Experimental results show that the system are reasonable designed and can achieve good speed adjusting performance.
试验结果表明该系统设计合理，具有良好的调速性能。
On the basis of modern control theory, the quadratic performance index was selected to design SCR DC speed-adjusting system.
本文以现代控制理论为基础，选用二次型性能指标设计可控硅直流调速系统。
Furthermore, different polygonal flux linkage locus's fluent switching point is also found, which overcomes the motor 'switching failure and improves the speed adjusting dynamic performance.
并找出了不同磁链轨迹间的平滑切换点，解决了切换时的电动机失步问题，提高了系统转速调节的动态性能。
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