Fig. 1 HSSs model More about this image found in HSSs model

Fig. 2 One operation scenario of the looper angle of hot strip rolling process in Nanjing, China using PID control More about this image found in One operation scenario of the looper angle of hot strip rolling process in ...

Fig. 3 The convergence of the Euclidean norm | | P k ε − P ε * | | and | | K k ε − K ε * | | More about this image found in The convergence of the Euclidean norm | | P k ε − P ε...

Fig. 4 Trajectory of the tracking error of the HSSs More about this image found in Trajectory of the tracking error of the HSSs

Fig. 5 State trajectory of the HSSs with the Algorithm 1 and with the PID control method More about this image found in State trajectory of the HSSs with the Algorithm 1 and with the PID control ...

Fig. 1 Basic configurations of FEHS: ( a ) the prototype of FEHS and ( b ) the structure diagram More about this image found in Basic configurations of FEHS: ( a ) the prototype of FEHS and ( b ) the str...

Fig. 2 The force diagram of FEHS More about this image found in The force diagram of FEHS

Fig. 3 The results of experiment and simulation More about this image found in The results of experiment and simulation

Fig. 4 The control flowchart More about this image found in The control flowchart

Fig. 5 The status information of FEHS: ( a ) the compression ratio without controller, ( b ) the compression ratio with PID controller, ( c ) the compression ratio with LADRC controller, and ( d ) the position of dead center More about this image found in The status information of FEHS: ( a ) the compression ratio without control...

Fig. 6 The phase diagram under different controllers: ( a ) LADRC controller and ( b ) PID controller More about this image found in The phase diagram under different controllers: ( a ) LADRC controller and (...

Fig. 7 The motion information of FEHS: ( a ) the displacement without controller, ( b ) the displacement with LADRC controller, ( c )the compression ratio with PID controller, and ( d ) the compression ratio with LADRC controller More about this image found in The motion information of FEHS: ( a ) the displacement without controller, ...

Fig. 1 (Left) The GO Lab ankle exoskeleton. (Right) Benchtop testing with load clamped to exoskeleton. The control box is located on a cart and is not shown in these photos. More about this image found in (Left) The GO Lab ankle exoskeleton. (Right) Benchtop testing with load cla...

Fig. 2 Experimentally measured piston length as a function of measured ankle angle. Over the range of angles used for the exoskeleton, the piston length is well approximated with a line. More about this image found in Experimentally measured piston length as a function of measured ankle angle...

Fig. 3 Benchtop position results. The left column shows the results for the staircase trajectory. The right column shows the results for the moving trajectory. The top row shows the angle while the bottom row shows the error. The maximum error occurs when the commanded position changes quickly. In... More about this image found in Benchtop position results. The left column shows the results for the stairc...

Fig. 4 Representative position controller results from human testing. The top plot shows the angle while the bottom plot shows the error. As expected, the error is highest for the resistive condition. Nevertheless, the error is acceptable for all three human testing conditions. More about this image found in Representative position controller results from human testing. The top plot...