讨论了二阶模型的速度伺服系统和三阶模型的位置伺服系统基于ＩＴＡＥ准则的参数寻优问题，并推广到ｎ阶，给出优化参数一般表达式。......

Rapid technological developments in computed tomography(CT)imaging technique have made coronary CT angiography an attrac......