可变负载 meaning in English

variable load
varying duty

Variable payload ship
可变负载船
In this dissertation , the development survey , research actualities and application prospect of vamt are introduced at first , and the models of kinematics , dynamics and linear motor servo are analyzed then . currently the dynamics model is complex or established mechanically , which restricts the study of control theories . thus this dissertation present a simple and easy - realized control idea , namely , the fore and torque of every leg determined by the inverse - solution of mechanics are regarded as changeable load force ( disturbance ) applied in motor , the elongation of the leg or displacement of sliding is regarded as the output of linear servo system
本文首先介绍了虚拟轴机床的发展概况、研究现状和应用前景，然后对其运动学、动力学、直线伺服系统模型进行分析，针对目前动力学模型过于复杂或完全从机构学角度建立不便于控制的问题，提出了简单、易于实现的控制思想，即将虚拟轴机床的动力学方程反解所确定的各杆受力(矩)视为电机的可变负载力，以杆长伸缩量或滑块位移为伺服系统输出，从此构成位置闭坏，实现轨迹跟踪控制。