大型港口机械电控技术的新发展

New developments in control technique of large port machinery

近年来国际上微电子和电力电子技术迅猛发展,从而使大型港口机械的电气装备不断地改进。本文就大型港口机械对电控技术的要求,介绍了全电子数字控制系统。对其组成部分:全数字化控制驱动装置、可编程序控制器、故障诊断及数据管理系统、数字化操纵给定检测等的性能特点、工作原理和应用等方面作了分析介绍。还对半自动操纵——最佳运行轨迹操纵和交流变频调速技术的应用作了介绍。

In recent years, mieroelectronie and power electronic technique experienced a rapid development, enabling the electric facilities of large port machinery to be ever improved. This paper investigates fully electronic digital control system taking into account the technical requirements set to electric control of large port machinery. The performance, working principle and application of the composing elements of the system, including driving device with fully digital control, programmable logic controller, fault diagnosis and data management system as well as digital master controller and setting value detection are given in the paper. The semi-automatic control-optimum travelling path control and the application of AC frequency speed control are also presented.