Automobile active suspension system with fuzzy control

A quarter-automobile active suspension model was proposed. High speed on/off solenoid valves were used as control valves and fuzzy control was chosen as control method.Based on force analyses of system parts, a mathematical model of the active suspension system was established and simplified by linearization method. Simula-tion study was conducted with Matlab and three scale coefficients of fuzzy controller (kc,kcc,ku) were acquired.And an experimental device was designed and produced. The results indicate that the active suspension system can a-chieve better vibration isolation performance than passive suspension system, the displacement amplitude of automo-bile body can be reduced to 55%. Fuzzy control is an effective control method for active suspension system.     

深海保真取样器研究及其虚拟样机实现

为了解决现有的取样器不能保真取样、无过滤浓缩过程、取样效率低的缺陷,设计了一种供潜器使用,可以在深海指定水深处无污染、无压力突变地采集、浓缩海水中悬浮颗粒物和浮游生物的取样器。采用计算机模拟和实验相结合的研究方法,依托于多种高性能的仿真软件ADAMS以及ANSYS,构建一个虚拟样机仿真平台,快速建立包括机械系统、液压系统、控制系统在内的复杂机械系统虚拟样机,对取样器进行深入的仿真分析与研究,以达到优化设计和正确评估的目的。     

深海悬浮物过滤薄膜过流能力与压力损失研究

专门设计了一种测量筒体内薄膜过流能力装置,指出在深海条件下影响取样器过滤薄膜过流能力和压力损失的因素,并在实验结果的基础上运用MATLAB对其进行了仿真研究,讨论了过流条件下试压泵等因素引起的管道流体压力脉动现象。