In this paper, we present a frequency domain data-driven feedback control design methodology for the design of tracking controllers for hard disk drives with two-stage actuator as a part of the open invited track 'Benchmark Problem on Control System Design of Hard Disk Drive with a Dual-Stage Actuator' in the IFAC World Congress 2023 (Yokohoma, Japan). The benchmark models are Compared to the traditional controller design, we improve robustness and avoid model mismatch by using multiple frequency response plant measurements directly instead of plant models. Disturbance rejection and corresponding error minimization is posed as an H2 norm minimization problem with H infinity and H2 norm constraints. H infinity norm constraints are used to shape the closed loop transfer functions and ensure closed loop stability and H2 norm constraints are used to constrain and/or minimize the variance of relevant.

翻译：本文针对2023年IFAC世界大会（日本横滨）开放特邀专题“双级执行器硬盘驱动器控制系统设计基准问题”，提出一种频域数据驱动反馈控制设计方法，用于开发双级执行器硬盘驱动器中的跟踪控制器。与传统控制器设计相比，我们直接利用多次频率响应实测数据而非系统模型，从而提升鲁棒性并避免模型失配。干扰抑制及相应误差最小化被表述为具有H∞范数与H2范数约束的H2范数最小化问题。其中，H∞范数约束用于塑造闭环传递函数并确保闭环稳定性，而H2范数约束则用于约束和/或最小化相关变量的方差。