EXTENDED CESRO OPERATORS ON THE BLOCH SPACE IN THE UNIT BALL OF C^n

The paper defines an extended Cesaro operator Tg with holomorphic symbol g in the unit ball B of Cn asWhere is the radial derivative of g. In this paper, the author characterizes g for which Tg is bounded (or compact) on the Bloch space B and the little Bloch space Bo-

EXTENDED CESRO OPERATORS AND MULTIPLIERS ON BMOA

In this article, we characterize the boundedness and compactness of extended Cesaro operators on the spaces BMOA by the Carleson measures in the unit ball. Mea while, we study the pointwise multipliers on BMOA.

Essential Norm of Extended Ceshro Operators between Bloch-type Spaces

The Bloch-type space Bω consists of all functions f ∈ H（B） for which｜｜f｜｜Bω =sup z∈Bω（z）｜△f（z）｜〈∞Let Tφ be the extended Cesaro operator with holomorphic symbol φ. The essential norm of Tφ as an operator from Bω to Bμ is denoted by ｜｜Tφ｜｜e,Bω→Bμ. The purpose of this paper is to prove that, for w, ω normal and φ ∈ H（B）｜｜Tφ｜｜e,Bω→Bμ≈lim sup｜z｜→1μ（z）｜Rφ（z）｜∫0^｜z｜dt/ω（t）.

Products of Extended Ceshro Operator and Composition Operator from Generalized Besov Spaces to Zygmund Spaces

We characterize the boundedness and compactness of the product of extended Cesaro operator and composition operator TgCφ from generalized Besov spaces to Zygmund spaces, where g is a given holomorphic function in the unit disk D, φ is an analytic self-map of Ii） and TgC~ is defined byTgCφf（z）=∫z 0 f（φ（t））g′（t）dt.

Extended Cesaro Operator between Bloch-type Spaces

We characterize the symbol  for which the induced extended Cesàro operator T: Bω→ Bμ(respectively, Bω,0 → Bμ,0) is bounded or compact, where  is a given holomorphic function on the unit disc D, ω and μ both are normal functions on [0,1).

Mechanisms of Extending Operation Region in the HL-1M Tokamak

Stable operating region in the HL-1M tokamak has been extended by means of wall conditioning, core fuelling and current control techniques. The mechanisms of the extension are analyzed in this paper. Lithiumization diminishes the impurities and hydrogen recycling to the lowest level. After lithiumization a high density up to 7×1019 m-3 was obtained easily by strong gas puffing with ordinary ohmic discharge alone. More attractively we found that metal Li-coating exhibited the effects of wall stabilization. The low qα limit with higher density was extended by a factor of 1.5-2 in comparison with that for boronization, and 1.2 for siliconization. Siliconization not only extended stable operating region significantly by itself, but also provided a good target plasma for other experiments of raising density limit. Core fuelling schemes are favourable especially for siliconized wall with a higher level of medium-Z impurity (Z = 14). After siliconization the maximum density near to 1020 m-3 was achieved by a combination of supersonic molecule beam injection and multipellet injection. The new defined slope of Hugill limit illustrating more clearly the situation under low qα and high ne discharges was created to indicate the new region extended by combining IP ramp-up with core fuelling. The slope with a large Murakami coefficient increased by a factor of 50-60 %.

Dual-Mode Terahertz Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam

A terahertz dual-mode extended interaction oscillator (EIO) driven by a pseudospark-sourced sheet electron beam (SEB) was presented.The major advantages of the newly developed circuit include 1) high-density SEB interacting with the TM_(11) and TM_(31) modes,respectively,and 2) high output power of over 1 kW at the subterahertz frequency range.Two different types of 2π modes and their output characteristics were studied,and the circuit was optimized to ensure efficient outputs of two standing-wave modes.The three-dimensional (3D) particle-in-cell (PIC) simulation predicts the maximum output power of 1.3 kW with the 3-dB bandwidth of ~0.5 GHz at 303 GHz when operating at the TM_(11)mode,and 3.18 kW with the 3-dB bandwidth of ~0.85 GHz at 364 GHz when operating at the TM_(31)mode.

WC-OWA算子的拓展及其在风险型多属性决策中的应用

研究WC-OWA算子的拓展形式,得到了一些新的数据集成算子,并对其性质进行了研究。在此基础上,探讨属性值以区间形式给出的风险型多属性决策的方法,并用实例进行分析说明该方法的可行性。

Extended Cesáro Operators from BMOA Spaces to Bloch-Type

In this paper the extended Cesāro operator Tg is characterized between the α-Bloch spaces Bα and the BMOA space on the unit disk. Some necessary and sufficient conditions are given for which Tg is a bounded operator or a compact operator from BMOA to Bα.

Bloch-type spaces and extended Cesàro operators in the unit ball of a complex Banach space

Let B be the unit ball of a complex Banach space X. In this paper, we generalize the Bloch-type spaces and the little Bloch-type spaces to the open unit ball B by using the radial derivative. Next, we de?ne an extended Ces`aro operator T_φ with the holomorphic symbol φ and characterize those φ for which T_φ is bounded between the Bloch-type spaces and the little Bloch-type spaces. We also characterize those φ for which T_φ is compact between the Bloch-type spaces and the little Bloch-type spaces under some additional assumption on the symbol φ. When B is the open unit ball of a ?nite dimensional complex Banach space X, this additional assumption is automatically satis?ed.

基于GO法和Extend的装备技术状态评估模型

针对现有的装备使用决策研究难以说明所得评估值代表的物理意义的问题,重新定义了装备技术状态的概念,提出一套基于GO法和Extend的装备技术状态评估的仿真建模方法。从使用者决策需求出发,给出了技术状态的数学表达。采用GO法构建描述功能流程,提出GO模型向Extend仿真模型的转换规则,并利用该规则,将GO模型转换成Extend仿真模型,进行技术状态的仿真评估。分析结果表明:该方法具有可行性,且评估结论对决策者的价值更为直接和有效。

The Local Spectral Properties of Extended Hamilton Operators

In this paper, we introduce the class of extended Hamilton operators and study various properties of this class. We examine the decomposability of extended Hamilton operators. In addition, we prove that an extended Hamilton operator with property （δ） is subscalar. Finally, we consider Weyl type theorems of this class.

Extended Cesàro Operators between Different Bergman Spaces in the Ball

In this paper,we obtain the characterizations on μ for（p,q）-φCarleson measure,and discuss the boundedness（and compactness） of the extended Cesaro operators T g between different weighted Bergman spaces as some application.

基于自适应终端滑模的高速列车迭代学习速度控制

针对高速列车的速度追踪控制问题,充分利用列车运行的重复性,考虑工程应用中迭代初始状态不同和复杂的外部环境,提出一种基于线性扩张状态观测器(LESO)的自适应非奇异终端滑模迭代学习控制算法,使系统在任意迭代初值时均能保证追踪精度。提出一种时变非奇异终端滑模面以抑制初态误差影响,采用LESO估计并补偿列车扰动,设计自适应迭代更新律估计LESO的观测误差,设计全饱和自适应迭代控制律计算输入并将其约束于允许范围内。建立类Lyapunov的复合能量函数,通过严格的数学分析证明其迭代域的差分负定性和有界性,证明所设计的时变滑模面可实现渐进收敛,并证明追踪误差在滑模面内可在有限时间内收敛至平衡点。将本文提出的算法与滑模控制、变增益迭代学习控制、自抗扰控制等算法进行比较。仿真结果表明:无论是否存在迭代初始误差,在相同的条件下,本文提出的算法较其他算法具有更强的抗干扰能力,速度追踪精度提高90%及以上,停车误差可迭代收敛至001 m。

增程式电动汽车发动机的多工作点控制策略

为了研究不同的发动机多工作点控制策略对整车燃油经济性的影响,以某增程式电动汽车为研究对象,在满足整车动力性前提下,设计了发动机三工作点和五工作点控制策略。在不同循环工况下,对比分析了2种控制策略。仿真结果表明,三工作点和五工作点控制策略能够满足整车动力性要求,且三工作点控制策略的燃油经济性更优。

振镜电机系统高性能数模混合驱动控制方法

为满足振镜电机系统高精度和高动态性能的控制需求,提出数模混合架构和扩张状态观测器(ESO)-滑模控制(SMC)复合的高性能驱动控制方法。采用基于数字式控制器和模拟式驱动器的数模混合架构设计,一方面便于实现高性能的非线性控制算法,另一方面能够消除数字式驱动器中脉冲宽度调制(PWM)技术导致的高频电流纹波。基于ESO和SMC复合的振镜电机位置环控制方法,通过ESO估计系统的各种扰动,利用SMC实时消除扰动影响,显著地提升了振镜电机系统的动态性能和鲁棒性。仿真和实验结果表明:相较于比例-积分-微分(PID)控制器,所提方法能够有效地提升系统的鲁棒性和动态响应性能,其中动态响应性能提升了29.4%。

增程式混合动力汽车高速运行经济性研究

为了评估增程式混合动力汽车在高速工况下的燃油经济性,本文建立某MPV的整车动力学模型和关键零部件模型,并提出相应的能量管理策略。试验结果表明,基于所提能量直驱策略的增程式混合动力汽车的高速燃油经济性显著提升,解决了增程式混合动力高速燃油经济性劣于燃油车的行业难题。

改进型自抗扰在ROV位姿控制中的应用

为提高水下机器人(ROV)在水域环境中的位姿控制能力,结合传统自抗扰控制(Active Disturbance Rejection Control,ADRC)策略中fal函数在分段处过渡不够平滑的特点,提出一种新型非线性函数,用以改进传统fal函数。利用双曲正切函数在原点附近单调递增且连续光滑的特征,通过多项式拟合的方法构建出非线性函数sfal函数,然后使用李雅普诺夫方法对sfal函数进行稳定性分析,基于sfal函数给出扩张状态观测器的一般形式,并由此设计改进的ADRC控制器,通过对控制对象ROV搭建数学模型,利用Matlab/Simulink对系统的输出进行仿真与数值分析。最后,在ROV平台上进行对比实验,实验结果表明,改进型自抗扰控制能够有效抑制系统响应的超调量,并提升ROV位姿状态的抗扰能力。

增程式动力系统发动机运行策略优化研究

为进一步明晰自由度高的增程器系统中发动机运行策略对增程式电动汽车经济性的影响,明确发动机性能优化对整车性能提升的潜力,基于GT-SUITE仿真平台,结合能量流详细分析了发动机线工况和点工况运行策略对整车经济性的影响,并对比分析了发动机性能优化前后的整车性能。结果表明,发动机以点工况运行得到的整车基于中国轻型汽车行驶工况(China light vehicle test cycle, CLTC)油耗更优,相比于线工况下整车CLTC油耗,基于点工况整车CLTC油耗可降低至0.038 24 L/km。以增程器系统最优效率点作为发动机工作点的策略相对单一,不利于整车油耗的改善,相比于最佳值恶化0.81%。性能优化后的发动机在高效区可实现更大的功率输出,整车CLTC油耗均得到改善,最佳值从0.038 24 L/km降低至0.036 64 L/km。

单位球上加权Lebesgue空间之间广义Forelli-Rudin型算子的有界性

作者给出了1≤p<q≤+∞以及p=q=+∞时广义Forelli-Rudin型算子S_(λ,τ,c,k,k')是加权Lebesgue空间L^(p)(B_(n),dv_(t))到L^(q)(B_(n),dv_(t))有界算子的条件,并且定理3.2-3.5给出了充要条件,将第二作者等最近在《中国科学》上的结果完善到了1≤p≤q≤+∞.