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  As long as one motor provides speed feedback, while the other motor receives the desired rotor voltage. It can be considered that the DC system is the easiest to achieve load balancing conditions. Since a DC motor has two independent windings for its control, it is difficult to adjust and match the parameters of the rotor and the excitation loop. As a rule of thumb, the resistance of the field windings and the rotor rheostat should be approximately equal to the resistance of the motor's own field windings and rotor. For large-scale installation and operation, the system needs to be more simplified. Many metal manufacturers and automation plants with DC motor prefer to use such systems, and installation and start up in this way have become increasingly safe and reliable. More advanced technological manufacturing systems often require multiple drives to work together with great precision. No external adjustment matching is required to achieve load sharing here. A general control method is the use of torque speed tracker, many AC and DC drive device manufacturers have adopted this control idea.

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我喜欢自然，喜欢没有*的感觉。破土而出的小草，粼粼湖水，幽微的花香，舞动的柳条儿，对我总是有着磁铁般的吸引力，让我为之驻足，为之惊叹，它们的美是细小的，甚至微不足道，然而却是那样的质朴，透露出一种生命的自然气息。  

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