The all-digital ac frequency conversion control system based on the common DC bus can meet the requirements of high speed and high reliable control performance of the high-speed paper machine.
这种基于公共直流母线的全数字交流变频控制系统适用于高速纸机的高速度、高可靠性控制性能的需要。
This paper introduces rebuilding electric control system of portal crane drived by DC and the application of digital DC speed controller, PLC and touchable industrial graphic monitoring system.
简要介绍直流驱动的门机电控系统改造，包括数字式直流调速器、PLC和触摸式工业图形监控系统的应用。
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