激光陀螺稳频稳锁区控制参数测试系统

稳频稳锁区控制系统对提高激光陀螺的性能有着重要意义。设计了激光陀螺稳频稳锁区控制系统,并开发了稳频稳锁区控制参数测试系统。结合某型激光陀螺进行了试验验证。结果表明,该系统完全满足陀螺控制系统参数测试的需求,符合陀螺设计指标。     

一族精确罚函数的存在性及控制参数的下界

本文讨论了非线性等式与不等式约束的优化问题的一族比较广的精确罚函数的存在性,不需凸性及任何约束规格的假设,证明了当罚参数充分大后,惩罚问题的(严格)局部极小点是原问题的(严格)局部极小点,惩罚问题的全局极小点是原问题的最优解,并给出控制参数的一个下界。     

Banach空间中含控制参数的抽象动力方程的解

在一般Ｂａｎａｃｈ空间中取值的向量值函数组成的Ｌｅｂｅｓｇｕｅ空间中，引进了含控制参数的抽象动力方程，并且应用算子半群方法给出了其解。     

深刻蚀的利器——ICP

等离子刻蚀技术作为一门较新的技术在半导体集成电路MEMS、光通讯技术及传感器制作等领域广泛应用。     

Interplay of superconductivity and d-f correlation in CeFeAslPOl_yFy

The recent discovery of high-temperature superconductivity in iron-based pnictides （chalcogenides） not only trig- gers tremendous enthusiasm in searching for new superconducting materials, but also opens a new avenue to the study of the Kondo physics. CeFeAsO is a parent compound of the 1111-type iron-based superconductors. It shows 3d- antiferromagnetic （AFM） ordering below 139 K and 4f-AFM ordering below 4 K. On the other hand, the phosphide CeFePO is a ferromagnetically corelated heavy-fermion （HF） metal with Kondo scale TK 10 K. These properties set up a new platform for research of the interplay among magnetism, Kondo effect, and superconductivity （SC）. In this review, we present the recent progress in the study of chemical pressure effect in CeFeAsOl_yFy （y = 0 and 0.05）. This P/As-doping in CeFeAsO serves as an effective controlling parameter which leads to two magnetic critical points, Xcl -- 0.4 and Xc2 - 0.92, associated with suppression of 3d and 4f magnetism, respectively. We also observe a turning point of AFM-FM ordering of Ce3＋ moment at Xc3 - 0.37. The SC is absent in the phase diagram, which is attributed to the destruction to Cooper pair by Ce-FM fluctuations in the vicinity of Xcl. We continue to investigate CeFeAsl-xPxO0.95Fo.os. With the separation of xcl and xc3, this chemical pressure results in a broad SC region 0〈 x 〈 0.53, while the original HF behavior is driven away by 5% F- doping. Different roles of P and F dopings are addressed, and the interplay between SC and Ce-4f magnetism is also discussed.     

Controlling Factors of the Electric Field at the Triple Junction

The metal-dielectric-vacuum junction is defned as the triple junction owned enhanced electric field, thus this special region is regarded as the location where primary electrons emission is favored. For electron emission, triple junction could affect both the flashover breakdown of insulators and the electron emission property of ferroelectrie cathodes. In this study, we theoretically investigate the electric field enhancement in the triple-junction region. It is found that the key parameter to determine the field enhancement is the taper angle of the electrode and the relative permittivity of the dielectric. In addition, we first deduce the accurate expression of the electric field in this special region. The controlling parameters for determining the field enhancement are discussed in detail. We also discover the way to reduce the electric field of this region through simulation. The current analysis would be useful for both the electron emission enhancement and the issue of flashover breakdown.     

飞航导弹控制回路分析CAD软件研究

介绍了一种飞航导弹控制回路分析CAD软件———AMCLCAD的结构、功能、工作流程和具体使用方法。该软件主要用于优选控制回路的PID参数,软件采用图形用户界面,操作简单,具有较好的可扩展性和可维护性,运用于各型飞航导弹的控制系统设计中,可大大提高设计过程的自动化程度,加快设计进程,提高工作效率和可靠性,因而具有较高的推广应用价值。     

A Music Preference Test System for Rats

In music preference experiments, housing conditions and the control of parameters for animals can affect experimental results. However, the needs of animals are indeed insufficiently considered in many reports of animal experiments. In order to evaluate which music rats prefer, we developed a new music preference test system. Dwelling time and visiting frequency can be recorded automatically when rats moving among different compartments of the system. We can also observe the behaviors of rats captured by a video camera. By this system, the music preference can be found, and then the related music can be used in following various studies. In this paper, we described the design of this music preference test system of rat, and some primary results were reported.     

动磁式双定子直线压缩机动态特性仿真研究

针对一种动磁式双定子直线压缩机,在分析电机运行原理的基础上,建立其等效磁路模型,推导了气隙磁链、电磁力、电磁力系数、反电动势系数和电感等重要控制参数的解析公式,并通过有限元计算对解析结果进行验证。根据控制参数计算结果,对直线压缩机系统的动态特性进行仿真研究。重点分析了电机电流、动子位移和速度随时间变化规律及活塞振幅随频率变化特性。研究结果对直线压缩机活塞的行程控制、弹簧系统的谐振设计以及后续的控制系统设计提供重要理论依据。