RT Journal Article
T1 Creep and Hysteresis Compensation in Pressure-Sensitive Mats for Improving Center-of-Pressure Measurements
A1 Martínez-Cesteros, Javier
A1 Medrano-Sánchez, Carlos
A1 Castellanos-Ramos, Julián
A1 Sánchez-Durán, José Antonio
A1 Plaza-García, Inmaculada
A1 martinez cesteros, 
K1 Tacto
K1 Detectores
AB Large-area tactile sensors are used to image the pressure exerted by human body parts. More specifically, they can be used to measure plantar pressure on human stability tests. The center-of-pressure (CoP) trajectory is the primary outcome of such tests. Previous research has shown that the parameters obtained from the trajectory correlate with those obtained from a reference instrument, that is, a force platform (FP). However, there are still noticeable differences. In this work, a low-cost prototype of a pressure- sensitive mat (PSM) has been built and compared with an FP in stability tests. The sensitive material is Velostat, which is readily available. Such a mat could make objective stability tests more accessible. A model of two nonlinear effects, hysteresis and creep, has been considered to compensate for them. Given that it was rather difficult to characterize the large mat with a pneumatic device, a small-sized sensor array was first characterized in a controlled environment. Then the model was extended to the large mat using a suitable scaling factor. The experimental results show that compensating for the nonlinear effects led to a decrease in the differences between the two instruments, the FP and the mat, with an average improvement of 26% in the distance between the trajectories.
PB IEEE
YR 2023
FD 2023
LK https://hdl.handle.net/10630/32699
UL https://hdl.handle.net/10630/32699
LA eng
NO J. Martínez-Cesteros, C. Medrano-Sánchez, J. Castellanos-Ramos, J. A. Sánchez-Durán and I. Plaza-García, "Creep and Hysteresis Compensation in Pressure-Sensitive Mats for Improving Center-of-Pressure Measurements," in IEEE Sensors Journal, vol. 23, no. 23, pp. 29585-29593, 1 Dec.1, 2023, doi: 10.1109/JSEN.2023.3324363
NO Universidad de MálagaMCIN/AEI/10.13039/501100011033ERDF A way of making Europe PID2021-125091OB-I0010.13039/501100010067 Departamento de Ciencia, Universidad y Sociedad del Conocimiento del Gobierno de Aragón T49_20R10.13039/100014440 Ministerio de Ciencia, Innovación y Universidades FPU-18/04282
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026