Actuators 3 Air 3 Air floating roller 3 Cascade control 3 Cascade control systems 3 Errors 3 Estimation algorithm 3 Floating roller 3 Radius estimation 3 Radius estimation algorithm 3 Roll to Roll 3 Roll-to-roll (R2R) 3 Rollers (machine components) 3 Speed 3 Tension controls 3 Web handling 3 air floating roller 3 cascade control 3 radius estimation algorithm 3 roll-to-roll (R2R) 3 tension control 3 velocity control 3 Technology: general issues 2 Mechanical engineering & materials 1 color mark detection 1 electrochromic devices (ECD) 1 flexible electronics 1 industrial printing 1 multilayer 1 optical transmittance 1