"A Robot That Walks# EmergentBehavior From a Carefully Evolved Network," Rodney A. Brooks, Neural Computation,Vol. 1.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....for mobile robots which can be compiled efficiently into parallel networks on silicon. Brooks subsumption style architectures [Brooks 86] provide a way of combining distributed real time control with sensor triggered behaviors to produce a variety of robots exhibiting insect level intelligence [Brooks 89] Angle 89] Connell 90] Mataric 90] Flynn, Brooks, Wells and Barrett 89] Maes and Brooks 90] This assemblage of artificial creatures includes soda can collecting robots, sonar guided explorers, six legged arthropods that learn to walk, and a bug that hides in the dark and moves ....

.... architectures [Brooks 86] provide a way of combining distributed real time control with sensor triggered behaviors to produce a variety of robots exhibiting insect level intelligence [Brooks 89] Angle 89] Connell 90] Mataric 90] Flynn, Brooks, Wells and Barrett 89] Maes and Brooks 90]. This assemblage of artificial creatures includes soda can collecting robots, sonar guided explorers, six legged arthropods that learn to walk, and a bug that hides in the dark and moves towards noises. One of the most interesting aspects of the subsumption architecture has to do with the way ....

"A Robot That Walks# EmergentBehavior From a Carefully Evolved Network," Rodney A. Brooks, Neural Computation,Vol. 1.

....has attempted to build completely autonomous mobile robots. We have refined hardware and software tools so that we can build a new one quickly. For instance, Genghis, a six legged walking robot, was completed in 12 weeks for a Jet Propulsion Lab workshop on microspacecraft [Jones 88] The robot [Brooks 89] Angle 89a] was principally built and debugged by two people, with occasional help from about half a dozen others. The robot, shown in figure 1, weighs less than a kilogram and can scramble over rough terrain. A follow on vehicle [Angle 89b] will be able to climb meter high rocks and travel ....

"A Robot that Walks: Emergent Behavior from a Carefully Evolved Network", Rodney A. Brooks, Neural Computation 1:2, summer.

....module has control of which part or the robot at any given time. The programs are layered in their construction, but are non hierarchical in their control flow, with lower levels taking care of more primitive activities and higher levels taking care of more sophisticated ones (see [Brooks 86] and [Brooks 90b] for an introduction and review, and [Brooks 91c] for a survey of the field) This work draws its inspirations from neurobiology ethology, psychophysics, and sociology. The approach grew out of dissatisfactions with traditional robotics and Artificial Intelligence, which seemed unable to deliver ....

....is an autonomous mobile robot, and that carries out some useful tasks in an environment which has not been specially structured or engineered for it. While robots built on these principles have been demonstrated learning calibration information [Viola 90] behavior coordination [Maes and Brooks 90], and representations of the world [Mataric 90] progress in learning new behaviors has proven more difficult. Today, we are constrained to programming each new behavior by hand. Work in Artificial Life has developed techniques for evolving programs for controlling situated, but unembodied (i.e. ....

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"Robot that Walks: Emergent Behavior from a Carefully Evolved Network", Rodney A. Brooks, Neural Computation, 1:2, Summer, 253-262.

....much of the emphasis is on building forms resident in computers, which are agents acting in an information domain, there has also been some interest in physical embodiments of artificial creatures. This author, at the MIT Al Lab, introduced the subsumption architecture ( Brooks 86] and extended in [Brooks 90]) with the explicit goal of building mobile robots with long term autonomy. Later the word creature crept into the language of the MIT group (e.g. Connell 87] The goal is to build autonomous mobile robots which operate over long periods of time, completely autonomously, in dynamic worlds. It ....

....in this world. As [Flynn 87] points out, there are many components to such creatures, including sensors, actuators, power sources, and intelligence. Over the last five years we have found that all these components are intimately related as we have tried to build prototype creatures ( Flynn and Brooks 89] Choices in any part of the system architecture (e.g. sensor characteristics) have major impacts upon other parts of the system. In general it is very dangerous to think that any one component (such as intelligence) can be isolated and studied by itself. Our experience with the subtleties of ....

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"A Robot that Walks: Emergent Behavior from a Carefully Evolved Network", Rodney A. Brooks, Neural Computation, 1:2, Summer, 253-262.

....processors are connected on a LAN known as the I 2 C bus, which runs at a peak of 100kilobits per second. We e#ectively run it at about 16kilobits per second. The Environment and Task In an earlier six legged robot, Genghis, we used subsumption to get it to carry out rough terrain predation [Brooks 89] and hte Behavior Language to learn to coordinate its leg motions so as not to fall down [Maes and Brooks 90] For Attila we are interested in a much more comprehensive set of behaviors. Furthermore we use an organization for walking inspired by observations of stick insects [Cruse 90] The ....

"A Robot that Walks; Emergent Behavior from a Carefully Evolved Network", Rodney A. Brooks, Neural Computation, 1:2, Summer 1989.

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"A Robot that Walks: Emergent Behavior from a Carefully Evolved Network", Rodney A. Brooks, Neural Computation 1:2, 1989, 253--262.

....wires around to get caught on something. We are simultaneously building two Attila prototype robots. One of them is shown in figures 8 and 9. 6 Programming the Robot Attila is controlled by a seething mass of independent agents. This approach was successfully used in our first six legged robot [Brooks 89] In that system we had a very distributed walking algorithm which let legs almost independently comply with rough underlying terrain, while still contributing to the maintenance of higher level goals [I4] Attila has 9 servo processors which run the motors and sensor system. One main processor ....

....algorithm which let legs almost independently comply with rough underlying terrain, while still contributing to the maintenance of higher level goals [I4] Attila has 9 servo processors which run the motors and sensor system. One main processor (a Signetics 68070) runs the subsumption architecture [Brooks 86, 90]. It simulates over 1000 independent asynchronous parallel processes, using a message passing protocol for communication [I1] A second 68070 is dedicated to vision [I3] In order to achieve the goals of the mission without having two way communication, or extensive ground support, it is important ....

"A Robot that Walks: Emergent Behavior from a Carefully Evolved Network", Rodney A. Brooks, Neural Computation 1:2, Summer, 253-262.

....N00014 86 K 0685, in part by the Advanced Research Projects Agency under Office of Naval Research contract N00014 85 K 0124 and in part by a gift from Siemens. 1 INTRODUCTION 2 1 Introduction The subsumption architecture was described initially in [Brooks 86] and later modified in [Brooks 89] and [Connell 89] The subsumption compiler compiles augmented finite state machine (AFSM) descriptions into a special purpose scheduler to simulate parallelism and a set of finite state machine simulation routines. This is a dynamically retargettable compiler that has backends already for a ....

"A Robot that Walks: Emergent Behavior from a Carefully Evolved Network", Rodney A. Brooks, Neural Computation 1:2, Summer.

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