多余力

• At present , most load systems in china are fluid drive systems ; this paper solves two main difficulties in electro - motion system : the realization of speediness and the elimination of the superabundant torque . it can provide some new information in load system ' s further investigation
  国内现有的加载系统多为液压加载，本文的研究工作解决了电动加载的两个主要难点：快速性的实现和多余力的消除，对加载系统的研究有一定的参考价值。
• In this dissertation , the author builds up mathematical model of the electro - hydraulic load simulator of fin stabilizer , obtaining the mechanism and characteristics of surplus force through analyzing the mathematical model of the electro - hydraulic load simulator . the conclusion is obtained that the surplus force is influenced by speed and acceleration of the electro - hydraulic load simulator
  从动力元件的动静态特性出发，揭示多余力的产生机理和本质特征，分析多余力的影响因素及多余力对加载系统控制性能的影响作用，寻找最有效的克服多余力、提高控制性能的途径。
• Based on the mathematical expression , the paper researches the factors which influence the surplus force . a feed - forward compensation method with the structure invariance theory is brought forward and it effectively reduces the surplus force . the paper analyses the coupling of multi - channel harmony loading system and constructs its mathematical model
  论文结合多余力产生的机理以及多余力产生的数学表达式，研究了影响多余力的因素，采用结构不变性原理对其进行了前馈补偿，仿真效果表明，采用的控制策略是可行的。
• Driving elements of fin stabilizer are designed and the simulation about characteristics of surplus force , loading system with or without disturbance , static or dynamic state is done . the relationship between the dynamic characteristics of servo valve and loading system " s control performance , loading gradient and loading system " s control performance is analyzed
  设计了减摇鳍电液负载仿真台动力元件，利用相关软件对加载系统多余力特性、有扰及无扰特性、动态及静态特性等控制性能进行了仿真分析，并分析了加载梯度、伺服阀动态特性与加载系统控制性能之间的关系。
• So how to minish the surplus torque by selecting proper control strategy is a main aspect discussed in this paper . by applying the structure invariant theory in the control strategy , an equivalent structure invariant loading system is produced , which proved to be very effective in reducing the redundant force
  论文阐述了多余力产生的机理，研究了影响多余力的因素，在控制策略方面，采用了结构不变性原理，建立加载系统等效的结构不变性系统，从根本上来减小多余力的影响。
• Basing on the analysis about the reason that how the superabundant torque appears , direct torque control strategy is used to realize the servo control of two asynchronous motors and load system ' s simulation . the measure method of superabundant torque of the system , the valid method of static state torque and the benchmark of dynamic torque are given by testifying the system ' s speediness through experiments
  在具体分析加载系统中多余力产生原因的基础上，采用直接转矩控制策略，实现了两台异步电动机伺服控制和加载系统的负载模拟实验，通过实验验证了系统的快速性；给出了系统多余转动惯量的测量、静态转矩的校验和动态转矩基准的实验的基本方案。
• Some effective methods are given out to eliminate the extra force in this paper , such as variable structure pid control , position compensation , and velocity feedback . they greatly improve the performance of the loading system . but for the full - loading of fore - landing gear , it still ca n ' t meet the loading precision completely
  为了克服多余力，本文采用了变结构的pid控制及位置补偿、速度反馈等方法，对于主起全载和前起半载试验，取得了良好的效果；而对于前起全载试验，在进一步采用对给定载荷谱进行滤波，模糊控制等方法后仍不能完全满足要求的性能指标，在加载试验研制总结中简单分析了其原因。
• Firstly , after analyzing the generated mechanism of surplus power , it can be found that surplus power affects the capability of loading seriously . secondly , according to the classical control theory , analyzes the capability of system and adopts pid and interfere compensation to eliminate the effects of the surplus power
  本论文首先分析了加载系统的加载原理，和多余力的产生机理和本质特性，得出多余力严重影响加载系统的加载性能，并且这种多余力是由于承载对象的位置变化引起的。