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Learning Control Methods and Applications

From Fachgebiet Regelungssysteme TU Berlin

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Iterative Learning Control for Variable-Pass-Length Systems

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A number of potential applications of iterative learning control do not fulfill the standard assumption of a uniform pass length, i.e. a constant trial duration. We extend the available methods to the case in which the pass length varies arbitrarlily and unpredictably from trial to trial.more

Adaptive Drop Foot Neuroprostheses

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Neuromuscular stimulation is used in the rehabilitation of stroke patients to support weak dorsiflexion of the foot. Since FES dynamics are highly individual and time-varying, the use of closed-loop control methods is required to generate precise motions. For this particular application, we are developing control schemes inspired by Iterative Learning Control.more

Noninvasive Blood Pressure Tracking

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A noninvasive continuous blood pressure measurement technique that has been developed lately requires precise control of the blood flow through a superficial artery. This project is concerned with the design and evaluation of advanced controllers that are precise enough to enable the indirect measurement principle.more

Trajectory Tracking on a Gantry Crane

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In this project, we apply Iterative Learning Control to trajectory tracking on a lab-scaled gantry crane. However, in constrast to previous work, we assume that the load is only allowed to move in the close proximity of the reference trajectory. Since these output constraints lead to disrupted trials, the pass length in this ILC system is not constant.more

4DoF Gait Neuroprostheses

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In order to support knee flexion/extension as well as foot dorsiflexion, plantarflexion and eversion, we develop multichannel gait neuroprostheses. The stimulation intensities are adjusted from stride to stride based on inertial sensor measurements and a decentralized iterative learning control scheme.more

Learning Vector Fields for Arm Rehabilitation

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We consider the combination of a cable-driven arm robotic system and neuromuscular stimulation for upper limb rehabilitation. In order to support motions of the patient's arm in the horizontal plane, we adjust the stimulation intensities using iterative learning vector fields.more

Swing-Up of an Inverted Pendulum

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In the presence of large measurement delays, pendulum swing-up cannot be achieved by immediate feedback. However, learning control methods can be used to swing up the pendulum in a few trials.more

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