These developments will yield a cognitive radio able to sense its rf environment and location and then alter its power, frequency, modulation and other operating parameters so as to dynamically reuse whatever spectrum is available 以这些发展制作出来的感知无线电装置,能感应所在的rf环境与地点,进而调整功率、频率、调变及其他运作参数,以便灵活运用所有可用的频谱。
In the study of the flash temperature, the formula is given for the flash temperature by the heat exchange theory . the effects of geometric and operating parameters on the flash temperature are studied 在面齿轮传动齿面瞬时温升的研究中,利用传热学基本原理,推导了齿面瞬时温升的基本公式,求解了各有关计算参数,研究了模数、压力角、传动比等参数变化时对齿面瞬时温升的影响。
Abstract : this paper presents a simulation experiment system according to the determined parameters of the jinghu high speed railway which will be built . it will provide a experiment tool for the simulation research of transport organization and operating parameters 文摘:根据我国拟建的京沪高速铁路及已定的技术参数,建立了京沪高速铁路仿真实验系统,为高速铁路运输组织方法和运营参数的模拟研究提供了条件。
Abstract : in this paper, based on the quadratic general rotary unitized design, the experiments effected by multiple factors have been made on vibro-fluidized bed spray granulation . mathematical model has been established, and the optimum operating parameters are found out 文摘:研究了利用二次通用旋转组合设计来进行多因素影响的振动流化床喷雾造粒试验,建立数学模型,得出了具有一定参考价值的最佳操作参数。
Four conclusions were obtained : 1 ) the ideal maximum performance of rbcc engine is basically determined by the match of rbcc " s basic operating parameters such as the ratios of primary / secondary mass flow rate, total pressure, total temperature and the ratio of overall oxidant / fuel mass flow rate, etc 主要获得如下结论:1)基本工作参数的匹配,如引射比、总压比、总温比,决定了引射发动机最大可能获得的性能。
In the fourth chapter of the dissertation, on the basis of experimental researches for hydrogen-gasoline dual fuel engine, the researches on the form of the hydrogen-air mixture and effect of structural and operating parameters on the form of mixture and combustion has been conducted 本文在对氢-汽油混合燃料发动机试验研究的基础上,系统地研究了氢发动机混合气形成方式,结构参数和运转参数对氢发动机混合气形成和燃烧的影响。
Reactive power are calculated using the new algorithm . on the basis of analyzing different kinds of control strategies of var compensation, the paper applies the criterion of voltage and var to control switching and illustrates a improved mode of switching capacitor which can prevent the switched-capacitor from the impacting of instantaneous rush currents by means of zero-crossing triggering of scr components, and can realize auto-tracking var and auto-switching shunt capacitor bank . initial operating parameters are stored in information flash memory of the mcu using flash self-programming technique in order to decrease complexity of the circuit and improve stability 高压智能无功补偿控制器以flash型16位单片机msp430f149为控制核心,采用了一种相角实时测量的新算法,并在此基础上计算出了功率因数、有功和无功,减少了运算量提高了精度;在分析了各种无功补偿控制策略的基础上,以母线电压和无功功率复合判据控制投切,并提出一种改进的电容器投切方式??暂态投切控制晶闸管过零触发,避免了电容器投切时的电流冲击;稳态运行时接触器替代晶闸管,实现无功补偿的自动跟踪和电容器的自动投切,解决了投切时的暂态电流冲击和稳态时可靠运行的难题;控制器的原始运行参数采用flash自编程技术,将其保存在msp430f149片内的信息flash中,简化了硬件电路,大大提高了系统的可靠性。
In a word, wbaer can effectively remove micro-quantity hmi from dk with alkali metals, alkaline-earth metals and anions at high concentration . on the basis of lots of regeneration experiments of wbaer ( d301g ), the best regeneration manner ( regurgitation regeneration ), the optimal regeneration agents ( h2so4 and naoh ) and the optimum operating parameters of regeneration are obtained 论文进而对d301g型弱碱性阴离子交换树脂进行了再生试验研究,确定了最佳再生方式(逆流再生),最佳再生剂(h2so4和naoh)以及酸液再生时的最佳浓度范围(2%4%)和最佳流速范围(34m/h);并通过正交试验确定了逆流再生过程中的最佳运行参数组合。
Simulation tests shows that the diagnosis system can carry out on-line monitoring and diagnosing for the system's air leak by making use of the existing routine measure points and the operating parameters to be easily measured directly; because of the generalization characteristic and reasoning function of the artificial neural network, the diagnosis system can reach better diagnosis result even under the circumstance of insufficient information, obvious measuring error and yawp shape change; the above research result plays an important instruction meaning in improving operating economy of power station boiler 仿真测试结果表明,利用电站锅炉现有的常规测点和系统易于直接测量的运行参数,可以实现系统漏风状况的在线监测与诊断;由于人工神经网络所固有的泛化和推理功能,即使在测量信息不完备或存在明显的测量误差和含有噪声形变等情况下,诊断系统仍然可以提供较为有意义的诊断结果;上述研究结果对于提高电站锅炉运行经济性具有重要的指导意义。
As backwash is the key of renewing and keeping up the function of filter, so some factor optimization experiments of backwash have been done . the optimum operating parameters of air scour and water backwash of ceramics media are chosen by multiple factors experiments : qa = 15 l / s ? m2, qw = 5 l / s ? m2, t1 = 1min, t2 = 5min, t3 = 5min 经多组实验正交分析结果后得出了涂铁陶粒滤池反冲洗实验的最佳参数组合:气冲强度15l/s?m2,水洗强度5l/s?m2,单气预冲1min,气水同时反冲洗5min,单水漂洗5min。