A temperature-first grasping method for dense objects with robotic arms based on deep reinforcement learning

A technology of intensive learning and dense objects, applied in the direction of manipulators, program-controlled manipulators, manufacturing tools, etc., can solve the problems of difficulty, general grasping effect of densely stacked objects, difficulty in applying unstructured scenes, etc., and achieve the goal of improving grasping performance Effect

Active Publication Date: 2022-05-06
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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AI Technical Summary

Problems solved by technology

[0004] The characteristics of the above grasping scenarios have brought difficulties to the grasping work of the robotic arm; the actual modeling process of the model-based method is usually complicated, and it is difficult to apply to unstructured scenarios; Grasping has some effect, but it is not effective for densely stacked objects, and it cannot give priority to hazard conditions

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  • A temperature-first grasping method for dense objects with robotic arms based on deep reinforcement learning
  • A temperature-first grasping method for dense objects with robotic arms based on deep reinforcement learning
  • A temperature-first grasping method for dense objects with robotic arms based on deep reinforcement learning

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Embodiment 1

[0141] The present invention uses a deep reinforcement learning algorithm to enable the robotic arm to learn the optimal grasping strategy faster under training, and has the ability to preferentially grasp objects with higher temperature; the present invention uses the UR5 robotic arm and the RG2 robotic arm as examples. In detail, the RG2 manipulator is the end effector of the manipulator, which moves in the horizontal and vertical directions; the image information is captured by the RGB-D camera and the infrared thermal imager, and the image is rendered by OpenGl;

[0142] The task scenario designed in this embodiment is to use the robotic arm to grab 10 objects of random temperature, color, and shape. These objects are stacked irregularly and densely until the robotic arm grabs all the objects.

[0143] Such as figure 2 As shown, the temperature-first grasping method for dense objects with a robotic arm based on deep reinforcement learning described in this embodiment incl...

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Abstract

The invention discloses a temperature-priority grabbing method for dense objects with a robotic arm based on deep reinforcement learning, comprising the following steps: step S1, constructing a working space of the robotic arm, and constructing a real-time state; step S2, preprocessing the state information; step S3 1. Pass the preprocessed information forward through the Q network to obtain the corresponding Q value; step S4, guide the action of the manipulator according to the Q value and the ε‑greedy strategy, and obtain rewards through the reward function; step S5, continuously pass the target Q The network updates the weights to realize the training of the Q network; step S6, records the relevant data in the training process and the final trained model, and obtains the optimal grasping strategy of the manipulator. The invention is aimed at grasping scenes with irregular shapes, dense stacking, and temperature factors that need to be prioritized; the action of the mechanical arm is designed according to the deep reinforcement learning algorithm, the grasping performance of the mechanical arm is improved, and infrared images are introduced to make the mechanical arm have a priority to grasp The ability to extract higher temperature objects is characterized.

Description

technical field [0001] The present invention relates to a temperature-priority grabbing method for dense objects with a manipulator based on deep reinforcement learning. Deep reinforcement learning is applied to the grasping task of a manipulator, and pushing and grasping are put into a joint action within a reinforcement learning framework to promote Promote grasping and set temperature rewards, so that the robotic arm can better grasp dense objects and have the ability to preferentially grasp high-temperature objects. Background technique [0002] At present, the application and function of robotic arms are becoming more and more perfect; with the rapid development of robotic arm technology, robotic arms have been widely used in industrial tasks such as handling, palletizing, cutting, welding, etc., which not only liberate manpower, but also improve industrial production. The efficiency and quality of the robot arm; among them, the grasping task of the robotic arm is the b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25J9/16
CPCB25J9/163
Inventor 陈满李茂军李宜伟赖志强李俊日熊凯飞
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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