一般基于电机稳态等效方程的闭环控制很难实现恒线速运行控制。
Generally, it is hard to realize constant velocity control by means of closed-loop control based on motor steady equivalent equation.
为了消除以上弊端，我们设想找出凸轮各磨削点移动速度规律，使凸轮作恒线速磨削。
In order to avoid those disadvantages, we assume that the CAM part rotates in different rates to make the speeds of every grinding point equal.
针对数控机床工件恒线速加工时的特殊要求，提出了一种应用于变频调速系统的恒线速控制方法。
Based on specific demand in machining process, a constant line speed control method is proposed, which is used in variable frequency speed control system.
高速度、大卷装、交流电机直接拖动经轴，并由plc控制，变频器实现无级调速，恒线速卷绕。
High speed, big package, ac motor drives beam directly, controlled by PLC. Stepless speed regulated by inverter, winding at a constant linear speed.
介绍的控制系统综合利用可编程控制，变频控制及PID控制来实现整经机在高速运行时的恒线速要求。
This paper introduces a control system which used to control a high speed sectional warper by taking advantage of PLC controller, general-purpose I. V. V.
在基于定子磁场定向的矢量控制恒线速运行控制方案的基础上，提出了一个速度闭环、磁链闭环的矢量控制方案。
Then a vector control method with speed closed-loop and magnetic linkage closed loops put forward, which is based on the constant velocity by means of stator flux-oriented vector control.
在基于定子磁场定向的矢量控制恒线速运行控制方案的基础上，提出了一个速度闭环、磁链闭环的矢量控制方案。
Then a vector control method with speed closed-loop and magnetic linkage closed loops put forward, which is based on the constant velocity by means of stator flux-oriented vector control.
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