Journal
CIRP ANNALS-MANUFACTURING TECHNOLOGY
Volume 71, Issue 1, Pages 373-376Publisher
ELSEVIER
DOI: 10.1016/j.cirp.2022.04.040
Keywords
Feed drive; Active damping; Control
Funding
- NSERC [RGPIN-03879]
- NSERC-CANRIMT2 network [NETGP 479639-15]
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This paper presents a new control structure for ball screw drives, achieving position tracking and active vibration damping simultaneously, leading to improved dynamic stiffness and tracking accuracy compared to traditional methods.
This paper presents a new control structure for ball screw drives (BSDs), which achieves position tracking through an outer loop, and active vibration damping for dynamic stiffness enhancement through an inner loop based on H2-synthesis. As an advancement over earlier BSD control methods with active damping, the proposed technique is able to consider multiple vibration modes simultaneously, rather than only the most dominant (axial) vibration mode. The end result is 2-3 times reduced dynamic compliance over a wide frequency range, compared to approaches like P-PI position-velocity cascade control (industry standard) and pole-placement control (PPC), and comparable or better tracking accuracy. (c) 2022 CIRP. Published by Elsevier Ltd. All rights reserved.
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