Continuous Goal-Directed Actions (CGDA)

cgda

Description

The search for the Grial of generalizing robot actions continues! In Continuous Goal-Directed Actions (CGDA), our robot imitation framework, an action is modelled as the changes it produces on the environment. First, record all the features you can off some user demonstrations. By features, we mean features! The robot joint q2 angle, a human hand Z coordinate, the percentage of a wall painted, the square of the room temperature plus ambient noise… Throw in a demonstration and feature selection algorithm, let it decide which demonstrations were consistent, and which features are relevant. You now have an action encoded as a CGDA model, which is essentially a multi-dimensional time series. As described in its first conference paper, recognition can be performed using costs such as those extracted by DTW, and execution can be achieved by evolutionary algorithms in a simulated environment. While we have performed some work in combining sequences of random movements, we are mostly content with the evolutionary strategies we later developed, such as IET. Additional references include the original S. Morante PhD thesis.

Entries:
Diseño y simulación de un actuador de rigidez variable
Anales de Ingeniería Mecánica: Revista de la Asociación Española de Ingeniería Mecánica; ISSN: 0212-5072. num. 18 , vol. 1 , pages: 154 – 161 , 2012
A. Gimenez A. Jardon López, J. García, D.
Flexible shape memory alloy actuators for soft robotics: Modelling and control
International Journal of Advanced Robotic Systems . num. 1 , vol. 17 , pages: 1 – 15 , 2020
D. Copaci D. Blanco L. Moreno A. Martín-Clemente

Entries:
Smooth and Accurate control of multiple Shape Memory Alloys based actuators via low cost embedded hardware.
IEEE/RSJ International Conference on Intelligent Robots and Systems. IROS 2012, Vilamoura, Portugal
A. Flores D. Copaci D. Blanco L. Moreno
Lightweight Magnetorheological Based Clutch Actuator for quick response times
13th International Conference on New Actuators & 7th Exhibition on Samrt Actuators and Drive Systems., Bremen, Germany
A. Flores D. Copaci D. Blanco L. Moreno
Diseño de un controlador PID en NXT OSEK para el autoequilibrado de un robot sobre dos ruedas
II Congreso de Actividades Académicamente Dirigidas (CAADE 2011), Cordoba, Spain

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Robots

Robot types & applications