VAV控制系统模糊解耦

VAV空调系统具有节能、空气品质高的特点,具有广阔的应用前景,但由于VAV空调系统中末端风阀控制回路和送风机控制回路之间的强烈耦合作用,引起VAV控制系统工作不稳定等问题,限制了VAV系统的应用推广。通过引入模型参考自适应模糊控制策略控制总风量,结合末端风阀巡回检验控制,降低了VAV控制系统的复杂程度,提高了空调系统工作的稳定性和可靠性。     

Coupling and Uncoupling Chinese Style

DECADES ago, in the era of the ＂cultural revolution＂ （1966-1976）, love and marriage bore a heavy political burden; the little red book （Quotations of Chairman Mao） was presented in place of a wedding band, or generally served as a token of love and engagement. Imagine how outlandish it seems to young people today to read love letters that pine： ＂I hope you can arrange your work, study and life well, so as to sustain your ideals and revolutionary zeal, and not degrade into an uncouth and lowly person.＂ But such sentiments were typical 40 years ago in decent young men and women, who often delivered revolutionary pep talks instead of whispering ＂sweet nothings.＂     

一种解耦球面并联机构的构型与尺寸设计

给出了一种三支链二自由度解耦球面并联机构,并对该并联机构的构型和运动自由度进行了分析,同时,基于平面四杆机构的原理提出了一种新的设计该并联机构支链尺寸的简便方法.通过对机构运动特点的分析,给出了并联机构在给定工作空间内的无干涉构型.利用ADAMS软件仿真,验证了该机构的可行性.