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利用多项式回归的方法获得不同工况下发动机速度随时间变化的数学模型．基于测试工况定义时的模糊性，故在测试中采用模糊模式识别的方法，确定实际的测试工况，以用于测试参数的处理
The polynomial regression method is used to obtain the mathematical model of engine speed with time under different conditions. Based on the fuzziness of the definition of test conditions, the fuzzy pattern recognition method is used in the test to determine the actual test conditions for the processing of test parameters