随着无人艇技术的发展成熟,各型无人艇已逐步应用到民用和军用领域.无线通信系统作为无人艇的重要组成部分,承担着无人艇与母艇之间信息交互的功能.从无线通信技术的发展现状出发,分析出适用于无人艇应用场景的无线通信技术及工程设计方法,并设计了一种自适应无线通信系统.该系统能根据无人艇工作状态提供连续稳定的数据链,经试验测试,运行效果良好.

油套管内涂层接箍生产设备及其在实际使用中存在的问题,通过对生产过程的分析,结合设备的实际情况对供粉系统进行全面改造.

针对海洋设备长时间水下工作的特点,设计了一款应用于水下设备工作深度记录的低功耗深度记录仪.首先介绍了深度记录仪的组成和工作原理,然后详细描述了深度记录仪的软硬件设计架构和数据分析应用软件,并采用应用软件对试验数据进行了分析,最后进行了应用小结.

针对同频重叠信号的单通道盲分离问题,提出了一种自校正频偏和调整幸存路径数目的盲分离算法.针对两路QPSK信号同频重叠的且存在频率漂移等单通道信号盲分离,推导了基于过采样的信道参数估计模型,利用纠错编码的方法降低误码率,利用指数加权递归最小二乘法(RLS)估计信道参数,并利用估计出的信道参数校正频率漂移等带来的频率偏差,通过在逐幸存路径(PSP)算法调整幸存路径数目解决信道参数收敛和计算复杂度之间的矛盾,提高了频率漂移等变化信道下的参数估计性能,并降低了计算量.仿真结果表明,该算法能够较好地实现频偏自校正,弥补频率漂移带来的影响,同时可以大幅度降低计算量.

According to the requirement of underwater motion control in the area of ocean exploration,a new underwater attitude recorder based on ADIS16385 is introduced in the paper.At first the hardware composition and work principle of the underwater attitude recorder are described in detail.Then the composition and process flow of embedded software and data analysis software for the recorder are introduced.Finally,conclusion about applications of the recorder is given.

网络多媒体教学是"远程教学"的一种形式,是异地间通过通讯和信息处理技术提供信息处理手段,传送声音、数据、文件、图片甚至动态图像的教学活动,是现代成人教育教学模式新的发展方向。与传统成人教育相比,网络多媒体教学开放灵活,内容丰富,教学效率高,具有明显的优势。为在成人教育中有效应用网络多媒体教学,笔者认为构建合理高效的网络多媒体教学平台,加强对学生学习效果的持续跟踪监督,应成为所关注的焦点。

The formulation and execution of the standard system in internal coating enterprises of oil country tubular goods (OCTG) was described in this paper. It indicated that the standardization system plays a positive role in promoting the establishment of company system, the management of administrative organization, the execution of the production process and the innovation of science and technology. It also promoted the quality of the products and strengthen the competitiveness of the enterprises.

In this paper,the application of large current intelligent charger LTC4007 in towfish is introduced.The charger could charge 3- or 4-cell Li-Ion batteries in large current with intelligent control,and present interface I/O used for statement.The test result proves that LTC4007 works well in the towfish.

Shipboard antenna would shake while boat sailing on sea.This could lead communication interrupt between antennae,so two -axis stable platform was used to isolate the shake between antenna and boat.According to the analysis of two-axis stable platform's work principle,the composing and control method of the control system is introduced.A controller based on P89V51 is designed,and the peripher- al equipment is introduced particularly.Furthermore,the soft structure is explained simply at the end.System testing on this controller got a good result.

According to the analysis of two-axis stable platform's work principle,a detailed mathematic modeling is conducted of each part of the system,and dynamic simulation structure of double closed loop stable platform control system is also built combined with PID control theory.Simulation results prove that the system has a good effect on controlling the stable platform.

Using human ambulation as the research object,by constructing human geometrical and kinetic model,introducing auxiliary joint angle,and combining inbetweening principle with existent approach of motion control,this paper proposed a new method to control human ambulant gesture automatically and flexibly of each period.The practicability of the approach has been demonstrated through emulation mode.

In response to new challenges and difficulties in multi-axis CNC machining, the angular interpolation for parametric curves is proposed and the general principle is outlined. The angular interpolation generates the reference commands along the given position curve and orientation curve based on specified angular feedrate. Given the linear and angular feedrate, the position and orientation parameters are interpolated by second-order Taylor expansion. By taking the correspondence of the linear feedrate with the angular feedrate into account, the position parameters are generated. The angular interpolation is carried out based on the parametric interpolation.

The online programming for the track control of the experimental dolly is implemented here by analyzing the motion model for two-wheeldriven dolly and using the program processing principle and online programming method used on numerical control machine,and a designing manner is also presented,which is aimed for controlling the track of the two-wheel robot dolly.

In order to improve the performance of machining in multi-axis CNC, tri-parameter curves are proposed to be adopted for tool paths generated by existing section curve method. The interpolation for tri-parameter curves is carried out and the general principle is outlined. By taking the correspondence of the curve geometry with kinematics into account, the interpolation approach is proposed. Given the feedrate, the parameters are interpolated by second-order Taylor expansion. The tri-parameter curve interpolation is carried out based on parametric interpolation.