In this paper, a Petri Net approach is introduced for modelling and simulation of control strategies in Intelligent Building. In this context, it is claimed that integration with other building systems can be achieved in a more systematic way considering a mechatronic approach (i.e. multidisciplinary concepts applied to the development of systems). The case study is the Ambulatory Building of Medical School Hospital of University of São Paulo. Particularly, the developed methodology is applied to the elevator system and to the HVAC (Heating, Ventilation and Air Conditioning) system. It is shown that using this approach, the control systems could be integrated, improving performance
This paper addresses the vibration control of pneumatic isolation table using solenoid valves. Solenoid valves are effective in damping of large vibrations by its high speed response and can make a control system with low cost. However, control inputs are restricted to finite discrete values because solenoid valve is an on-off type actuator. Therefore, it is required to consider discrete-valued input system. Some control methods have been proposed for discrete-valued input system, but there are some cases where good control inputs cannot be obtained. In order to improve the control performance, a model predictive control method which is able to be applied to the plant with discrete-valued input and fast sampling period, is proposed. This method can obtain good discrete-valued control input with a small amount of calculation cost. Effectiveness of the proposed method is verified by numerical simulations and experiments.
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