Formal Connections between Template and Anchor Models via Approximate Simulation
Formal Connections between Template and Anchor Models via Approximate Simulation
复制标题
通过近似模拟建立模板模型和锚模型之间的正式连接
DOI:
10.1109/humanoids43949.2019.9035022
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Lin, Hai
中科院分区:
文献类型:
--
作者:
Kurtz, Vince;da Silva, Rafael Rodrigues;Wensing, Patrick M.;Lin, Hai
Reduced-order template models like the Linear Inverted Pendulum (LIP) and Spring-Loaded Inverted Pendulum (SLIP) are widely used tools for controlling high-dimensional humanoid robots. However, connections between templates and whole-body models have lacked formal underpinnings, preventing formal guarantees when it comes to integrated controller design. We take a small step towards addressing this gap by considering the notion of approximate simulation. Derived from simulation relations for discrete transition systems in formal methods, approximate similarity means that the outputs of two systems can remain ε-close. In this paper, we consider the case of controlling a balancer via planning with the LIP model. We show that the balancer approximately simulates the LIP and derive linear constraints that are sufficient conditions for maintaining ground contact. This allows for rapid planning and replanning with the template model by solving a quadratic program that enforces contact constraints in the full model. We demonstrate the efficacy of this planning and control paradigm in a simulated push recovery scenario for a planar 4-link balancer.
DOI:
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发表时间:
2015
期刊:
International Conference on Hybrid Systems: Computation and Control
影响因子:
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作者:
M. Cecchini;Eric H. Rubin;Gideon M. Blumenthal;Kassa Ayalew;Howard A. Burris;M. Russell;Hildy Dillon;H. Lyerly;Gregory H. Reaman;S. Boerner;Patricia M. LoRusso
通讯作者:
Patricia M. LoRusso
DOI:
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发表时间:
2012
期刊:
American Control Conference
影响因子:
--
作者:
Min;Katie Byl
通讯作者:
Katie Byl
DOI:
--
发表时间:
2017
期刊:
Robotics: Science and Systems
影响因子:
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作者:
Michael Posa;T. Koolen;Russ Tedrake
通讯作者:
Russ Tedrake