Automatic Control Applied to Servosystems. Influence of the State Transition Matrix in Functional Variables of DC Motors Used in Myoelectric Prostheses

Abstract

Participation of Engineering in sciences that affect people’s lives has generated relatively new disciplines. Rehabilitation is the biomedical area that produces most impact. Technological developments help people with some functional losses and encourage them to participate in their societies. We present an alternative mathematical analysis applied to servomotors that drive biomechanical prostheses by using the State Transition Matrix according to modern control criteria. It allows work in state-space where it´s possible to find new information to enrich conclusions of research. Some properties quantification are required to perform necessary movements in agreement to manipulation of control signal variables that must be implemented. Work points placed on the left side of the complex plane, relevant theoretical gains, as well as time response graphs, will be new parametric indicators. Obtained results show the importance of the state transition matrix used as a control tool in functional analysis of drive systems applied to prostheses, as much as it is needed to each particular case, meaning to each individual patient.