Development of Leg Control Mechanisms for A Radially Symmetric Octopedal Robot
Cadets J. Lento, Z. Huson, David L. Livingston, J. A. Haass, Mike Reilley, Jendi Bade Shrestha
- 发表年份
- 2005
- 引用次数
- 2
摘要
As the initial stage of a project to create an eightlegged walking robot, a three jointed robot leg was built, with a servomotor controlling the angle of each joint. Driving the servomotors to produce a useful gait required solving the inverse kinematic problem of deriving joint angles for a desired endeffector (foot) position, which is highly underdetermined. The two most promising candidate solutions, involving neuralnetwork controllers for the motors, failed because of an inadequate appreciation of the limitations on the possible positions of the foot. An analytic solution was subsequently obtained by artificially limiting the joint angles, resulting in a useful if limited gait. Taken together these results suggest that a broader range of solutions may be obtained with a neuralnetwork or other nonanalytic approach that respects the inherent geometry of endeffector positions.
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