The search method is used later together with direct solution for changing the search direct, let search method converges to a better solution faster.
然后再使用搜索算法，以直接解来改变搜索方向，使搜索算法更快收敛于一个较优解。
Based on the PID control theory and recent PID parameter tuning method, a tuning method using direct search optimization (LJ method) is designed.
本论文在PID控制理论及现有PID控制参数整定方法的基础上，设计使用随机数直接搜索法进行PID控制参数的寻优整定。
The results show that conic interpolation model method is an efficient direct search method. This should be further researched.
试验结果表明锥函数插值模型算法是一类有效的直接方法，值得进一步研究。
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