model parameters and different permissible controls including quantum measurements. Both controllability and stabilization can be regarded as the special case of the novel concept. An instance is presented for a kind of uncertain open quantum systems to further justify this generalized concept. It is underlined that a new type of hybrid control based on periodically perturbed projective measurements can be the permissible control of uncertain open quantum systems when perturbed projective measurements are available. The sufficient conditions are given for the robust set stabilization of uncertain quantum open systems by the hybrid control, and the design of the hybrid control is reduced to selecting the period of measurements.     

原子核自旋陀螺仪的基本原理

介绍了一种基于K-~3He comagetometer原理的新型核自旋陀螺仪.这种陀螺仪精度提高的空间大,因此对它的研究具有重要意义.在comagnetometer中,系统状态演化的方程较为复杂,在简化的Bloch绘景下,给出了comagnetometer的输出信号与陀螺仪转动角度的关系.最后,将系统状态演化的方程推广到量子滤波方程,通过连续测量和量子反馈控制的方法,达到提高系统的稳定性和测量灵敏度的目的.     

Probabilistic Remote Preparation of a Four-Particle Entangled W State for the General Case and for All Kinds of the Special Cases

We present a protocol for probabilistic remote preparation of a four-particle entangled W state.The quantum channel is composed of two partial entangled four-particle cluster states.We calculate the total successful probability and total classical communication cost required for the general case and for all kinds of the special cases,respectively.It is shown that for two maximally entangled four-particle cluster states,such a scheme for the general case has the total successful probability of 25%and only consumes the total classical communication of 1 bit,while this scheme for the special cases under certain conditions can possess successful probability of 50%or 100%,the required classical communication will only be 2 bits or 4 bits.Meantime,we give in detail all unitary transformations for the general case and for all kinds of the special cases,respectively.     

基于校正函数的一类具三角结构的非线性系统的自适应控制

１引言 考虑如下的具有二角结构的作线性系统ＬＰＴＳ（ｌｉｎｅａｒｌｙ　ｐａｒａｍｅｔｅｒｉｚｅｄ ｔｒｉａｎｇｕｌａｒｓｔｒｕｃｔｕｒｅ）．其中ｘ＝（ｘ１,．……ｘｎ）Ｔ０∈Ｒｎ为系统的状态,ｕ∈Ｒ为控制输入,θ∈Ｒｐ为未知常值参数向量,γｉ０及γｉ′,β′（ｘ）β０为已知的光滑非线性函数,γｉ０（０）＝０,γｉ′（０）＝０,β０（０）≠０;（ｉ＝１,…,ｎ）,对这样的系统,Ｄ．Ｓｅｔｏ,Ａ．Ｍ．Ａｎｎａｓｗａｍｙ和Ｊ．Ｂａｉｌｌｉｅｕｌ在［１］中进行了讨论,但是他们对同一参数用了多个估计,使得系…