performance n. 1.执行,实行,履行;完成;实现;偿还。 2.行为,动作,行动;工作。 3.性能;特性。 4.功绩;成绩。 5.演奏;弹奏;演出;(驯兽等的)表演;把戏。 6.【物理学】演绩。 a performance test 【机械工程】性能试验。 high performance 高度准确,性能优良。 an afternoon performance 午后的演出,日戏。 two performances a day 一天演两场。 a fine [wretched] performance 成绩好[坏]。 put a monkey through its performances 使猴子玩种种把戏。 performance in [of] horse-manship 马戏;马术表演。
Sequently it deals with frequency characteristics of the rudder and loading systems in matlab and simulate the system with 20 - sim . when improve the loading performance with adding the structure invariance principle to eliminate surplus force . to improve loading performance of loading system controlled by p - q servo - valve , this dissertation analyzes the uncertainties of electro - hydraulic load simulator , then designs a robust controller 在此基础上,应用matlab对舵机系统和加载系统进行频域分析,利用20 - sim软件完成对系统的时域仿真,并采用结构不变性原理来抑制多余力干扰,改善系统的加载性能。