variable parameters model

The thermal parameters of the solar drying with accessorial heat present nonlinear, large-lag, time-variable and model uncertainty in drying process. A kind of fuzzy adaptive PID controller was designed.

针对太阳能辅助热能干燥过程参数时变性和模型不确定性设计了一种基于模糊推理的参数自适应PID控制器。

Compare the difference pattern between CNOP-P ( local CNOP-P) result from multi-parameters optimization and error of given linear combination of the parameters, then discuss their influence on simulated result of five-variable grassland ecosystem model.

比较了多参数优化所得CNOP-P（局部CNOP-P）和给定的线性组合参数误差的差异，探讨了上述两类参数误差对五变量草原生态系统模拟的影响。

Microsoft Excel spreadsheet is used to design the involutes of gear, and the variable sheet is used to input the basic gear parameters and the calculating formula, etc.. Thus the parameterized model of spiral gear was realized.

并利用microsoft excel电子表格创建齿轮渐开线，用变量表输入齿轮的基本参数、计算公式等，从而实现了斜齿轮的参数化造型。

Ased on the feature that the construction conditions for dam concrete are variable with disturbance of many random factors, a gray-box predictive method combined with mechanism model of heat exchange and experimental identification of parameters is presented.

针对大坝混凝土施工条件多变，随机因素、干扰多等特点，提出将热学机理模型和参数经验识别相结合的灰色预测法，对大坝混凝土的温控防裂措施进行动态管理。

Parameters of the dynamic statistical model are the time-varying parameters, variation of parameter reflects the variable trend of seepage.

动态模型的统计参数是随时间变化的时变参数，参数的变化反映了大坝的渗流变化趋势。