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Angular velocity/angular acceleration calculator, torque estimator, and combustion state estimator
Angular velocity/angular acceleration calculator, torque estimator, and combustion state estimator
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机译:角速度/角加速度计算器,扭矩估计器和燃烧状态估计器
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摘要
An angular velocity/angular acceleration calculator of the crankshaft in an internal combustion engine includes a crank angle detection device, a crank angle correction device, and an angular velocity/angular acceleration calculation device. The crank angle detection device detects a crank angle in the internal combustion engine and a time at the crank angle. The crank angle correction device corrects the crank angle and the time thus detected to an equiangular crank angle and a time corresponding thereto. The angular velocity/angular acceleration calculation device calculates an angular velocity and an angular acceleration of the crankshaft by converting a function of the time with respect to the crank angle that are corrected by the crank angle correction device so as to be regarded as a periodic function, and utilizing the discrete Fourier transform of the converted function.
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