Modeling and optimal design for static shape control of smart reflector using simulated annealing algorithm

Wang, Zhi; Cao, Yuyan; Zhao, Yongzhi; Wang, Zhichen

doi:10.1177/1045389x15577650

Cited by 8 publications

(3 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tanaka controlled surface shape of 300mm diameter, 1mm thickness secondary mirror model composed of aluminum alloy by piezo-electric stack actuators and surface shape error of 0.9mm in maximum was controlled by six linear actuators (Tanaka, 2014). Wang et al optimized placement of distributed piezo-electric actuators attached on a honeycomb sandwich reflector to reduce out-of-plane displacement caused by gravity (Wang et al, 2015).…”

Section: Methods Of Reducing Out-of-plane Thermal Deformationmentioning

confidence: 99%

Thermal deformation generated on a CFRP laminated reflector

Tanaka

Ikeda

Senba

2016

Mechanical Engineering Journal

View full text Add to dashboard Cite

Carbon Fiber Reinforced Plastic (CFRP) has high specific stiffness and its thermal deformation can be controlled by fiber orientation. Therefore, it is often adopted as a material of space observation systems. In this study, experiment, numerical and analytical calculation on thermal deformation of CFRP reflector models were conducted to investigate the characteristics of thermal deformation of CFRP reflectors (mirrors) for space observation systems. Two types of reflector models were manufactured, which were comprised of a quasi-isotropic CFRP laminate with and without an sprayed aluminum layer and a polyurethane layer on the top surface. The experimental results showed that the out-of-plane thermal deformation of the reflector model with the aluminum and polyurethane layers is considerably larger than that of the reflector model without the aluminum and polyurethane layers and maximum and minimum displacement were observed in specific directions. The result of the numerical calculation showed the same trend. Additionally, this trend was discussed analytically. Moreover, uncertainty of the structure and method of reducing out-of-plane displacement were discussed. When shape control to suppress thermal deformation of CFRP reflectors is considered, the result obtained in this work is important to determine the optimal placement of actuators.

show abstract

Section: Methods Of Reducing Out-of-plane Thermal Deformationmentioning

confidence: 99%

Thermal deformation generated on a CFRP laminated reflector

Tanaka

Ikeda

Senba

2016

Mechanical Engineering Journal

View full text Add to dashboard Cite

show abstract

“…Hill et al [27] used the elimination method to determine the optimal grouping of the PVDF actuators for a membrane reflector. Wang et al [28] studied the optimal design of actuator locations in a honeycomb mirror by using the Simulated Annealing Algorithm.…”

Section: Introductionmentioning

confidence: 99%

Shape Control of a Carbon Fiber-Reinforced Polymer Reflector and Placement Optimization of the Actuators

Wu,

Yang,

Liu

2024

Applied Sciences

View full text Add to dashboard Cite

In this study, a method for the active shape control for carbon fiber-reinforced polymer (CFRC) reflectors using piezoelectric lead zirconate titanate (PZT) actuators is proposed. According to this method, a finite element model considering higher transverse shear deformation with independent voltage degrees of freedom is formulated by the Hamilton principle. An optimal shape controller that minimizes the discrete root mean square (RMS) error of a reflecting surface is applied. Then, the optimal arrangements of the PZT actuators are determined by numerical optimization methods, which are developed by modifying the classical Genetic Algorithm, with both single and multi-objective optimizations being studied. In the single optimization formulation, the number of actuators is considered as a constraint, and the RMS error of the reflector is regarded as the optimizing target. A hybrid method that combines the gradient projection method with an adaptive Genetic Algorithm is proposed to solve this problem. In the multi-objective optimization, the residual RMS errors and power consumption of the actuators are considered as the optimization targets. Pareto optimal solutions are obtained by an improved multi-objective Genetic Algorithm. Numerical examples are provided to show the effectiveness of the proposed methods.

show abstract

“…10) Wang et al studied a method to optimize location of linear actuators which can apply transverse forces on a reflector to reduce given out-of-plane displacement of a honeycomb sandwich reflector. 11) These previous studies mentioned above provided a potential to realize high-precision reflector systems with controlling the surface shape. As mentioned before, to realize space-based CFRP reflectors, suppression of the out-of-plane thermal deformation is essential.…”

Section: Introductionmentioning

confidence: 99%

Suppression of Out-of-Plane Thermal Deformation of CFRP Reflectors by Linear Actuators

Tanaka

Ikeda

Goto

et al. 2018

AEROSPACE TECHNOLOGY JAPAN

View full text Add to dashboard Cite

Carbon fiber reinforced plastic (CFRP) is considered to be one of the possible materials for reflectors of space-based astronomical observation systems because of its high specific elasticity and low coefficient of thermal expansion. However, it was demonstrated that non-negligible out-of-plane thermal deformation would be generated on CFRP reflectors. In this study, capability of a method of suppressing the out-of-plane thermal deformation was examined. In the proposed method, surface shape of the reflectors was controlled by applying external forces with linear actuators so that RMS error due to the thermal deformation was minimized. As a result, it was shown that the out-of-plane thermal deformation caused by fiber orientation error in manufacturing process could be suppressed significantly by the proposed simple method. Sensitivity analysis on location of actuators and input forces was also performed and it was seen that the location of actuators and the input forces need to be controlled strictly to realize high precision surface shape control of CFRP reflectors.

show abstract

Modeling and optimal design for static shape control of smart reflector using simulated annealing algorithm

Cited by 8 publications

References 32 publications

Thermal deformation generated on a CFRP laminated reflector

Thermal deformation generated on a CFRP laminated reflector

Shape Control of a Carbon Fiber-Reinforced Polymer Reflector and Placement Optimization of the Actuators

Suppression of Out-of-Plane Thermal Deformation of CFRP Reflectors by Linear Actuators

Contact Info

Product

Resources

About