Identification and nonlinear control of a ball-plate system using neural networks

Bigharaz, Mohammad Hossein; Safaei, Farhad; Afshar, Ahmad; Suratgar, Amir Abolfazl

doi:10.1109/icciautom.2013.6912845

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…Research on the topic is sparse, showing a clear opportunity to develop a novel solution to this traditional problem. In 2013, a publication by Bigharaz et al (2013) discussed a neural network-based controller for application to a ball-plate system. It received the ball and plate states as inputs as well as motor control signals as outputs.…”

Section: Background and Literature Reviewmentioning

confidence: 99%

Applying Deep Reinforcement Learning to Cable Driven Parallel Robots for Balancing Unstable Loads: A Ball Case Study

Grimshaw

Oyekan

2021

Front. Robot. AI

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The current pandemic has highlighted the need for rapid construction of structures to treat patients and ensure manufacturing of health care products such as vaccines. In order to achieve this, rapid transportation of construction materials from staging area to deposition is needed. In the future, this could be achieved through automated construction sites that make use of robots. Toward this, in this paper a cable driven parallel manipulator (CDPM) is designed and built to balance a highly unstable load, a ball plate system. The system consists of eight cables attached to the end effector plate that can be extended or retracted to actuate movement of the plate. The hardware for the system was designed and built utilizing modern manufacturing processes. A camera system was designed using image recognition to identify the ball pose on the plate. The hardware was used to inform the development of a control system consisting of a reinforcement-learning trained neural network controller that outputs the desired platform response. A nested PID controller for each motor attached to each cable was used to realize the desired response. For the neural network controller, three different model structures were compared to assess the impact of varying model complexity. It was seen that less complex structures resulted in a slower response that was less flexible and more complex structures output a high frequency oscillation of the actuation signal resulting in an unresponsive system. It was concluded that the system showed promise for future development with the potential to improve on the state of the art.

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Section: Background and Literature Reviewmentioning

confidence: 99%