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Smart Structures and Systems Volume 16, Number 1, July 2015 , pages 027-46 DOI: https://doi.org/10.12989/sss.2015.16.1.027 |
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A general method for active surface adjustment of cable net structures with smart actuators |
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Zuowei Wang and Tuanjie Li
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| Abstract | ||
| Active surface adjustment of cable net structures is becoming significant when large-size cable net structures are widely applied in various fields, especially in satellite antennas. A general-duty adjustment method based on active cables is proposed to achieve active surface adjustment or surface profile reconfiguration of cable net structures. Piezoelectric actuators and voice coil actuators are selected for constructing active cable structures and their simplified mechanical models are proposed. A bilevel optimization model of active surface adjustment is proposed based on the nonlinear static model established by the direct stiffness method. A pattern search algorithm combined with the trust region method is developed to solve this optimization problem. Numerical examples of a parabolic cable net reflector are analyzed and different distribution types of active cables are compared. | ||
| Key Words | ||
| active surface adjustment; cable net structure; smart actuator; direct stiffness method; pattern search algorithm | ||
| Address | ||
| Zuowei Wang and Tuanjie Li: School of Electromechanical Engineering, Xidian University,2 South Taibai Road, Xi\'an, Shaanxi 710071, China | ||