Fabreeka气浮减震器技术研讨

Technical Discussion、 Natural Frequency 自然频率 Pneumatic isolators consist of a volume of air (air chamber) that is sealed with a reinforced, flexible diaphragm. When pressurized, the isolator supports its payload using a piston, which is located on top of the diaphragm. (Fig 3) 气浮式减震器由一个空气室（气囊）由一个加固的、柔韧的隔膜密封。当受压时，减震器通过位于隔膜上方的一个 Piston（锤头）支撑载荷。 The effective area of the diaphragm and the pressure on the diaphragm define the load capacity of the isolator. The pressure in the isolator is controlled by a leveling valve that controls both the internal pressure and “float” height of the isolator. 有效的隔膜面积和隔膜上的压力确定了减震器承载载荷的能力。减震器内的压力由一个能控制内部气压和减震器浮起高度的高度调节阀来控制。 The typical pneumatic isolator design incorporates dual air chambers, a spring chamber and a damping chamber. In the Fabreeka design, the damping chamber is separated from the spring chamber and connected by pneumatic tubing (see Damping). This design concept can take different shapes, since only the total or “effective” volume is critical to the natural frequency of the isolator (Eq 1). Note that the pressure (P) is proportional to the load (W), thus maintaining a constant natural frequency even when the load changes. 典型的气浮减震器设计包含双重气囊（一个弹簧室和阻尼室）。在Fabreeka的设计中，阻尼室与弹簧室分离，通过一气管连接（见阻尼）。这个设计观念可以得到不同的形状，因为只有总的或有效的体积对于减震的自然频率才是关键的（见Eq 1）。注意压力（P）与载荷是成比例的，所以可以维持在一个恒定的自然频率即使当载荷发生变化的时候。 Where: Fn = natural frequency (Hz)自然频率（固有频率） g = gravity (in/sec2)重力加速度 n = rate of specific heat of gas at constant pressure and volume (1.4 for air) 在恒定...