ALPHRED: A Multi-Modal Operations Quadruped Robot for Package Delivery Applications

Modern quadruped robots are more capable than ever before at performing robust, dynamic locomotion over a variety of terrains, but are still mostly used as mobile inspection platforms. This paper presents ALPHRED version 2, a multi-modal operations quadruped robot designed for both locomotion and manipulation. ALPHRED is equipped with high force bandwidth proprioceptive actuators and simple one degree of freedom end-effectors. Additionally, ALPHRED has a unique radially symmetric kinematic design that provides a superior end-effector workspace and allows the robot to reconfigure itself into different modes to accomplish different tasks. For locomotion tasks, ALPHRED is capable of fast dynamic trotting, continuous hopping and jumping, efficient rolling on passive caster wheels, and even has the potential for bipedal walking. For manipulation tasks, ALPHRED has a tripod mode that provides single arm manipulation capabilities that is strong enough to punch through a wooden board. Additionally, ALPHRED can go into a bipedal mode to allow for dual arm manipulation capable of picking up a box off a one meter tall table and placing it on the ground.

[1]  Andy Abate,et al.  Mechanical Antagonism in Legged Robots , 2016, Robotics: Science and Systems.

[2]  Jong Hyeon Park,et al.  Compliance/Impedance Control Strategy for Humanoids , 2018, Humanoid Robotics: A Reference.

[3]  Kyungdon Joo,et al.  Robot System of DRC‐HUBO+ and Control Strategy of Team KAIST in DARPA Robotics Challenge Finals , 2017, J. Field Robotics.

[4]  Dennis Hong,et al.  Investigation of a non-anthropomorphic bipedal robot with stability, agility, and simplicity , 2016, 2016 13th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI).

[5]  R. Murray,et al.  Proportional Derivative (PD) Control on the Euclidean Group , 1995 .

[6]  Suwoong Lee,et al.  Pushing methods for working six-legged robots capable of locomotion and manipulation in three modes , 2010, 2010 IEEE International Conference on Robotics and Automation.

[7]  Roland Siegwart,et al.  State Estimation for Legged Robots - Consistent Fusion of Leg Kinematics and IMU , 2012, Robotics: Science and Systems.

[8]  Toru Omata,et al.  Whole quadruped manipulation , 2002, Proceedings 2002 IEEE International Conference on Robotics and Automation (Cat. No.02CH37292).

[9]  Siddhartha S. Srinivasa,et al.  CHIMP, the CMU Highly Intelligent Mobile Platform , 2015, J. Field Robotics.

[10]  Alexander Leonessa,et al.  Straight-Leg Walking Through Underconstrained Whole-Body Control , 2017, 2018 IEEE International Conference on Robotics and Automation (ICRA).

[11]  Dennis Hong,et al.  Design, Modeling, and Analysis of a Liquid Cooled Proprioceptive Actuator for Legged Robots , 2019, 2019 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM).

[12]  James Hale.  PEI: Good things come in small packages. , 1987 .

[13]  Andy Ruina,et al.  DESIGN AND CONTROL OF RANGER: AN ENERGY-EFFICIENT, DYNAMIC WALKING ROBOT , 2012 .

[14]  Albert Wang,et al.  Actuator design for high force proprioceptive control in fast legged locomotion , 2012, 2012 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[15]  Kensuke Takita,et al.  Quadruped Walking Robot Centered Demining System - Development of TITAN-IX and its Operation- , 2005, Proceedings of the 2005 IEEE International Conference on Robotics and Automation.

[16]  Sethu Vijayakumar,et al.  Optimisation of Body-ground Contact for Augmenting the Whole-Body Loco-manipulation of Quadruped Robots , 2020, 2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

[17]  Richard M. Murray,et al.  A Mathematical Introduction to Robotic Manipulation , 1994 .

[18]  Dennis W. Hong,et al.  Stable, Autonomous, Unknown Terrain Locomotion for Quadrupeds Based on Visual Feedback and Mixed-Integer Convex Optimization , 2018, 2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

[19]  Dennis Hong,et al.  Implementation of a Versatile 3D ZMP Trajectory Optimization Algorithm on a Multi-Modal Legged Robotic Platform , 2018, 2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

[20]  Sangbae Kim,et al.  MIT Cheetah 3: Design and Control of a Robust, Dynamic Quadruped Robot , 2018, 2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

[21]  Daniel E. Koditschek,et al.  Design Principles for a Family of Direct-Drive Legged Robots , 2016, IEEE Robotics and Automation Letters.

[22]  Marc H. Raibert,et al.  Legged Robots That Balance , 1986, IEEE Expert.

[23]  Dennis Hong,et al.  A Proprioceptive, Force-Controlled, Non-Anthropomorphic Biped for Dynamic Locomotion , 2018, 2018 IEEE-RAS 18th International Conference on Humanoid Robots (Humanoids).

[24]  John J. Craig,et al.  Hybrid position/force control of manipulators , 1981 .

[25]  Tatsuo Arai,et al.  Control of walk and manipulation by a hexapod with integrated limb mechanism: MELMANTIS-1 , 2002, Proceedings 2002 IEEE International Conference on Robotics and Automation (Cat. No.02CH37292).

[26]  Sergey V. Drakunov,et al.  Capture Point: A Step toward Humanoid Push Recovery , 2006, 2006 6th IEEE-RAS International Conference on Humanoid Robots.

[27]  Dennis Hong,et al.  Online Trajectory Optimization for Legged Robotics Incorporating Vision for Dynamically Efficient and Safe Footstep Locations , 2019 .

[28]  Tatsuo Arai,et al.  Integrated Limb Mechanism Robot ASTERISK , 2006, J. Robotics Mechatronics.

[29]  Joshua Rosenberg Hooks,et al.  Real-Time Optimization for Control of a Multi-Modal Legged Robotic System , 2019 .