I came to know the term 'fuzzy logic' while I was still a student at Swinburne University in Australia back in 2003. During one of my assignments for my Bachelor of Multimedia (Animation), I presented a topic on MASSIVE software and the fuzzy logic that was used to develop the software.
MASSIVE (Multiple Agent Simulation System in Virtual Environment) is a high-end computer animation and artificial intelligence software created by Stephen Regelous for the Lord of the Rings films (2001-2003) by Weta Digital. Traditionally, 3D animators need to animate individually the model's movements in a 3D environment to create the desired motions to be captured. MASSIVE on the other hand has the ability create up to thousands of 'agents' that has been pre-defined its behaviors to interact almost independently with each other in a 3D environment. This technology allows Weta Digital to generate many of the massive battle sequences in the LOTR movies. Since then, MASSIVE has created many award-winning visual effects for films such as Avatar, 300, Rise of the Planet of the Apes, etc.
The term fuzzy logic on the other hand has been around since the 1960s. Traditional computing logic that we all are familiar with is the Boolean logic, or values of True (1) or False (0). Fuzzy logic can be either between zero (0) to one (1) where it can be 'partial True at 0.7' or 'mostly False at 0.3'. This allow the systems that uses fuzzy logic to have a more flexible application in terms of machine decision-making. Below is a link to a video that explains on the fuzzy logic theory.
This triggered me to try to find out further on fuzzy logic applications in other areas or industries.
- Hitachi applied fuzzy logic for the Sendai Subway system in Japan. It uses a fuzzy controller to run the train on the Nanboku line to control the speed of the train. It is 10% more energy efficient than human-controlled acceleration.
- Heating ventilation and air-conditioning (HVAC) system uses fuzzy logic to control the heating and cooling, and it keeps the temperature more steady that a traditional thermostat as well as energy saving.
- Car control systems and aerospace vehicle control systems
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