Optimal Decoupled Disturbance Observers for Dual-input Single-output Systems
نویسندگان
چکیده
The disturbance observer (DOB) has been a popular robust control approach for servo enhancement in single-input single-output systems. This paper presents a new extension of the DOB idea to dualand multi-input single-output systems, and discusses an optimal filter design technique for the related loop shaping. The proposed decoupled disturbance observer (DDOB) provides the flexibility to use the most suitable actuators for compensating disturbances with different spectral characteristics. Such a generalization is helpful, e.g., for modern dual-stage hard disk drives, where enhanced servo design is becoming more and more essential in the presence of vibration disturbances. keywords: MISO systems, dual-stage hard disk drives, disturbance observer, audio vibration, optimal filter design
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Decoupled Disturbance Observers for Dual-input-single-output Systems with Application to Vibration Rejection in Dual-stage Hard Disk Drives
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