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以Einstein稀悬浮液的粘度方程为依据,提出了一种通过测定粒子的稀悬浮液粘度,进而求出粒子的Einstein系数的方法;并讨论了悬浮介质的选择原则。 相似文献
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初步探讨了苎麻纤维经鼢,在以SHP做催化剂的条件下交联整理后,苎麻纤维的长度、细度与强度的关系变化.实验发现,交联整理前后,苎麻纤维的长度分布、细度(直径)分布都为正态分布;长度和强度、细度(直径)和强度之间的关系都为线性关系;经交联整理后,苎麻纤维的强力有了较大幅度的下降,强力保留率非常低. 相似文献
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By building a turbine charged diesel engine model and a proportional electromagnet-rack model in Matlab/Simulink and using dSPACE,a hardware-in-loop(HIL) simulation platform for the electronic governor is constructed.A developed electronic governor is simulated in this platform.The comparison between the experiment and simulation results indicates that the built models can meet the HIL requirements.The control parameters obtained from virtual calibration and the control algorithm validated by HIL simulation can be applied in real bench experiments directly. 相似文献
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The control parameters of electronic governor that influence the transient characteristics of the engine are analyzed. An electric control unit was developed and the control parameters were calibrated on the test bench. The initial value of integral term and the maximum output of rack position proportion, integration and derivation (PID) controller affect the step and triangle response drastically. Through correcting the proportional term and integral term of speed PID controller, the dynamic speed drop and speed overshoot are improved. A property control strategy for cold starting an engine is set, and the calibration process indicates that the fuel injected into the cylinder per cycle and the desired speed ascend rate drastically affect the start transient process. 相似文献
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黄千 《数字社区&智能家居》2015,(2):239-240
设备监控信号传输是空管设备保障中的重要部分,本文以铜仁雷达站监控信号传输为例,分析原有的传输方式,采用IP路由方式进行串口监控信号的传输管理,并取得良好的实施效果。 相似文献
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