title: Feedback control of electrical stimulation electrode arrays.
abstract: Electrical stimulation electrode arrays are an emerging technology that enables muscles to be artificially contracted through the activation of their associated motor neurons. A principal application of electrical stimulation is to assist human motion for orthotic or therapeutic purposes. This paper develops a framework for the design of model-based electrode array feedback controllers that balance joint angle tracking performance with the degree of disturbance and modeling mismatch that can exist in the true underlying biomechanical system. This framework is used to develop a simplified control design procedure that is suitable for application in a clinical setting. Experimental results evaluate the feasibility of the control design approach through tests on ten participants using both fabric and polycarbonate electrode arrays.
authors.affiliation: Electronics and Computer Science, Faculty of Physical Science and Engineering, University of Southampton, Southampton SO17 1BJ, UK. Electronic address: cf@ecs.soton.ac.uk.
authors.forename: C T
authors.initials: CT
authors.lastname: Freeman
authors.affiliation: Electronics and Computer Science, Faculty of Physical Science and Engineering, University of Southampton, Southampton SO17 1BJ, UK. Electronic address: ky2@ecs.soton.ac.uk.
authors.forename: K
authors.initials: K
authors.lastname: Yang
authors.affiliation: Electronics and Computer Science, Faculty of Physical Science and Engineering, University of Southampton, Southampton SO17 1BJ, UK. Electronic address: mjt@ecs.soton.ac.uk.
authors.forename: J
authors.initials: J
authors.lastname: Tudor
authors.affiliation: Electronics and Computer Science, Faculty of Physical Science and Engineering, University of Southampton, Southampton SO17 1BJ, UK. Electronic address: mck1e12@ecs.soton.ac.uk.
authors.forename: M
authors.initials: M
authors.lastname: Kutlu
mesh_terms: D000328:Adult; D000368:Aged; D001132:Arm / Q000502:physiology; D001696:Biomechanical Phenomena; D004558:Electric Stimulation / Q000295:instrumentation*; D004566:Electrodes; D005246:Feedback; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009068:Movement
keywords: Assistive technology; Electrical stimulation; Electrode arrays; Feedback control