On the performance of the PIDPLUS controller in wireless control systems
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Cites methods from "On the performance of the PIDPLUS c..."
...Additionally, when the networ k is wireless, the control system designer should take into acco unt bandwidth usage and energy consumption in the control loop design, Willig [2008]. Hence, new controller structures an d PI tunings methods are required. To cope with these problems, event-based techniques for control were recently introduced,̊ Aström and Bernhardsson [1999], Tabuada [2007]. Such techniques allow an efficient u tilization of the network resources, while ensuring a desired b havior of the closed-loop system....
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...Although PIDPLUS was introduced to deal wit h packet losses and time delays, and its stability properties and performances are tested mainly by simulation or with experi mental test-beds, Ungan [2010], Kaltiokallio et al. [2010] , here we adopt such a controller in an event-based fashion, furthe r providing stability conditions in a rigorous way....
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...Additionally, when the networ k is wireless, the control system designer should take into acco unt bandwidth usage and energy consumption in the control loop design, Willig [2008]. Hence, new controller structures an d PI tunings methods are required....
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...Additionally, when the networ k is wireless, the control system designer should take into acco unt bandwidth usage and energy consumption in the control loop design, Willig [2008]. Hence, new controller structures an d PI tunings methods are required. To cope with these problems, event-based techniques for control were recently introduced,̊ Aström and Bernhardsson [1999], Tabuada [2007]. Such techniques allow an efficient u tilization of the network resources, while ensuring a desired b havior of the closed-loop system. This is achieved by exchan ging information between sensor, controllers and actuators only when relevant information is available. The use of these tec hniques has attracted much attention from the area NCSs, Wang and Lemmon [2011], and applied for PI or PID control Vasyutynskyy and Kabitzsch [2007], Rabi and Johansson [2008], Durand and Marchand [2009], Sánchez et al....
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...Additionally, when the networ k is wireless, the control system designer should take into acco unt bandwidth usage and energy consumption in the control loop design, Willig [2008]. Hence, new controller structures an d PI tunings methods are required. To cope with these problems, event-based techniques for control were recently introduced,̊ Aström and Bernhardsson [1999], Tabuada [2007]....
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References
842 citations
"On the performance of the PIDPLUS c..." refers background or methods in this paper
...For all the configurations, the PID controller parameters are calculated by the AMIGO method....
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...is the measurement filter with a time-constant Tf [16]....
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...It means that if AMIGO tuning method is used, we will have δmax ≈ 1.1L for the control system in concern....
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...Hence if L = 1, as it was in the previous simulations, the tolerable outage length in such a control system could be 1.1 s with the AMIGO tuned controller, and still the stability would be guaranteed....
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...It has been shown in [19] that if the controller (2)-(3) with a second order filter (n = 2) is used for controlling the firstorder system (11) and the controller is tuned according to the AMIGO [16] method, the obtained jitter margin (9) becomes roughly δmax ≈ 0.7L....
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696 citations
"On the performance of the PIDPLUS c..." refers background in this paper
...The randomness in delay times is caused by the MAC layer, microcontroller scheduling, low-quality clocks used in the hardware resulting in timing inaccuracies, multihop networking (routing), and the distributed and asynchronic nature of wireless control systems [4], [5], [6]....
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693 citations
"On the performance of the PIDPLUS c..." refers background in this paper
...Often the industrial applications pose stringent timing and reliability requirements [2], and with wireless solutions these are more difficult to meet than with wired due to the adverse properties of the radio channels [3]....
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634 citations
"On the performance of the PIDPLUS c..." refers background in this paper
...Often the industrial applications pose stringent timing and reliability requirements [2], and with wireless solutions these are more difficult to meet than with wired due to the adverse properties of the radio channels [3]....
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334 citations
"On the performance of the PIDPLUS c..." refers background or methods in this paper
...This stability criterion applies for a closed-loop system with process G, controller C and a variable timedelay Δ that represents the uncertain communication link (see [17] for details)....
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...A relatively simple way to evaluate the stability and robustness of a WiNCS is the jitter margin [17]....
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