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FOR IMMEDIATE RELEASE No. 3254

Mitsubishi Electric's Fast Stepwise-learning AI Shortens Motion Learning

Ideal for efficient startup of production equipment

TOKYO, February 13, 2019 - Mitsubishi Electric Corporation (TOKYO: 6503) announced today that it has developed an artificial intelligence (AI) technology capable of fast stepwise learning using a simulator to efficiently complete motion learning in a relatively short time. The new technology combines the company's latest proprietary Maisart®1 compact AI technology and reinforcement learning, which enables machines to explore optimal actions through highly efficient trial and error. Supported with the company's smart-control AI technology that adapts rapidly and nimbly to changing conditions2, the new AI technology learns and responds to changes in actual environments in real time to enable smooth machine operation. Going forward, Mitsubishi Electric will continue developing the technology for improved equipment startup efficiency and autonomous operation.

1 Mitsubishi Electric's AI creates the State-of-the- ART in technologyMaisart
2 Mitsubishi Eletric Develops Smart-control AI Technology that Adapts Rapidly and Nimbly to Changing Conditions http://www.mitsubishielectric.com/news/2018/0208.html (February, 8, 2018)
Examples of application in industrial robots


Examples of application in industrial robots (behavior learning to achieve goal in shortest time)

Due to declining workforces in ageing societies such as Japan, securing sufficient human resources is becoming increasingly difficult, which in turn is raising the demand for AI that can support efficient mechanized operations. New production facilities, however, present special challenges due to differences in pre-learned and actual shop environments, resulting in huge amounts of time having to be devoted to teaching AI before it can be implemented on a full scale. Mitsubishi Electric's new AI automatically creates control programs for actual environments after short learning to support optimized operations.

Main Features

The new AI technology achieves quick stepwise learning with the help of Maisart's reinforcement-learning capability, a significant improvement over conventional methods that require enormous learning time to test various content and their combinations. Mitsubishi Electric drew on its expertise in factory automation equipment, machine tools and autonomous-operation technology to refine its AI's reinforcement-learning capability, focusing on simplifying work-process learning step by step. Instead of attempting to learn everything at once, the company simplified learning contents and added simple, automatic stepwise learning for faster and more efficient learning. In-house testing found the time required for program creation3 is a mere one tenth4 that of manual processes.

3 Including repeat operation correction and operation confirmation
4 Adjustment work required using an industrial robot


To shorten the takt time (average time to produce one unit and begin work on the next unit) using production equipment such as industrial robots, skilled workers conventionally must make many adjustments to the production equipment. With Mitsubishi Electric's new AI, however, adjustments of route, speed, acceleration, etc. are performed automatically. Action is learned beforehand using a simulator, allowing the AI to make adjustments automatically to shorten the takt without using an image sensor. The result is productivity equal to or higher than that of equipment adjusted by a skilled worker.

  Function Time required for adjustments
Developed technology Programming with AI 1/10th of conventional method
Conventional method Manual program creation 1

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