电子设备热学工程师正面临更加严峻的挑战。发热密度的不断增加、产品尺寸的不断减小,无不束缚着工程师们的手脚,他们必须寻求新的、不同的方法来对其系统进行对流冷却。传统的做法是提高风扇转速以获得更大的风量,保证更大的冷却效果。其结果是,声学噪声和功耗问题在有待解决的诸多问题中变得更加突出。本文将介绍减小或消除这些问题的风扇速度控制方法。 Thermal engineers of electronic equipment are facing more severe challenges. Increasing heat densities and ever-decreasing product sizes all bind engineers, who must look for new and different ways to convectively cool their systems. The traditional approach is to increase the fan speed to get a larger air volume to ensure greater cooling. As a result, acoustic noise and power consumption issues become more prominent in many problems to be solved. This article describes ways to reduce or eliminate fan speed control of these issues.