运动光电成像跟踪系统视轴稳定伺服控制设计研究

在对运动光电成像跟踪系统瞄准线视轴稳定单速度环伺服控制结构分析的基础上，提出一种由速度内环和稳定外环组成的串级伺服控制结构，其中速度内环和稳定外环分别由直流测速机和速率陀螺构成闭环反馈．内环调节器采用由模拟硬件实现的有源PI校正，稳定外环采用积分自调整PID复合控制策略．理论分析表明该方法能够将系统抗摩擦力矩干扰和隔离载体扰动功能由内、外速度环分开实现，系统抗干扰性、参数变化敏感性等较单环控制有较大提高．在稳定跟踪模拟转台上的仿真及测试实验显示基于DSP实现的串级控制能够更有效地隔离系统中各种扰动影响，控制性能优于单速度环控制，验证了所采用控制方式的有效性．     

高分辨率平面测试仪的研制

在实际应用中，平面测试仪主要用于工件的微米级测试，从而检验工件是否合格。高分辨率和高稳定度是平面测试仪研制的两大关键技术。采用分辨率扩展的方法可以提高分辨率；同时利用单片机和复杂可编程逻辑器件（CPLD）设计产生高稳定度的信号源，提高了系统的稳定度。内容包括工作原理，测试步骤和硬件设计，并介绍了提高精度的措施，主要由位移传感器，高稳定度信号源，单片机，信号处理单元四部分组成，具有高稳定度，高分辨率，低成本，操作简便的特点，目前已在重庆受拓利检测仪表有限公司正式投入使用。     

广义非线性交联大系统的鲁棒模糊分散控制

利用广义T S模糊模型对广义非线性交联大系统进行了鲁棒控制研究·首先 ,对广义非线性交联大系统建立模糊模型·然后 ,在系统可解条件下 ,给出了模糊分散控制器的设计方法 ,分析其考虑建模误差时的鲁棒稳定性 ,给出基于LMI的闭环系统鲁棒稳定的充分条件·进而 ,应用模糊规则及权重的性质得到基于LMI优化技术的低保守性的鲁棒模糊分散控制器设计方法·最后 ,算例说明了控制器的设计步骤和有效性·     

Decentralized adaptive generalized predictive control for structural vibration

A decentralized generalized predictive control (GPC) algorithm is developed for strongly coupled multi-input multi-output systems with parallel computation. The algorithm is applied to adaptive control of structural vibration. The key steps in this algorithm are to group the actuators and the sensors and then to pair these groups into subsystems. It is important that the on-line identification and the control law design can be a parallel process for all these subsystems. It avoids the high computation cost in ordinary predictive control,and is of great advantage especially for large-scale systems.     

A new method for partition of interaction energy. Relation between stabilization energy and orbital mixing

A new method for partition of interaction energy is proposed. The scheme given here easily connects the calculated stabilization energy with the orbital mixing in analyzing orbital interactions of molecules. The method can reveal the relation between the change of electron distribution and stabilization energy. As an example, orbital interaction energies are estimated for diazocompounds, diazomethane and diazirine.     

不确定组合大系统基于观测器的鲁棒分散镇定

研究一类不确定性有界，互联项满足Lipschitz条件的非线性不确定组合大系统的观测器设计和鲁棒分散镇定问题．给出了一类鲁棒观测器的设计方法以及基于此观测器受控系统的鲁棒分散镇定方法，其结果不仅效果较好(指数收敛)，而且是全局性的．最后给出一个数值例子说明结果的有效性．     

Stabilization and kinetics in the emulsion copolymerization of butyl acrylate and methyl methacrylate

We carried out emulsion homopolymerizations and copolymerizations of butyl acrylate (BuA) and methyl methacrylate (MMA) with different types and concentrations of surfactants to determine the influence of these parameters on the particle size and particle size distribution and to elucidate the mechanism of particle formation. As expected, the mechanisms of nucleation above and below the critical micelle concentration were very different; however, it was also found that the presence of partially soluble monomers such as MMA in the water phase had a significant influence on the critical micelle concentration of Triton X‐405 (>50%). In addition, the nucleation mechanism during copolymerization seemed to be dominated by BuA, with the number of particles per liter being very similar to the number nucleated during its homopolymerization. © 2001 John Wiley & Sons, Inc. J Polym Sci Part A: Polym Chem 39: 2832–2846, 2001     

两元两站分布式判决系统中的最优分站压缩律

讨论在中心融合律综合下两元两站分布式判决系统中最优分站压缩律的问题，着重讨论两种斯信号检测，得出的结论是：在高斯噪声影响下的确定性信号检测中，和在随机性高斯信号检测中，当方差，相关系数满足一定条件，最优分站压缩律是似然比。     

On Dynamic Output Feedback Guaranteed Cost Control of Uncertain Discrete-Delay Systems: LMI Optimization Approach

In this paper, we consider a design problem of dynamic output feedback controller for guaranteed cost stabilization of discrete-delay systems with norm-bounded time-varying parameter uncertainties. A linear-quadratic cost function is considered as a performance measure for the closed-loop system. Based on the Lyapunov second method, several stability criteria for the existence of the controller are derived in terms of linear matrix inequalities (LMIs). The solutions of the LMIs can be obtained easily using existing efficient convex optimization techniques. A numerical example is given to illustrate the proposed method.     

非光滑控制Lyapunov函数及非线性切换系统的镇定问题

In this paper we consider general nonlinear switching systems.Under an addi- tional assumption,we prove that there exists a state space depending switching rule which stabilizes the system in a very general sense.