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Online stably controlled humanoid robot based on bionic reinforcement learning type cerebellum model

A humanoid robot and cerebellum model technology, applied in the field of online stable control of humanoid robots, can solve problems such as ignoring the structural characteristics of the cerebellum, and achieve the effect of improving stability and balance

Active Publication Date: 2020-12-11
DALIAN UNIV OF TECH
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Problems solved by technology

These cerebellar models are usually only for the purpose of controlling the effect, and although the functional model of the cerebellum is borrowed, the structural properties of the cerebellum are ignored

Method used

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  • Online stably controlled humanoid robot based on bionic reinforcement learning type cerebellum model
  • Online stably controlled humanoid robot based on bionic reinforcement learning type cerebellum model
  • Online stably controlled humanoid robot based on bionic reinforcement learning type cerebellum model

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Embodiment Construction

[0006] This embodiment discloses an online walking stability control method for a humanoid robot based on the Actor Critic reinforcement learning algorithm. The present invention is based on the research idea of ​​the walking control strategy of offline gait planning combined with online stability adjustment, and designs the framework structure of the walking control strategy Such as figure 1 As shown, the method mainly includes two steps: 1. Generate offline gait based on ZMP theory and cubic spline interpolation method, that is, the offline gait planning of the humanoid robot, so that the humanoid robot can track the joint motion trajectory generated offline, Possess basic walking ability. 2. Design an online stability controller based on the AC reinforcement learning algorithm. The controller can collect the state information of the robot in real time during the walking process of the robot, and adjust the walking posture of the robot so that it can walk stably on uneven ro...

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Abstract

The invention relates to an online stably controlled humanoid robot based on a bionic reinforcement learning type cerebellum model and belongs to the field of humanoid robots. In order to solve the problem of improving the stabilizing and balancing abilities of the humanoid robot in a walking process, the humanoid robot comprises an apparatus for planning an offline gait of the humanoid robot anda cerebellum model controller, wherein the apparatus output makes the humanoid robot tracks a joint movement locus generated offline to have the walking ability; and the cerebellum model controller, responding to the offline gait, comprises a state encoding module, a cerebellum model, an inferior olive feeding module and a motion mapping module, wherein the state encoding module adjusts an activated state of PF according to state information collected by a sensor of the humanoid robot, the inferior olive feeding module modifies a behavior selection probability and a cerebellum nerve cell storage weight based on evaluation information fed back by an environment, and the motion mapping module adjusts actions of the robot according to output of a functional module. The online stably controlled humanoid robot has an effect of improving the stabilizing and balancing abilities of the humanoid robot in the walking process.

Description

technical field [0001] The invention belongs to the field of humanoid robots, and relates to an online stable control humanoid robot based on a bionic reinforcement learning type cerebellum model. Background technique [0002] A humanoid robot is a robot designed to imitate human appearance and behavior. It constantly replicates the characteristics of human comprehensive capabilities so that it can replace humans to complete repetitive, high-risk, and labor-intensive tasks, so it has broad application prospects. Humanoid robot is a typical multi-joint nonlinear underactuated system, so its gait control is a very challenging problem, and it is also the key to the wide application of humanoid robots. Researchers have proposed a variety of motion gait control methods. At present, the most common method is to decompose the motion task into different sub-modules for planning and control to form an offline gait mode, such as zero point moment (ZMP) theory, inverted pendulum model,...

Claims

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Application Information

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IPC IPC(8): B25J9/16G06N3/00G06N3/04G06N3/08
CPCB25J9/161B25J9/1664G06N3/008G06N3/084G06N3/045
Inventor 刘蓉颜子开孙长凯王永轩
Owner DALIAN UNIV OF TECH
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