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《电子技术与软件工程》2015,(8)
车载平台天窗、升降特性的车体架构,常被布设于外厢车体、通讯车体衔接着的活动顶盖。雷达衔接的厢式车,舱体顶盖应能顺畅移动;顶盖启闭架构,应能与现场特有的状态契合。本文经过调研,设定了雷达舱特有的伺服控制,以便管控这样的顶盖。顶盖灵活启闭,能适应环境,且便于平常修护。这种设计路径,能保障高层级的技术水准,提升机动能力。 相似文献
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依据DFx关键设计技术和人性化设计理念,立足于使用者的角度,车载雷达的结构设计,要充分考虑操作者的作业能力、作业强度与作业环境,加强结构的优化设计.文中提出通过面向装拆设计提升系统的机动性能、通过面向环境设计改善系统的舒适性、通过面向可靠性设计增强系统结构的稳健性、通过面向维修性设计提高系统维修的便利性,从而让使用者感到简单、方便,不仅体现设计师对人性的关怀,更有助于提高顾客的满意度. 相似文献
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从火控雷达结构造型设计的角度,阐述了结构造型设计的复杂性,提出了军事装备造型设计应有的理念。介绍了某车载火控雷达结构造型设计,提出了车载火控雷达结构造型设计中必须把握的问题,并进行了较细致的设计分析。 相似文献
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本文设计了一种应用于77GHz的全金属车载雷达天线阵列,天线的辐射单元采用单脊波导开缝的形式,实现了水平极化的辐射模式,并且结构更加紧凑,然后通过调整各个缝隙偏移中心的距离来满足切比雪夫电流分布,使天线在H面方向上的副瓣得以有效降低。天线的馈电部分通过一个一分八的E面不等分功分网络将8个天线辐射单元组成阵列来提高增益,并防止能量泄露,对不等分功分网络的幅度和相位进行优化设计,使其满足天线阵列在E面上的低副瓣需求。仿真结果表明,在所需的76-77GHz频段内|S11|小于-10dB,增益大于24.7dBi,E面和H面的副瓣电平分别优于-25 dB和-20 dB,方向图稳定。所设计的天线阵列结构紧凑,易于加工,在车载应用中具有良好的前景。 相似文献
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某车载固态发射机的冷却系统设计 总被引:1,自引:1,他引:0
对某车载固态发射机内部功放组件和其他集中热源的散热问题进行了研究,完成了整个机柜系统冷却系统设计。计算证明在车载方舱的工作环境下,采用强迫空气冷却能满足车载固态发射机的散热要求。 相似文献
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The detection of low flying targets with small radar cross section (RCS), known as low observables, such as cruise missiles and stealth airplanes adds a new dimension to radar signal design and radar signal processing. A high resolution look-down radar is very attractive since it takes advantage of target shape to overcome difficulties encountered with small RCS. The look-down geometry, however, imposes three requirements: 1) the radar should detect targets with small relative velocities from almost zero to about the velocity of sound with no blind speeds, 2) it should minimize ground clutter by using short pulses, and 3) the radar signal must have a thumbtack ambiguity function. We investigate a look-down radar that eliminates time side lobes of compressed signal correlation functions to improve range resolution, reduces ground clutter to enhance receiver dynamic range, and uses thumbtack resolution function to resolve moving low observable targets from the surface of the Earth. The side lobe elimination technique transforms the correlation function of a coded waveform, based on complementary codes, to the correlation function of a single pulse. Features of side lobe elimination technique along with clutter cancellation circuits are presented in terms of blind speeds and range-velocity resolution function 相似文献
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同步是双基地雷达的关键技术之一,该相位同步系统采用双向相位传递法,在收、发站分别测量相位差,再将两个相位差值相减得到相位补偿值。通过对相位同步信号采样,加窗,用FFT谱分析法测量相位差值,通过仿真证明该方法可精确测得相位差值,完全可达到双基地雷达相位同步要求。 相似文献
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本文首先介绍了智能控制技术的发展状况,同时针对该技术在机电控制系统中的应用进行了分析,希望对提升两者的融合应用有所帮助. 相似文献
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通过对舰载雷达天线稳定转台系统典型载荷分析,并分别对各类载荷的计算方法进行了说明,最终形成舰载雷达天线稳定转台系统的通用载荷计算方法。再将该通用载荷计算方法用软件进行实现,为准确快速构建雷达天线稳定转台系统方案提供了有力的支撑。 相似文献
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对多功能雷达综合接口板的工作原理进行了介绍,着重讨论了同时多波束雷达在接口板中抗干扰技术和抗杂波技术的设计和应用。 相似文献
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Presents a novel VLSI approach for combustion engine control. The approach is based on a real-time solution of a thermodynamical differential equation. The control system calculates an optimum ignition point by fast measurement and real-time processing of signals as temperature, pressure, and volume of the combustion chamber. The required computational power cannot be met with standard signal processors. The design of a mechatronic system that is based on an application-specific vector architecture is presented. Each design step from the analysis of the heat release algorithm, the optimization of the algorithm and the dataform, the mapping on architecture, the physical design of the testchip set and the single chip, the chip test, and the system integration, is presented. Finally, the application at an engine test-stand and results are shown.<> 相似文献
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Optimal design of electromechanical actuators for active loads 总被引:1,自引:0,他引:1
The proliferation of electromechanical actuation promises reduced maintenance requirements and cost, improved efficiency and reliability, and more environmentally friendly operation. Within this paper, the issue of optimal component selection for actuator design is addressed. Optimality is defined as an engineering trade-off concerning power transfer to the load, efficiency, and torque demand. An equivalent circuit for the actuator/active load system is developed and represented in the phasor domain. Sinusoidal steady-state techniques are employed for system analysis and definition of the conditions for optimality in applications where load force and velocity profiles are known. The actuator application of thrust vector control on the Space Shuttle main engine is specifically addressed 相似文献