A motor speed control system using dual-loop PLL and speed feed-forward/back

Hidekazu Mchida, M. Kambara, Kouta Tanaka, F. Kobayashi
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引用次数: 10

Abstract

PLL speed control systems can completely reject speed error and steady-state phase error for constant-speed inputs. Though it does not usually handle inputs including acceleration, the dual-loop scheme improves, as a feed-forward control system, rising time and phase error for acceleration input. However, since it is fundamentally a third-order PLL, it has slow rising up characteristics than speed feed-back, and cannot avoid over/undershoots. Nonetheless, the first loop has rapid rising up characteristics and no over/undershoot, since it is an ideal second-order PLL system. In this article, to solve the problem, we show a hybrid system of the dual-loop PLL and speed feed-forward/back. It has fast rising up characteristics and no over/undershoots thanks to the first and third PLL as F/V converter, which cannot be achieved in traditional PLL systems.
一种采用双环锁相环和速度前馈/反馈的电机速度控制系统
锁相环速度控制系统可以完全抑制恒速输入的速度误差和稳态相位误差。虽然它通常不处理包括加速度在内的输入,但作为前馈控制系统,双环方案改进了加速度输入的时间和相位误差上升。然而,由于它基本上是一个三阶锁相环,它具有比速度反馈缓慢的上升特性,并且无法避免过/欠冲。尽管如此,第一个环路具有快速上升特性,没有过冲/欠冲,因为它是一个理想的二阶锁相环系统。在本文中,为了解决这个问题,我们展示了一个双环锁相环和速度前馈/后馈的混合系统。由于第一和第三锁相环作为F/V变换器,它具有快速上升特性和无过/欠冲,这是传统锁相环系统无法实现的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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