This paper focuses on the programming and configuration stages of the domotics systems (automation technology applied to the technical management of houses and buildings), which are carried out in the laboratory prior...
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This paper focuses on the programming and configuration stages of the domotics systems (automation technology applied to the technical management of houses and buildings), which are carried out in the laboratory prior to its definitive installation in houses and buildings. Different hardware and software tools for testing and debugging domotics systems are described. Because of their limitations (cost, closeness to the real system, flexibility, maintenance, etc.) we have developed a new software simulation tool called VISIR, which is comprised of three components: Editor, Drawing and Simulation. This paper describes VISIR features and operation modes using an example. All of this allows important advantages to be found in using this software for domotics laboratory training.
We have developed a non-volatile high-precision analog EEPROM comprising two transistors per cell. In this newly developed memory, real-time write monitoring (RTM) is employed during cell programming to achieve automa...
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ISBN:
(纸本)0780366859
We have developed a non-volatile high-precision analog EEPROM comprising two transistors per cell. In this newly developed memory, real-time write monitoring (RTM) is employed during cell programming to achieve automatic write termination without conventional write-verify cycles. Highly accurate data writing has been realized using a new self-calibrated offset cancellation scheme involving the double auto-zeroing of a chopper comparator. Fundamental circuit operation is verified experimentally on fabricated test circuits. Without the need for time-consuming write-verify cycles, the new analog EEPROM is suitable for use in analog signal processing applications with real-time information processing requirements.
Summary form only given. The space-time autocoding effect implies that arbitrarily reliable communication is possible within a single coherence interval in Rayleigh flat fading as the symbol-duration of the coherence ...
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ISBN:
(纸本)0780371232
Summary form only given. The space-time autocoding effect implies that arbitrarily reliable communication is possible within a single coherence interval in Rayleigh flat fading as the symbol-duration of the coherence interval and the number of transmit antennas grow simultaneously. For relatively short (e.g., 16-symbol) coherence intervals, a codebook of isotropically random unitary space-time signals theoretically supports transmission rates that are a significant fraction of autocapacity with an extremely low probability of error. However a constellation of the required size (typically L=2/sup 80/) is impossible to generate and store, and due to lack of structure there is little hope of finding a fast decoding scheme. We propose a random, but highly structured, constellation that is completely specified by log/sub 2/ L independent isotropically distributed unitary matrices. The distinguishing property of this construction is that any two signals in the constellation are pairwise statistically independent and isotropically distributed. Thus, the pairwise probability of error, and hence the union bound on the block probability of error, of the structured constellation is identical to that of a fully random constellation of independent signals.
Society increasingly depends on programmable electronic systems in life critical automation systems. Programs employed for purposes of safety related control must be safety licensed, which is a very difficult and hith...
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Society increasingly depends on programmable electronic systems in life critical automation systems. Programs employed for purposes of safety related control must be safety licensed, which is a very difficult and hitherto not satisfactorily solved problem. To obtain trustworthy software, it is advocated to employ the principle of divide and conquer, and to orient the design of control systems at the comprehension capabilities of humans by using function block diagrams on the basis of verified libraries as the only programming method so far, allowing us to verify automation software easily and economically. Function block libraries specific to application areas can be rigorously verified with formal methods, and single application programs can be safety licensed by diverse back translation, an extremely simple, but rigorous method directly leading back in one step from object code to the graphical specification level. Augmented with timing features, function block diagrams are amenable to a priori schedulability analysis with standard methods.
This paper focuses on learning in autonomous agents under dynamic environments. Autonomous agent control has been dominated by two major Artificial Intelligence (AI) approaches, Planning-based and Behavior-based. We c...
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This paper focuses on learning in autonomous agents under dynamic environments. Autonomous agent control has been dominated by two major Artificial Intelligence (AI) approaches, Planning-based and Behavior-based. We concentrate on Behavior-based control. Multiple behavior modules from which a Behavior-based agent is constituted may have conflicting outputs (actions) for various input situations. It is becoming increasingly difficult to 'hard-wire' or 'pre-fix' the actions. "Learning" to select an appropriate action emerges as a strong alternative to hard-wired schemes. A Behavior-based agent is constructed for the research study. The application task chosen for the agent is to learn to navigate in a real indoor environment avoiding static and moving obstacles. The strategy is as follows: learning to avoid obstacles is to be achieved by learning to select an appropriate action in any input situation. The learning algorithm, based on reinforcement learning principles, chooses with high probability, an appropriate action based on the performance statistics (activations and reinforcements) of the conflicting behaviors. Learning experiments conducted to observe the performance of the agent were encouraging.
This paper describes our current research on learning task level representations by a robot through observation of human demonstrations. We focus on human hand actions and represent such hand actions in symbolic task ...
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ISBN:
(纸本)0780365763
This paper describes our current research on learning task level representations by a robot through observation of human demonstrations. We focus on human hand actions and represent such hand actions in symbolic task models. We propose a framework of such models by efficiently integrating multiple observations based on attention points; we then evaluate the model by using a human-form robot. We propose a two-step observation mechanism. At the first step, the system roughly observes the entire sequence of the human demonstration, builds a rough task model and extracts attention points (APs). The attention points indicate the time and position in the observation sequence that requires further detailed analysis. At the second step, the system closely examines the sequence around the APs and the obtained attribute values for the task model, such as what to grasp, which hand to be used, or what is the precise trajectory of the manipulated object. We implemented this system on a human form robot and demonstrated its effectiveness.
The assembly systems unit at the Royal Institute of Technology-IVF has developed several flexible automatic assembly (FAA) cell solutions over the years. Current industrial trends, however, clearly point out that the ...
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ISBN:
(纸本)078037004X
The assembly systems unit at the Royal Institute of Technology-IVF has developed several flexible automatic assembly (FAA) cell solutions over the years. Current industrial trends, however, clearly point out that the basic notions of flexibility must be extended and be enhanced without increasing the complexity. The key lies in the creation of modular assembly systems with interfaces based on open standards. It must be possible to adopt equipment from different suppliers to the system. To reach these objectives, the research group has established a development project of both suppliers, users and universities on a European level, called SHARC (standardised hybrid assembly with reactive capacity). This project runs parallel to, and in conjunction with, the national hyper FAA project. These projects will attempt to create a system concept which can be easily adapted to a very large range of products, variants, and their associated volume fluctuations. The paper also describes and discusses our engineering platform, the Mark IV application.
This paper presents a mutation analysis tool based on a reflective macro system. Mutation analysis is a powerful and computationally expensive technique that measures the effectiveness of test cases for revealing faul...
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ISBN:
(纸本)0769514081
This paper presents a mutation analysis tool based on a reflective macro system. Mutation analysis is a powerful and computationally expensive technique that measures the effectiveness of test cases for revealing faults. The principal expense of mutation analysis is that many faulty versions of the program under test, called mutants, must be repeatedly executed. This technique has originally been developed in the framework of procedural programs, and should be revisited to consider some types of faults likely to appear in object-oriented environments. The mutation system detailed in this paper deals with object-oriented concepts introduced in the Java programming language, and is able to generate automatically mutant programs according to 20 types of object-oriented faults.
This paper presents a fuzzy controller to reject sinusoidal disturbances in a dynamical system. First, the fuzzy rules used in the fuzzy control are automatically tuned by evolutionary programming. These fuzzy rules a...
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This paper presents a fuzzy controller to reject sinusoidal disturbances in a dynamical system. First, the fuzzy rules used in the fuzzy control are automatically tuned by evolutionary programming. These fuzzy rules are then used to reject the disturbances in a dynamical system. The robust control technique is applied to compensate for the uncertainties arising from the unknown optimal weight matrix and reconstruction error by using a fuzzy logic system. Simulation results are presented to illustrate the performance of the proposed control.
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