Misconceptions of PD control in animation
Authors: 
B. F. Allen, P. FaloutsosAuthors Info & Claims
Pages 231 - 234
Abstract
In this paper, we address certain misconceptions that have been perpetuated in the animation practice and research for quite some time related to the proportional-derivative (PD) control of physics-based systems. Because in animation we often think in terms of targeting keyframes, we tend to forget that PD control, in its simple form, has a very specific asymptotic behavior that approaches zero (or an offset) with zero velocity as time approaches infinity. We pay particular attention to the issue of introducing a "desired" or "end" velocity term in the equation of a proportional-derivative controller, and discuss how this term should be interpreted and how it relates to feedforward control rather than an end derivative problem.
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Misconceptions of PD control in animation
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- SIGGRAPH: ACM Special Interest Group on Computer Graphics and Interactive Techniques
- EUROGRAPHICS: The European Association for Computer Graphics
Publisher
Eurographics Association
Goslar, Germany
Publication History
Published: 29 July 2012
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- Research-article
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SCA '12
Sponsor:
- SIGGRAPH
- EUROGRAPHICS
SCA '12: The ACM SIGGRAPH / Eurographics Symposium on Computer Animation
July 29 - 31, 2012
Lausanne, Switzerland
Acceptance Rates
SCA '12 Paper Acceptance Rate 27 of 80 submissions, 34%;
Overall Acceptance Rate 183 of 487 submissions, 38%
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