The characteristic of the periodic task of control system is analyzed, and a periodic task model is given.

It discusses the engineering feasibility, and proposes a periodic multi-step pulse-based control method in the condition of relative larger measurement noise.

分析基于动力学模型的周期脉冲控制策略，讨论其工程可实现性，并在考虑存在较大测量噪声情况下提出了周期多步脉冲控制的方法。

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A kind of periodic noise feedback control without model based on frequency selective filter

一种基于频率选择的周期噪声无模型反馈控制

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Specific to current control problem in APF, the thesis proposes four kinds of current tracking control methods including periodic sampling control, triangle wave comparison control, hysteresis current comparison control and hysteresis control based on space vector.

针对APF电流控制问题，提出了四种电流跟踪控制方法：周期采样控制，三角波比较控制，滞环比较控制和基于空间矢量的滞环控制方法。

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Additional Periodic Signal to Control Chaos in Permanent Magnet Synchronous Motor

外加周期信号控制永磁同步电动机混沌系统

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A circuit that provides periodic signals to control and synchronize other circuits.

一种提供周期性信号的电路，用于控制和同步其它电路。

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A method for solving the optimal periodic control problem of discrete process

求解离散过程最优周期控制问题的一个方法

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Study of periodic equivalent control force of spinning missile

自旋导弹周期等效控制力的研究

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Also hope to provide a valuable reference for the peer companies to control purchasing cost effectively.

也希望对同行企业有效控制采购成本提供有价值的参考资料。

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A peer to peer fuzzy power control algorithm of wireless sensor nodes is proposed by means of adding fuzzy logic controller to close loop power control technology.

本文将模糊逻辑控制器加入到闭环功率控制技术中，并由此提出一种无线传感器网络中点对点的模糊功率控制算法。

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These conflicts of interest can be controlled by self-control, peer review, government control, institutional policies and procedures, content and process of disclosure and sanctions.

这些利益冲突可以通过自我约束、同行评价、政府干预、立法规范、过程公开、内容公开和处罚进行控制。

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Peer review and quality control in biomedical publication

生物医学出版物的专家审稿和质量控制

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a4-d universe model with the action of strange matter and dark energy is discussed by using trial solution method. 2.

本论文中具有创新性的工作如下：1、采用试探解的方法讨论了具有奇异物质与暗能量作用的四维宇宙模型。

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next, through the pre-testing of the small sample, we take the overall correlation coefficient ( citc) and alpha reliability coefficient method, delete the terms of the low reliability measurement, form the final questionnaire form for large sample survey.

继而通过小样本预测试，采用总相关系数法（CITC）和a信度系数法，删除低信度的测量条款，形成用于大样本调查的最终问卷。

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the reliability and validity of the questionnaire were acceptable in psychometrics. grade difference existed on dimension of study anxiety.

自编问卷有较好的信度和效度，其克伦巴赫a系数、各维度与总分的相关以及与Spielberger焦虑问卷的相关均达到了心理测量学所认可的标准；

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the reliability coefficient of each dimension is 0.71& 0.78 and the total coefficient is 0.82.

各维度信度系数在0.71～0.78，总体a系数为0.82。

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using geometrical optics theory and off-axis aberration analysis, a set of crossed double strip integrators for high power co_2 laser beam homogenizing has been designed.

利用几何光学原理和轴外像差理论，设计一种应用于大功率CO2激光陶瓷烧结实验的反射型正交双带式积分镜均束装置。

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for the latter, we obtain the linear estimation of the number of isolated zeros of the corresponding abelian integral.

对于另一类得到了其相应的阿贝尔积分的孤立零点的估计。

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when the focal length is 160 mm and the f-number is 1.6, the longitudinal aberration is less than 35 μ m, mtf of 10 lp/ mm is greater than 0.7.

系统焦距为160mm，F数为1.6时，系统垂轴像差小于35μm，在10lp/mm时光学传递函数大于0.7。

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based on the aberrationless theory of self-focusing, the closed-form propagation expressions for gaussian beams through a nonlinear gradient-index medium are derived by means of the abcd law.

基于无像差自聚焦理论，使用ABCD定律导出了高斯光束在非线性梯度折射率介质中的解析传输公式。

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results overall, wavefront aberrations and the rms from the 3rd to the 5th and the 7th order of zernike aberrations were significantly greater after treatment than before treatment ( p < 0.05).

结果角膜矫型术后总像差，第3、第4、第5、第7阶RMS值较术前增加，且差异有显著性（P

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