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在对静、动态性能要求不高的小容量直流调速系统中,采用电压负反馈构成单闭环调速系统是比较经济的,同时引入电流正反馈,以补偿系统的静态速降,提高系统的调速指标。但是,这将引起系统的稳定性变差,因此,需要加入适当的校正网络,以改善系统的动态品质。从结构上看,上述系统是具有交错反馈的复杂系统,采用频率法进行动态分析和综合是比较困难的。本文以计算机作为辅助设计手段研究了(1) 合理地选择校正网络的参数;(2) 校正网络参数变化对系统动态品质的影响。本文的思路,对于设计类似系统是有参考价值的。
In the small capacity DC speed control system, which has low static and dynamic performance requirements, using the voltage negative feedback to form a single closed-loop speed control system is more economical. At the same time, the positive current feedback is introduced to compensate the system’s static speed drop and improve the system’s Speed indicators. However, this will cause the stability of the system to deteriorate. Therefore, an appropriate calibration network needs to be added to improve the dynamic quality of the system. From a structural point of view, the above system is a complex system with staggered feedback. It is difficult to analyze and synthesize dynamically using the frequency method. In this paper, computer as an aid to the design of the study (1) a reasonable choice to correct the parameters of the network; (2) to correct the network parameters of the dynamic quality of the system. The idea of this article, for the design of similar systems is of reference value.