针对被控输出采样间隔大的系统 ,设计H∞ 最优推理控制器 .推理估计器与控制器的设计都基于推理控制系统I/O模型 ,简化了设计步骤和计算量 .多项式方程方法亦使H∞ 控制器直接利用LQG控制器的结果 ,并用灵敏度函数定量描述推理控制系统的鲁棒性 .该设计还适用于非最小相位与不稳定系统 . The H∞ optimal inference controller is designed for the system with large output sampling interval. The design of inference estimator and controller are based on reasoning control system I / O model, which simplifies the design steps and calculation. The polynomial equation method also makes The H∞ controller directly uses the LQG controller’s results and quantitatively describes the robustness of the inference control system using a sensitivity function.The design is also applicable to non-minimum phase and unstable systems.