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８０年代中期由德国鲁尔大学Ｍ．Ｄｅｐｅｎｂｒｏｃｋ教授提出的直接自控制方法，经过ＡＢＢ公司工程师的后续开发，已经成功地用于干线内燃和电力机车，如奥地利联邦铁路的１８２２和瑞士联邦铁路的４６０电力机车上。与７０年代初期提出的磁场定向控制相比，直接自控制有着同样优异的动态性能，但实现更为简单，对电机参数变化不敏感、功率器件的开关能力可得到最充分的发挥．本文根据其在现代交流传动机车上的应用，从理论到实践对这种控制策略作了较为系统的介绍。
Mid-80s by the German Ruhr University M. The direct self-control method proposed by Professor Depenbrock, developed by ABB engineers, has been successfully used on mainline internal combustion and electric locomotives, such as the Austrian Federal Railroad 1822 and the Swiss Federal Railways 460 electric locomotive. Compared with the field-oriented control proposed in the early 1970s, direct self-control has the same excellent dynamic performance, but it is simpler to implement and insensitive to the change of motor parameters. Therefore, the switching capability of power devices can be fully utilized. Based on its application in modern AC locomotive, this article makes a systematic introduction of this control strategy from theory to practice.