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Sensor-based Dynamic Control of the Central Pattern Generator for Locomotion
2007 / IEEE / 1-4244-0920-9
This item was taken from the IEEE Conference ' Sensor-based Dynamic Control of the Central Pattern Generator for Locomotion ' We study the dynamic control of ongoing loco-motor patterns through the application of discrete pulses of electrical stimulation to the central pattern generator (CPG) for locomotion. Data is presented from a hardware model of the CPG demonstrating that stimulation causes brief deviations from the CPG's limit cycle activity. It has been shown that the characteristics of the deviation depend strongly on the phase of stimulation. This paper expands upon those previous results in two ways. Firstly, we provide a more detailed characterization of the limit cycle oscillators (LCOs) with the intent of resolving possible asymmetries. Secondly, we use sensory information from a biped robot's ""limbs"" to set the appropriate timing for the discrete pulse to correct the asymmetries, making it possible to take the computer out of the loop in the generation of the stimulus. Eventually, we believe this approach could lead to development of a neuroprosthetic device for restoring locomotion after paralysis or amputation.
Central Pattern Generator
Liquid Crystal On Silicon
Robot Sensing Systems
Limit Cycle Oscillators