本文主要研究了直接驱动永磁同步电机转台系统的伺服刚度问题。
The dissertation mainly discusses the servo stiffness of direct drive NC rotary table servo system.
论文首先针对直线电机进给系统伺服刚度的特点，提出了直线电机进给系统伺服刚度的定义和评价方法。
Firstly, the definition and evaluation method is brought forward since the servo stiffness of the linear motor drives takes on new features.
实验结果表明，直线电动机的伺服刚度只受位置环比例增益的影响较大，而其它的控制参数对伺服刚度幅值影响不大。
The result presents that the servo rigidity is more influenced by proportion plus of position loop than by other parameters.
应用特征方程反问题的直接方法对舵面-液压伺服机构连接刚度参数进行了辨识。
The parameter identification of joining stiffness of rudder hydraulic servo mechanism can be done by using the direct method of characteristic equation anti problem.
确定伺服进给系统综合拉压刚度的构成因素对设计工作提供了理论依据。
Determining composing factors of comprehensive pull-pressing rigidity of servo feed system provide a theory basis for design work.
轧机伺服压下系统具有轧制力大的特点，其位移反馈机构的动刚度对系统的影响应予以考虑。
The servo screwdown system of a rolling mill has the characteristics of big rolling force, the influence of displacement feedback apparatus dynamic stiffness on system should be considered.
伺服进给系统的综合拉压刚度由伺服驱动系统刚度和机械传动系统刚度组成，其各自又受多项因素的影响。
Servo feed system comprehensive pull-pressing rigidity is made up of the rigidity of servo drive system and the rigidity of mechanical transmission system, and each is affected by multiple factors.
伺服进给系统的综合拉压刚度由伺服驱动系统刚度和机械传动系统刚度组成，其各自又受多项因素的影响。
Servo feed system comprehensive pull-pressing rigidity is made up of the rigidity of servo drive system and the rigidity of mechanical transmission system, and each is affected by multiple factors.
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