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提出了一种利用实测柴油机功率、油耗等性能参数确定柴油机双韦伯函数燃烧速度的参数估计方法。该方法以参数化的理论模型得出的预测值与柴油机性能参数的实测值最接近为目标函数确定双韦伯函数中的常数。针对这一多参数、非线性的优化问题的特点,综合运用了模拟退火法、单纯形法和均匀设计法对问题进行了求解,得到了满意的结果。
A parameter estimation method for determining the combustion speed of double Weber function of diesel engine by using the measured performance parameters of diesel engine such as power and fuel consumption is proposed. In this method, the predicted value obtained from the parametric theoretical model is closest to the measured value of the diesel engine performance parameter as the objective function to determine the constant in the double Weber function. Aiming at the characteristics of this multi-parameter and nonlinear optimization problem, the simulated annealing method, simplex method and uniform design method were used to solve the problem. Satisfactory results were obtained.