Angular Center of Mass for Humanoid Robots

@article{Chen2022AngularCO,
  title={Angular Center of Mass for Humanoid Robots},
  author={Yu-Ming Chen and Gabriel M. Nelson and Robert J. Griffin and Michael Posa and Jerry E. Pratt},
  journal={ArXiv},
  year={2022},
  volume={abs/2210.08111}
}
The center of mass (CoM) has been widely used in planning and control for humanoid locomotion, because it carries key information about the position of a robot. In contrast, an ''angular center of mass'' (ACoM), which provides an ''average'' orientation of a robot, is less well-known in the community, although the concept has been in the literature for about a decade. In this paper, we introduce the ACoM from a CoM perspective. We optimize for an ACoM on the humanoid robot Nadia, and… 
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References

SHOWING 1-10 OF 29 REFERENCES

Whole-body motion planning with centroidal dynamics and full kinematics

This paper treats the dynamics of the robot in centroidal form and directly optimizing the joint trajectories for the actuated degrees of freedom to arrive at a method that enjoys simpler dynamics, while still having the expressiveness required to handle kinematic constraints such as collision avoidance or reaching to a target.

Optimal Reduced-order Modeling of Bipedal Locomotion

This work defines a class of reduced-order models and provides an algorithm for optimization within this class, and aims to automatically synthesize models that remain low-dimensional but retain the capabilities of the high-dimensional system.

Optimization‐based Full Body Control for the DARPA Robotics Challenge

We describe our full body humanoid control approach developed for the simulation phase of the DARPA Robotics Challenge (DRC), as well as the modifications made for the DARPA Robotics Challenge…

Study of dynamic biped locomotion on rugged terrain-derivation and application of the linear inverted pendulum mode

  • S. KajitaK. Tanie
  • Engineering
    Proceedings. 1991 IEEE International Conference on Robotics and Automation
  • 1991
Under the control method in the linear inverted pendulum mode, walking on a particular rugged ground is shown to be equivalent to Walking on a level ground, and it is shown that the additional use of the ankle torque makes the proposed control scheme robust and applicable to a real biped robot with mass legs.

Three-dimensional bipedal walking control using Divergent Component of Motion

Based on eCMP, VRP and DCM, a method for real-time planning and control of DCM trajectories in 3D is presented and methods to guarantee feasibility of the finally commanded forces are proposed.

Improved Computation of the Humanoid Centroidal Dynamics and Application for Whole-Body Control

This paper motivates how centroidal momentum can be used as an aggregate descriptor of motion in order to ease whole-body motion authoring from a task-space perspective and presents improvements in terms of its generality, compactness, and efficiency in comparison to previous specialized algorithms.

Development of a biped walking robot compensating for three-axis moment by trunk motion

A control method of dynamic bipedwalking for a biped walking robot to compensate for the three-axis (pitch, roll and yaw-axis) moment on an arbitrary planned ZMP by trunk motion is introduced.

Straight-Leg Walking Through Underconstrained Whole-Body Control

This approach of under-specifying the motion objectives to the Atlas humanoid, allowing it to walk over a variety of terrain, is applied, and both experimental and simulation results and performance limitations and potential improvements are presented.

Hybrid Operational Space Control for Compliant Legged Systems

This paper introduces the concept of hybrid operational space control, a method that unifies kinematic tracking of individual joints with an inverse dynamics task space controller for the remainder…

MIT Cheetah 3: Design and Control of a Robust, Dynamic Quadruped Robot

A new leg design is presented that includes proprioceptive actuation on the abduction/adduction degrees of freedom in addition to an expanded range of motion on the hips and knees, and represents a promising step toward a platform capable of generalized dynamic legged locomotion.