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Optimization Techniques For an Artificial Potential Fields Racing Car Controller
Blekinge Tekniska Högskola, Fakulteten för datavetenskaper, Institutionen för datalogi och datorsystemteknik.
2013 (engelsk)Independent thesis Advanced level (degree of Master (Two Years))Oppgave
Abstract [en]

Context. Building autonomous racing car controllers is a growing field of computer science which has been receiving great attention lately. An approach named Artificial Potential Fields (APF) is used widely as a path finding and obstacle avoidance approach in robotics and vehicle motion controlling systems. The use of APF results in a collision free path, it can also be used to achieve other goals such as overtaking and maneuverability. Objectives. The aim of this thesis is to build an autonomous racing car controller that can achieve good performance in terms of speed, time, and damage level. To fulfill our aim we need to achieve optimality in the controller choices because racing requires the highest possible performance. Also, we need to build the controller using algorithms that does not result in high computational overhead. Methods. We used Particle Swarm Optimization (PSO) in combination with APF to achieve optimal car controlling. The Open Racing Car Simulator (TORCS) was used as a testbed for the proposed controller, we have conducted two experiments with different configuration each time to test the performance of our APF- PSO controller. Results. The obtained results showed that using the APF-PSO controller resulted in good performance compared to top performing controllers. Also, the results showed that the use of PSO proved to enhance the performance compared to using APF only. High performance has been proven in the solo driving and in racing competitions, with the exception of an increased level of damage, however, the level of damage was not very high and did not result in a controller shut down. Conclusions. Based on the obtained results we have concluded that the use of PSO with APF results in high performance while taking low computational cost.

sted, utgiver, år, opplag, sider
2013. , s. 39
Emneord [en]
Autonomous car controller, Artificial Potential Fields (APF), Particle Swarm Optimization (PSO), TORCS.
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Identifikatorer
URN: urn:nbn:se:bth-6211Lokal ID: oai:bth.se:arkivex07418F3F809C74A1C1257DED0081D492OAI: oai:DiVA.org:bth-6211DiVA, id: diva2:833642
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Tilgjengelig fra: 2015-04-22 Laget: 2015-02-16 Sist oppdatert: 2018-01-11bibliografisk kontrollert

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