This paper evaluates various information-theoretical methods for the generation of health signals in the Organic Robot Control Architecture (ORCA). Also a new method based on the joint probability distribution of signals is proposed. The results show that the new method is superior to the known ones for the studied worst-case artificial and real scenarios. As an example for the application of h...

A basic problem in the decentralized control of a multiple access channel is to resolve the conflicts that arise when several stations transmit simultaneously to the channel. Capetanakfs, Hayes, and Tsybakov and Mikhailov found a deterministic tree algorithm that resolves conflicts among k stations from an ensemble of n in time O(k + k log( n/k)) in the worst case. In this algorithm, at each st...

This paper presents a simple framework of low cost Kit which can be used in control education and training courses to support hardware in the loop simulation. The kit shows the student or control engineer the effect of delays, noise, and saturation on the control system. The framework is generic and flexible to give the user the ability to test and simulate any controller on any process. The fr...

The probabilistic approach to analysis and design of robust control systems is an emerging philosophy that gained increasing interest in recent years, see e.g. the book [24]. Opposed to the so-far dominating paradigm of deterministic worst-case robustness, the probabilistic approach presents itself as a natural tool to deal with the random character of uncertainties affecting control systems. I...

For complex dynamic systems, a modular control design process is often employed, wherein the overall design is partitioned into smaller modules. The designers of each module only possess a model for a particular subset of the entire plant as well as closed loop performance specifications for the other module(s). In this paper, we will examine a common modular control strategy in which an outer ...

In order to guarantee deadlines of real-time messages, it is necessary to construct connections or realtime channels before the actual transmission of the messages. An increasing number of distributed realtime systems that are related to multimedia and command and control systems require flexible network resource management. Those schemes proposed before couldn’t accept channel construction req...

Various methods for controlling manufacturing systems have been proposed, but until now the problem could not be considered as being solved. This may be due to the lack of a sound mathematical foundation. Therefore, an algebraic modelling method to describe manufacturing systems is developed. The result of this system modelling is a state equation which can be used for the design of closed loop...

A composite system consists of several components which can be developed separately and deployed in distributed environments. Executing test cases on such kind of systems requires more effort due to their size and their distributed environments. A critical issue is to prioritize efficient test cases to be firstly executed. We present in this paper a framework to generate test cases and to selec...

Needs for increased product quality, reduced pollution, and reduced energy and material consumption are driving enhanced process integration. This increases the number of manipulated and measured variables required by the control system to achieve its objectives. This paper addresses the question of whether processes tend to become increasingly more difficult to identify and control as the proc...

A CBR system needs a good case retention strategy to decide which cases to incorporate into the case base in order to maximize the performance of the system. In this work we present a collaborative case retention strategy, designed for multiagent CBR systems, called the Collaborative Case Bargaining strategy. The CCB strategy is a bargaining mechanism in which each CBR agent tries to maximize t...