Dynamic mesh-based analysis of irradiance characteristics of solar simulator

Meng, Qingjuan; Li, Yanpeng; Gu, Yaxiu

doi:10.1117/12.2060645

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…The hydrodynamic force of the robot tail under different swing amplitude and frequency was calculated and analyzed. The dynamic grid technology was used to conduct the simulation and the DEFINE_CG_MOTION macro was used to define the dynamic grid to realize the rotation of tail root and tail segments [21]. The tail segments were connected by hinges and the tail root was fixed.…”

Section: Cfd Simulationmentioning

confidence: 99%

Dynamic tail modeling and motion analysis of a beaver-like robot

Chen,

Xu,

Wang

et al. 2024

Nonlinear Dyn

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The beaver-like underwater robot can crawl and swim, playing a significant role in the exploration of amphibious environments. Its fan-shaped tail can provide part of the forward power and maintain its motion stability. However, no mature dynamic modeling method is available to model its tail motion until now. This paper presents a segmented dynamic modeling approach to build the propulsion and lift models of a beaver-like robot tail. It combines hydrodynamics and material mechanics and forms the fan-shaped flexible dynamics modeling theory. A performance index is created to measure the motion performance of the tail, which provides a theoretical basis for describing and evaluating the tail function. Simulations and experiments are conducted to verify the tail dynamic model and the motion performance under different swing amplitude coefficients. The obtained optimal swing amplitude coefficient is 2, which lays the foundation for robot motion control. The study could further promote the development of dynamic modeling and analysis for other underwater biomimetic robots.

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Section: Cfd Simulationmentioning

confidence: 99%

Dynamic tail modeling and motion analysis of a beaver-like robot

Chen,

Xu,

Wang

et al. 2024

Nonlinear Dyn

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“…As a device for simulating the solar radiation environment in space in the laboratory, the solar simulator can simulate the radiation and geometric characteristics of the sun. 1 It has been widely used in the fields of thermal balance experiment of spacecraft, calibration of solar photovoltaic modules, test and calibration of satellite attitude components, remote sensing technology, and solar spectrum irradiation simulation in meteorological radiation instrument verification. With the development of related technical research in the field of deep space exploration, the structural appearance of spacecraft is becoming more and more complex, and the large-irradiated surface solar simulator has more obvious advantages in spacecraft space environment simulation experiments.…”

Section: Introductionmentioning

confidence: 99%

Overall study of solar simulation optical system with large irradiated surface using free-form concentrator to improve uniformity

Liu,

Zhang,

Zhang

et al. 2023

iScience

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Optical design of a solar simulator for meteorological fields to improve irradiance uniformity and expand the range of irradiation regulation

et al. 2022

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Aiming at the problems of low irradiation uniformity and a narrow irradiance regulation range in the existing solar simulators, an optical design method for meteorological solar simulators with high irradiation uniformity and wide-range irradiance is proposed. Using a xenon lamp and a variable coefficient non-coaxial ellipsoid reflector as the concentrator system, we analyze the causes of stray light in the optical integrator. The optimal design method of the integrator based on the anti-crosstalk diaphragm and the light propagation matrix model, which effectively suppress the stray light, is proposed. The irradiance regulation system is designed to continuously regulate the irradiance in a wide range. The optimal design method of the collimated system is given. The rationality of the system design is verified by the simulation of LightTools software. The results show that within the effective irradiation surface of 100 m m × 100 m m , the irradiance is continuously adjustable in the range of 100 − 1400 W / m 2 , and the irradiation uniformity is better than 99.10% under different irradiances. This research breaks through the limitations of low irradiation uniformity and a narrow irradiance adjustment range of traditional meteorological solar simulators and can provide accurate and reliable solar irradiance for the verification and calibration of pyranometers.

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Dynamic mesh-based analysis of irradiance characteristics of solar simulator

Cited by 4 publications

References 8 publications

Dynamic tail modeling and motion analysis of a beaver-like robot

Dynamic tail modeling and motion analysis of a beaver-like robot

Overall study of solar simulation optical system with large irradiated surface using free-form concentrator to improve uniformity

Optical design of a solar simulator for meteorological fields to improve irradiance uniformity and expand the range of irradiation regulation

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