Electronic line-shafting control for paper machine drives

Abstract

Abstract-The current synchronized motion control methods used in paper machine drives are not designed to possess the inter-shaft stiffness properties which were responsible for the coordinating force inherent in classical, mechanically coupled paper machines. Consequently, these controllers cannot easily maintain coordination for all operating conditions. This paper presents the application of an "electronic line-shafting" control technique which serves to replicate and even improve on the historical, mechanical line-shafted properties. This technique was tested on a four-shaft experimental setup to evaluate such control during periods of drive-limited torque as well as sectional drive load disturbances. The experimental results demonstrate that the "electronic line-shafting" technique significantly improves the coordination, robustness, and overall stability of paper machine drives subjected to realistic physical limitations.Index Terms-Multi-axis synchronization, paper machine control, relative stiffness control, virtual line-shaft control.

Diagnostics of potentially hazardous processes

“…Вместо этого широко практикуется установка индивидуальных приводов для каждого рабочего органа объекта управления [1][2][3][4]. Примером подобных сис-тем может служить привод бумагоделательной машины с отдельно установленными двигате-лями на каждом ведущем валике или группе валиков [5][6][7][8].…”

Coordinated control of linear object on linear manifold

“…Вместо этого широко практикуется установка индивидуальных приводов для каждого рабочего органа объекта управления [1][2][3][4]. Примером подобных сис-тем может служить привод бумагоделательной машины с отдельно установленными двигате-лями на каждом ведущем валике или группе валиков [5][6][7][8].…”

Coordination Control of Multiple Electrical Excited Synchronous Motors and Its Application in High-Power Metal-Rolling Systems

“…The dynamic model of driving devices is seldom or never considered in CMMSs when controllers are designed [2], [5], [12], [13], [16]- [21]. If the dynamic model of a driving device is fully considered, the dynamic performance of a system significantly improves.…”

“…In [6], an optimal synchronization for high-precision motion system was designed by introducing coupling and synchronization factors into the synchronization error. Many other control strategies have been adopted in this field, and they include adaptive control [7]- [9], fuzzy control [10], [11], electronic line-shafting control [12], [13], robust control [14]- [19], neural network control [20], gain-scheduled control [21], and model-free control [22].…”