ISS Node 2 TCS Design and Development

Valenzano, G.; Lombardi, Silvia; Prever, Elena Brach; Iannazzo, Sergio

doi:10.4271/981773

Cited by 1 publication

(1 citation statement)

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“…Research on the control strategy of thermal control systems in space stations has focused on ITCS loops, which consist of system flow control assemblies, three-way mixing valves (TWMV), rack flow control assemblies (RFCA), cold plates, pressure sensors, temperature sensors, pump bypass assemblies (PBA), and heat exchangers [ 9 ]. The control algorithm used in thermal control systems in space stations is mainly a traditional PID control algorithm [ 10 , 11 , 12 , 13 , 14 ]. In the Columbus module there are two pairs of mixing valves in the water loop cooling system which are controlled by PID regulators to hold temperature set points.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis and Intelligent Control Strategy for the Internal Thermal Control Fluid Loop of Scientific Experimental Racks in Space Stations

Cai

Wei

et al. 2020

Entropy

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Scientific experimental racks are an indispensable supporter in space stations for experiments with regard to meeting different temperature and humidity requirements. The diversity of experiments brings enormous challenges to the thermal control system of racks. This paper presents an indirect coupling thermal control single-phase fluid loop system for scientific experimental racks, along with fuzzy incremental control strategies. A dynamic model of the thermal control system is built, and three control strategies for it, with different inputs and outputs, are simulated. A comparison of the calculated results showed that pump speed and outlet temperature of the cold plate branch are, respectively, the best choice for the control variable and controlled variable in the controller. It showed that an indirect coupling thermal control fluid loop system with a fuzzy incremental controller is feasible for the thermal control of scientific experimental racks in space stations.

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