如今导弹和飞机空气动力翼面的操纵通常多由液压执行机构来实现,这是因为液压执行机构动力性能高,相对地重量轻及体积小。离合器型伺服机构已被发展作这种应用,但是常常由于可靠性不足已不得不放弃。近来,大量的燃气操作的执行机构被发展来用于高温或辐射的环境,在这样的环境里常常发现液压系统是不可靠的或完全不能工作的。很少把电伺服系统作为典型的2-10马力的执行机构来应用,因为就体积、重量及动力性能来看,它们比液压系统差。然而,随着电能的固态控制装置的出现,有可能发展一种用来操纵翼面动作的高可靠性的电伺服系统。在新近乔因特自动控制会议上,牛顿和诺斯契提出的一篇有益的论文中探究了发展非传统的电气装置的理论上的可能性,以满足由导弹控制翼面作用而承担的性 Today, missile and aircraft aerodynamic wing surfaces are often operated by hydraulic actuators because of their high dynamic performance, their relatively light weight and small size. Clutch-type servos have been developed for this application, but often have to be dropped due to lack of reliability. Recently, a large number of gas-operated actuators have been developed for use in high-temperature or radiant environments where it is often found that hydraulic systems are either unreliable or totally inoperable. Electrical servo systems are rarely used as a typical 2-10 horsepower actuator because they are worse than hydraulic systems in terms of size, weight and power performance. However, with the advent of solid state control devices for electrical energy, it is possible to develop a highly reliable electro-servo system for maneuvering airfoil motion. In a helpful paper by Newton and Northsea at a recent Johnson Controls Conference, the theoretical possibility of developing non-traditional electrical devices was explored to meet the requirements of missile-controlled airfoil effects