| 1. | " we will work closer together in a number of areas in the coming year , such as optimisation of lightning location information , upgrade of communication links as well as study of relationship between weather , climate and health , " mr lam said 来年我们会更加紧密合作,在优化闪电定位资料通讯电路升速天气气候与健康研究等领域继续加强技术交流。 |
| 2. | Keywords : input control terminals output control terminals basic control terminals programmable control terminals alarm signal output terminals analog output terminals switching output terminals up / down function multi - speed function frequency arrived function 关键词:输入控制端子输出控制端子基本控制端可编程控制端报警输出端模拟量输出端开关量输出端升速/降速功能多档速功能频率到达功能。 |
| 3. | The operators monitor the unit operation parameters and intervene the unit operation through crt . the control system is featured by functions such as automatic acceleration , automatic load carrying , automatic shutdown and dynamic trip protection over the key parametes 操作人员可通过crt对重要运行参数监视和控制,机组控制系统具有自动升速自动带负荷自动停机以及可对重要指标实行动态跳闸保护等功能。 |
| 4. | The paper works out the ice crystal spectrum distributing in the different macroscopic and micro - backgroud of the cloud ( ie , the thickness , the temperature and the supersaturation with respect to ice of the nucleation layer ) . this paper also works out the amount of catalyst which is allowed in the cloud nucleation layer according to the different quantity of the supercooled water , the density of the supersaturation of the vapor with respect to ice . simultaneously , the paper discusses the i nfluence of remaining time when seeding artificial ice nucleus in the different ascending - velocity and altitude , and elicits the proper seeding altitude of the catalyst 以此解为依据,得出了不同均流时,人工引入冰核在核化层存留时间,再以此时间作为人工冰核凝华增长时间,求出不同的云宏微观背景(如核化层厚度、温度、冰面过饱和度等)下的冰晶谱分布,经和实际资料比对符合相当好。进而求出核化层中不同过冷水量、冰面过饱和水汽密度下云核化层可允许的催化用量。同时讨论了不同升速,不同高度引入人工冰核时对其存留时间的影响。 |
| 5. | Chapter four introduces the basic theories of continue hidden markov models ( chmm ) . the new method of faults diagnosis based mixture density chmms directly by the vibration ar coefficients vectors of rotating machine is proposed , and then the dynamic patterns presented in run - up process of rotor machine are successfully recognized . at last compares the two faults diagnosis methods of dhmm and chmm , and points out the advantages and disadvantages of the two methods 第四章:在连续隐markov模型( chmm )的基本理论基础上,提出了直接利用振动信号ar系数特征矢量序列建立混合密度chmm的故障诊断新方法,并对转子升速过程的振动模式进行了成功的识别;对dhmm和chmm故障诊断方法进行了对比分析,指出dhmm方法具有算法稳定、计算速度快、识别精度高等特点,对于chmm方法只要通过合理选择特征参数也能得到高的识别精度。 |
| 6. | Nonlinear characteristics such as bifurcation and chaos under three kinds of models are compared . and nonlinear characteristics of coupled vibrations under the model supporting with bearings are analyzed detailedly . the acquired torsion properties and nonlinear characteristics of cracked rotor have good assistant effect on diagnosing cracked fault 以重力占优的开闭裂纹模型为研究对象,研究了裂纹转子升速过程的弯扭耦合振动瞬态响应特性及影响因素,探讨了1 3阶及1 2阶亚谐共振特征;在考虑转速涡动情况下,比较了三种模型的分叉与混沌等非线性特性,并详细分析了轴承支承模型的弯扭耦合振动非线性特性。 |
| 7. | Based on the theory of the discrete hidden markov models ( dhmm ) , the scalar quantization method of vibration spectrum vector of rotating machine is proposed , and then the fault diagnosis method based on dhmm is designed . the experiment of run - up process of rotor machine is made to verify the effect of the new faults diagnosis method 第三章:根据离散hmm ( dhmm )的基本理论,提出了旋转机械振动幅值谱矢量的标量量化方法,并在此基础上提出了基于dhmm的故障诊断方法;利用转子升速过程的振动模式验证了dhmm故障诊断方法的有效性。 |
| 8. | Finally , it briefly discusses the feasibility , the applying foreground and the approach with regard to the calculating method about the amount of catalyst provided in this paper by integrating the ascending - velocity field and cloud water field in the possible working section abstracted from the mm5 mesoscale model with the thickness of the ice crystal particles in nucleation layer and supercooled water quantity which is surveyed by the plane 得出适合的催化剂引入高度等。最后,简要讨论了用mm5中尺度区域模式提取可能作业区的升速场和云水量场,并结合飞机实测核化层冰晶粒子浓度、过冷水量等,探讨了本文提出的催化剂用量计算方法的可行性,应用前景和途径。 |
| 9. | Thermal stress control system actually gather the real - time data of unit sets , compute temperature fields , stress fields and maximum dangerous stress by the math modal , decide target and speedup rotation in every stage of startup process , and justify automatically to realize auto control a serial of processes of turbine , such as speedup , warm - up , connecting net , load changing , stop and unsteady condition etc , and improve automatic level of the unit sets . turbine auto startup ( tas ) system can automatically evaluate steam turbine ' s startup and load changing process according to thermal stress of 热应力控制系统实际是对机组运行参数进行实时采集与监控,通过数学模型实时地计算高、中压缸转子的温度场、应力场分布,以及最危险热应力,以确定启动过程各阶段的目标转数及升速率,并进行自动调整,实现机组冲转、升速、暖机、并网、升负荷、停机以及异常工况下的自动控制,大大提高了机组的自动化水平。 |