在连续潮流法的基础上，结合经过改进的差异进化算法，通过对变量的组合优化，求取系统静态电压稳定安全裕度。
By combining the continuous power flow method with improved differential evolution calculation, the static voltage stability margin is found via optimal grouping of relevant variables.
控制算法采用改进的积分分离pid算法，实现了单自由度磁轴承的稳定悬浮。
Improved integration detach PID algorithm is adopted. One freedom magnetic bearing is stably suspended.
采用极限应变准则作为极限状态方程，运用改进的JC方法分析了地下隧洞稳定的可靠度。
In this paper the limit strain criterion is used as a limit state function and an improved JC method is used to calculate the reliability index of the stability of the tunnel.
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