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:本文介绍了一种频域数据驱动反馈控制设计方法,用于设计双阶段致动器硬盘驱动器的跟踪控制器,作为2023年IFAC世界会议(日本横滨)邀请的公开竞赛题目之一。与传统的控制器设计相比,我们使用多个频率响应的测量值,而不是传统的模型预测,从而提高了鲁棒性,并避免了模型不匹配。通过H2范数最小化问题和H infinity范数和H2范数限制来实现干扰抑制和相应误差的最小化。H infinity范数约束用于塑造闭环传递函数,确保闭环稳定性,而H2范数限制用于限制和/或最小化相关方差。