Reinforcement learning awarding method suitable for movable mechanical arm

A mobile robot arm and reinforcement learning technology, applied in the direction of manipulators, program-controlled manipulators, manufacturing tools, etc., can solve a large number of human experience, the manipulator can not adapt to changes in the external environment in time, complex kinematics and other problems

Active Publication Date: 2020-08-11
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the complexity of the actual application environment continues to increase, the traditional model-based and rule-based control methods will become more and more complex in modeling the environment and solving the kinematics of the manip

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  • Reinforcement learning awarding method suitable for movable mechanical arm
  • Reinforcement learning awarding method suitable for movable mechanical arm
  • Reinforcement learning awarding method suitable for movable mechanical arm

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Embodiment Construction

[0079] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0080] as attached figure 1 Shown: This embodiment provides a reinforcement learning reward method suitable for mobile manipulators. The present invention utilizes an additionally designed reflective reward function so that the mobile manipulator can learn the target strategy faster and complete the task under the training of the reinforcement learning algorithm. corresponding control tasks. The present invention is described in detail by taking a mobile mechanical arm system with 6 degrees of freedom as an example. The end of the mechanical arm is a two-finger gripper that can grip a dropper, and the gripper can move horizontally and vertically; and Attached to the robotic arm is a four-wheeled mobile robot that moves only horizontally in the mission setting. The task scenario designed in this embodiment is to use the mobile robot arm to com...

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Abstract

The invention discloses a reinforcement learning awarding method suitable for a movable mechanical arm. The method comprises the following steps that S1, a task scene, an initialization algorithm, various parameters of the movable mechanical arm and a deep network model corresponding to the algorithm are designed; S2, environment information sent by information collection equipment on the movablemechanical arm is reconstructed and rasterized, and a starting position and a target position of the movable mechanical arm are clear and definite; S3, interaction with the environment, training dataare collected and stored in an experience pond; S4, one batch of data is sampled from the experience pond, and through treatment of a reward function, rethinking rewards which are additionally designed are obtained for subsequent training; S5, original rewards and extra rewards are combined, and a deep reinforcement learning algorithm trains the movable mechanical arm to finish a target task in aplanned space; and S6, related training data and final model parameters obtained through training are recorded, and a corresponding optimal strategy is obtained.

Description

technical field [0001] The invention relates to a reinforcement learning reward method suitable for mobile manipulators. Reinforcement learning is used in traditional manipulator control tasks, and the structure of the reward signal is redesigned to solve the defects of the reward setting in the existing method, and achieve better results. Good control performance. Background technique [0002] In the traditional control field, the control and motion planning of the mobile manipulator usually involves kinematic modeling of the manipulator and solving the end pose and the angle value of each joint. As the complexity of the actual application environment continues to increase, the traditional model-based and rule-based control methods will become more and more complex in modeling the environment and solving the kinematics of the manipulator, and require a lot of human experience to design the corresponding rules. [0003] Both design rules and modeling require a lot of energy...

Claims

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Application Information

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IPC IPC(8): B25J9/16
CPCB25J9/16B25J9/163B25J9/1628
Inventor 辛博朱冰清程旭陈春林马晶
Owner NANJING UNIV
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