出汗假人系统特征方程与稳定性判定  

Characteristic equation and stability determination of sweating manikin

作　　者：谌玉红[1] 李若新[1] 姜志华[2] 郝俊勤[3] 

机构地区：[1]军事医学科学院卫生装备研究所,天津300160 [2]总后勤部军需装备研究所,北京100088 [3]解放军医学图书馆,北京100850

出　　处：《纺织学报》2006年第10期67-69,共3页Journal of Textile Research

摘　　要：采用实验方法,通过出汗假人皮肤表面温度和湿润度的单位阶跃响应,求得系统的结构参数阻尼比ξ和自然振荡频率ωn,判定该出汗假人系统的稳定性。实验结果表明:假人皮肤表面温度控制过程的阻尼比ξ为0.804,说明皮肤表面温度控制系统为欠阻尼二阶系统,振荡过程为衰减振荡,且自然振荡频率ωn为0.004 6,温度控制过程平稳性较好;假人出汗控制过程的阻尼比ξ为0.643,说明出汗控制系统也为欠阻尼二阶系统,振荡过程为衰减振荡,自然振荡频率ωn为0.002 8,出汗控制过程平稳性也很好。The two parameters （damping ratio ξ and nature surge frequency ωn ） of the system are obtained through the step response curve of sweating manikin. According to the values of ξ and ωn, the stability of sweating manikin system can be determined. The experimental results show that in the control process of manikin surface skin temperature, when ξ is 0. 804, it illustrates that this control system is an underdamping second-order system. The surge process is attenuation. When the nature surge frequency ωn equals to 0.004 6, the stability of this control process is very good. In the control process of manikin surface wetness, when ξ is 0. 643, it illustrates that this control system is also an underdamping second-order system. The surge process is attenuation, too. When the nature surge frequency ωn equals to 0.002 8, the stability of this control process is also very good.

关 键 词：出汗假人 控制系统 特征方程 稳定性 

分 类 号：TN86[电子电信—信息与通信工程]