Journal
TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES
Volume 29, Issue 3, Pages 1736-1750Publisher
Tubitak Scientific & Technological Research Council Turkey
DOI: 10.3906/elk-2006-68
Keywords
Analogy; Brayton-Moser; double inverted pendulum; linear quadratic regulator; optimal control; real time control
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This paper introduces a modeling framework based on power and control for mechanical systems with nonlinear, unstable, and under-actuated characteristics. By using an analogy between mechanical and electrical systems, the framework allows for precise transfer of results from electrical circuit synthesis to the mechanical domain. Experimental results validate that this framework is a new and advantageous modeling method, serving as a convenient alternative to the Lagrangian framework.
This paper is concerned with the modeling framework based on power and control for a mechanical system that has nonlinear, unstable, and under-actuated characteristic features, based on an analogy, which is developed by using the Brayton and Moser's (BM) equations between mechanical and electrical systems. The analogy is based on a mixed-potential function generalized for BM. The mixed-potential function for a cart -pole double inverted pendulum (CPDIP) system is used as a new building block for modeling, analysis, and controller design. The analogy allows for the exact transfer of results from electrical circuit synthesis and analysis to the mechanical domain. This paper focuses mainly on the development of the electrical equivalent circuit of CPDIP inspired by the power-based modeling framework. In this brief, a real time CPDIP experimental setup was modeled by using this framework and a linear quadratic regulator (LQR) controller was designed for the stabilization of the system. Experimental results validated that this framework can be used as a new and advantageous modeling method and is a convenient and practical alternative to the Lagrangian framework.
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