The first parameter fildes is the open file descriptor returned from the function open(), referring to a specific device. 第一个参数fildes是函数open()返回的文件描述符,用于指称具体设备。
The controller designed by the proposed method can guarantee that the resultant closed-loop system is regular, impulse-free and stable in the normal condition as well as in the event of sensor failures and parameter uncertainties in descriptor systems. 利用该方法设计的动态控制器使所得闭环系统既使在执行器失效和有系统参数不确定的情况下也都是正则、无脉冲、稳定的。