汽车车内噪声控制是一项系统工程,涉及许多方面。本文介绍了结构噪声控制的新概念——有源噪声控制(Active Noise Control ANC)系统。鉴于系统建立精确的数学模型比较困难,用模糊控制策略实现系统的控制功能结合实际设计了该系统,并进...汽车车内噪声控制是一项系统工程,涉及许多方面。本文介绍了结构噪声控制的新概念——有源噪声控制(Active Noise Control ANC)系统。鉴于系统建立精确的数学模型比较困难,用模糊控制策略实现系统的控制功能结合实际设计了该系统,并进行了路面实验,得到了较满意的结果。展开更多
This article described the characteristics of the liquid nitrogen engine's ideal open cycle.Using two interconnecting strokes to achieve the power output can mitigate the trade-off between high efficiency and the ...This article described the characteristics of the liquid nitrogen engine's ideal open cycle.Using two interconnecting strokes to achieve the power output can mitigate the trade-off between high efficiency and the potential mechanical complexity of multiple-cylinder engines. The total specific energy of the binary media (methane-nitrogen) cycle system could be much higher than the unitary medium (liquid nitrogen) cycle system. By theoretical analysis, the reasonably acceptable driving range proved the feasibility of the liquid nitrogen engine used for supplying power for a lightweight car.展开更多
文摘This article described the characteristics of the liquid nitrogen engine's ideal open cycle.Using two interconnecting strokes to achieve the power output can mitigate the trade-off between high efficiency and the potential mechanical complexity of multiple-cylinder engines. The total specific energy of the binary media (methane-nitrogen) cycle system could be much higher than the unitary medium (liquid nitrogen) cycle system. By theoretical analysis, the reasonably acceptable driving range proved the feasibility of the liquid nitrogen engine used for supplying power for a lightweight car.