By the reaching condition, the stability of fuzzy controllers is assured.
根据到达条件，模糊逻辑控制的稳定性得以保证。
参考来源 - 变结构控制理论若干问题研究及其应用·2,447,543篇论文数据，部分数据来源于NoteExpress
第二步即设计切换控制律，保证到达条件和滑动条件。
The second step is to determine a switched control law to guarantee the reaching and sliding condition.
以变速趋近律为到达条件，可产生扇形切换区，并可期待原点的稳定性。
The special feature of variable rate reaching law is that it is directly proportional to the norm of state vector and can result in a sector-shaped switching region.
同时，在离散的情况下，滑动模态的性质、存在条件及其到达条件都己经改变，因此研究离散系统变结构控制方法对降低抖振具有重要的理论价值和实际意义。
The state trajectory of system is chattering, which restrict it's actual applications. In the circumstances, the arrival condition and the existence condition have been changed .
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