Cleaning System Design

For the cleaning subsystem, several materials have been discussed for usage: felt, sponge and regular cloth. Based on our system design, we found out that felt is the best among all three choices. Sponge has a better softness but it can contain too much cleaners, which will leave marks on the window. Cloth is light, but the cleaning effect is bad. Felt has the right softness and cleaner saturation percentage, which is the most suitable choice for our project.