808 nm大功率半导体激光器腔面膜的制备

采用等离子体辅助电子束蒸发方法在808 nm大功率量子阱半导体激光器腔面设计镀制了HfO₂/SiO₂系前后腔面膜. 用直接测量法测量并比较了各种常用膜系的相对损伤阈值. 增透膜的反射率为12.2％,高反膜的反射率为97.9％. 对于100 μm条宽、1000 μm腔长的条形结构通过器件测量结果是出光功率提高79％、外微分量子效率提高80％、功率效率由没镀膜之前的22.2％提高到镀膜之后的39.8％.     

Output feedback guaranteed cost control of uncertain linear discrete systems with interval time-varying delays

This paper deals with output feedback guaranteed cost control problem for a general class of uncertain linear discrete delay systems, where the state and the observation output are subjected to interval time-varying delay. The proposed output feedback controller uses the observation measurement to exponentially stabilize the closed-loop system and guarantee an adequate level of system performance. By constructing a set of augmented Lyapunov–Krasovskii functionals, a delay-dependent condition for the robust output feedback guaranteed cost control is established in terms of linear matrix inequalities (LMIs). Three numerical examples are provided to demonstrate the efficiency of the proposed method.     

专利资产证券化研究

专利证券化是一种新型的融资方式,它借助于资产证券化为专利权人融得发展所需的资金。与传统资产证券化相比,它有自己的特点。由于资产证券化的发展以及专利量越来越大,我国已具有专利证券化的条件,具备实行专利证券化的可行性。     

如何在Internet上免费检索专利全文

介绍了在如何在Ｉｎｔｅｒｎｅｔ上免费检索专利信息并获得专利全文。     

黑龙江省生物医药产业专利战略研究

生物制药业因其高投入、高风险、高回报的产业特点,对技术的依赖性很强,发达国家的生物制药业因大量的技术支持和成熟的专利战略的运用取得了巨大成功。黑龙江省生物制药业应以国家和企业的专利战略为重点,以行业专利战略为主线,建立知识产权联盟,切实实施好保护模仿创新、建立技术标准、利用国际公约等战略战术,促进该行业的长发展。     

LHCD系统微波激励源性能优化设计

使用数字锁相环技术实现一定带宽内高精度可调节的频率输出,解决了速调管长期工作后响应频率发生偏移,模拟锁相环无法工作在系统最佳频率的问题;在移相器后增加功率幅度控制电路,保证了线性放大器的输出功率不会受到相位调节的影响;设计了一种基于数模转换(D/A)技术与微波电调技术相结合的波形控制单元,解决了激励源输出波形不可控的问题。通过以上三方面的改进,完成了HL-2M装置LHCD系统微波激励源的性能优化设计。     

Determination of the analytical parametric relationship for output spectrum of Volterra systems based on its parametric characteristics

The output frequency response function (OFRF) of Volterra systems can be described as a polynomial function of model parameters. However, the analytical determination of the OFRF is very computationally intensive, especially for higher order OFRF. To circumvent this problem, a numerical method can be adopted, provided that a series of simulation or experimental data for this polynomial function are given. In this study, it is theoretically shown that the analytical parametric relationship of OFRF up to any order can be determined accurately by using a simple Least Square method and every specific component of the output spectrum can also be determined explicitly, based on the OFRF's parametric characteristics. Practical techniques to obtain a unique and accurate solution for the Least Square method are discussed. This study provides a fundamental result for the determination of the analytical parametric relationship for this kind of system polynomial functions by using numerical methods.     

Multi-innovation stochastic gradient algorithm for multiple-input single-output systems using the auxiliary model

In order to reduce computational burden and improve the convergence rate of identification algorithms, an auxiliary model based multi-innovation stochastic gradient (AM-MISG) algorithm is derived for the multiple-input single-output systems by means of the auxiliary model identification idea and multi-innovation identification theory. The basic idea is to replace the unknown outputs of the fictitious subsystems in the information vector with the outputs of the auxiliary models and to present an auxiliary model based stochastic gradient algorithm, and then to derive the AM-MISG algorithm by expanding the scalar innovation to innovation vector and introducing the innovation length. The simulation example shows that the proposed algorithms work quite well.     

变频调速系统中电机主回路电流的检测处理和保护

本文给出了一种三相异步电动机变频调速电源中电机主回路电流的采样,信号处理,以及状态输出的实用电路。     

半夏人工种子的研究

以半夏株芽生长的茎尖作外植体诱导小块茎,筛选直５ｍｍ的小块芭是作人工种子。