Legged robots that balance
Interactive spacetime control for animation
SIGGRAPH '92 Proceedings of the 19th annual conference on Computer graphics and interactive techniques
Hierarchical spacetime control
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
SIGGRAPH '95 Proceedings of the 22nd annual conference on Computer graphics and interactive techniques
Limit cycle control and its application to the animation of balancing and walking
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Physically based motion transformation
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
SIGGRAPH '88 Proceedings of the 15th annual conference on Computer graphics and interactive techniques
Composable controllers for physics-based character animation
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Motion capture-driven simulations that hit and react
Proceedings of the 2002 ACM SIGGRAPH/Eurographics symposium on Computer animation
Synthesis of complex dynamic character motion from simple animations
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
DyRT: dynamic response textures for real time deformation simulation with graphics hardware
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Dynamic Free-Form Deformations for Animation Synthesis
IEEE Transactions on Visualization and Computer Graphics
Efficient synthesis of physically valid human motion
ACM SIGGRAPH 2003 Papers
Simulation of leaping, tumbling, landing, and balancing humans
Simulation of leaping, tumbling, landing, and balancing humans
Motion Perturbation Based on Simple Neuromotor Control Models
PG '03 Proceedings of the 11th Pacific Conference on Computer Graphics and Applications
Synthesizing physically realistic human motion in low-dimensional, behavior-specific spaces
ACM SIGGRAPH 2004 Papers
Adaptation of performed ballistic motion
ACM Transactions on Graphics (TOG)
Interactive animation of dynamic manipulation
Proceedings of the 2006 ACM SIGGRAPH/Eurographics symposium on Computer animation
On the beat!: timing and tension for dynamic characters
SCA '07 Proceedings of the 2007 ACM SIGGRAPH/Eurographics symposium on Computer animation
Multiobjective control with frictional contacts
SCA '07 Proceedings of the 2007 ACM SIGGRAPH/Eurographics symposium on Computer animation
Constraint-based motion optimization using a statistical dynamic model
ACM SIGGRAPH 2007 papers
SIMBICON: simple biped locomotion control
ACM SIGGRAPH 2007 papers
Simulating biped behaviors from human motion data
ACM SIGGRAPH 2007 papers
Interactive simulation of stylized human locomotion
ACM SIGGRAPH 2008 papers
Animating responsive characters with dynamic constraints in near-unactuated coordinates
ACM SIGGRAPH Asia 2008 papers
Optimization-based interactive motion synthesis
ACM Transactions on Graphics (TOG)
Deformable object animation using reduced optimal control
ACM SIGGRAPH 2009 papers
ACM SIGGRAPH 2009 papers
Contact-aware nonlinear control of dynamic characters
ACM SIGGRAPH 2009 papers
Simulating balance recovery responses to trips based on biomechanical principles
Proceedings of the 2009 ACM SIGGRAPH/Eurographics Symposium on Computer Animation
Optimizing walking controllers
ACM SIGGRAPH Asia 2009 papers
Prioritized optimization for task-space control
IROS'09 Proceedings of the 2009 IEEE/RSJ international conference on Intelligent robots and systems
Robust physics-based locomotion using low-dimensional planning
ACM SIGGRAPH 2010 papers
Terrain-adaptive bipedal locomotion control
ACM SIGGRAPH 2010 papers
Optimizing walking controllers for uncertain inputs and environments
ACM SIGGRAPH 2010 papers
Optimal feedback control for character animation using an abstract model
ACM SIGGRAPH 2010 papers
ACM SIGGRAPH 2010 papers
Generalized biped walking control
ACM SIGGRAPH 2010 papers
Feature-based locomotion controllers
ACM SIGGRAPH 2010 papers
Using natural vibrations to guide control for locomotion
I3D '12 Proceedings of the ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games
Interactive Character Animation Using Simulated Physics: A State-of-the-Art Review
Computer Graphics Forum
Simple data-driven control for simulated bipeds
EUROSCA'12 Proceedings of the 11th ACM SIGGRAPH / Eurographics conference on Computer Animation
EUROSCA'12 Proceedings of the 11th ACM SIGGRAPH / Eurographics conference on Computer Animation
Simple data-driven control for simulated bipeds
Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Computer Animation
Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Computer Animation
Flexible muscle-based locomotion for bipedal creatures
ACM Transactions on Graphics (TOG)
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We present a novel control algorithm for simulating an articulated character performing a given reference motion and its variations. The unique feature of our controller is its ability to make a long-horizon plan at every time step. Our algorithm overcomes the computational hurdle by applying modal analysis on a time-varying linear dynamic system. We exploit the properties of modal coordinates in two ways. First, we design separate control strategies for dynamically decoupled modes. Second, our controller only applies long-horizon planning on a subset of modes, largely reducing the size of the control problem. With this decoupled and reduced control system, the character is able to execute the reference motion while reacting to unexpected perturbations and anticipating changes in the environment. We demonstrate our results by simulating a variety of reference motions, such as walking, squatting, jumping, and swinging.