The performance of regulator is obtained by making of a number of experiments with the help of cutandtrymethod.
调速器的工作特性性能及结构参数通常是用试凑方法，通过诸多试验得到。
2
But fall exponent method is inconvenient in the data processing by computer as it needs cut-and -try estimation many times.
但由于落差指数法需经反复试算，给电算带来不便。
3
In light of traditional PID controller parameters optimization with manual cut-and-trymethod, a novel kind of PID parameters optimization strategy based on ACA (Ant Colony Algorithm) was proposed.