The controller with the filtering type or prediction type of reduced-orderobserver is used in the output feedback design of digital type 1 servosystem toreduce the order of the controller and admit one step computation delay.

• 使用滤波型或预测型降阶观测器的控制器被用于数字1型伺服系统的输出反馈设计中,以便降低控制器的阶数,并考虑一拍的运算延迟。