Process failures diagnosis in FMS real-time control: an approach combining rule-based systems and Petri nets

The potential of Real Time Control (RTC) to reduce the overflow volume from a combined sewer system has been investigated for a catchment in Copenhagen, named Strandvaenget. The results have been compared with the alternative of increasing the storage volume of the system. The RTC strategy has been derived using a mathematical optimization and a rule based method. As the only objective is to reduce the Combined Sewer Overflow (CSO), the developed rule based control algorithm can achieve almost the same results as the optimization method. From the results of time series calculations, it can be concluded that the introduction of RTC appears very promising when the mean yearly CSO volume has to be reduced. In this research, the potential of RTC is investigated for an increasing amount of storage volume and for an increasing demand for reduction of CSO volume.

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Model based real-time control of sewer system using fuzzy-logic

Water Science & Technology ◽

10.2166/wst.1997.0690 ◽

1997 ◽

Vol 36 (8-9) ◽

pp. 343-347 ◽

Cited By ~ 3

Author(s):

L. Fuchs ◽

T. Beeneken ◽

P. Spönemann ◽

C. Scheffer

Keyword(s):

Fuzzy Logic ◽

Real Time ◽

Control Device ◽

Real Time Control ◽

Sewer System ◽

Rule Based ◽

The Real ◽

Time Control ◽

Set Up ◽

Final System

This paper describes the use of the sewer model HYSTEM-EXTRAN in combination with a rule based control device using fuzzy-logic to simulate the real-time control of a sewer system. The rules for the control of the system were set up with the help of optimization procedures. The advantage of the procedure is proved by comparing the uncontrolled versus the controlled state in a simulated mode for an existing sewer system. The final system was installed and tested within the sewer system.

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An integrated optimization and rule-based approach for predictive real time control of urban stormwater management systems

Journal of Hydrology ◽

10.1016/j.jhydrol.2019.124000 ◽

2019 ◽

Vol 577 ◽

pp. 124000 ◽

Cited By ~ 7

Author(s):

Shadab Shishegar ◽

Sophie Duchesne ◽

Geneviève Pelletier

Keyword(s):

Real Time ◽

Stormwater Management ◽

Management Systems ◽

Real Time Control ◽

Urban Stormwater ◽

Rule Based ◽

Urban Stormwater Management ◽

Integrated Optimization ◽

Time Control ◽

Rule Based Approach

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Modeling and Simulation of Discrete Event Robotic Systems Using Extended Petri Nets

Prototyping of Robotic Systems - Advances in Computational Intelligence and Robotics ◽

10.4018/978-1-4666-0176-5.ch002 ◽

2012 ◽

pp. 51-69

Author(s):

Gen’ichi Yasuda

Keyword(s):

Petri Nets ◽

Real Time ◽

Discrete Event ◽

Control Flow ◽

Coordination Mechanism ◽

Robotic Systems ◽

Real Time Control ◽

Time Control ◽

Extended Petri Nets ◽

Implementation Problems

This chapter deals with modeling, simulation, and implementation problems encountered in robotic manufacturing control systems. Extended Petri nets are adopted as a prototyping tool for expressing real-time control of robotic systems and a systematic method based on hierarchical Petri nets is described for their direct implementation. A coordination mechanism is introduced to coordinate the event activities of the distributed machine controllers through friability tests of shared global transitions. The proposed prototyping method allows a direct coding of the inter-task cooperation by robots and intelligent machines from the conceptual Petri net specification, so that it increases the traceability and the understanding of the control flow of a parallel application specified by a net model. This approach can be integrated with off-the-shelf real-time executives. Control software using multithreaded programming is demonstrated to show the effectiveness of the proposed method.

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