Sistemas de Control Basados en Red. Modelado y Diseño de Estructuras de Control.

J. Salt, V. Casanova, A. Cuenca, R. Pizá

Resumen

En este trabajo se pretende introducir un tema que últimamente está cobrando un fuerte impulso entre investigadores y usuarios de sistemas de control. Desde los trabajos seminales de Halevi y Ray (1988a,b) el interés por este tipo de sistemas que conjugan las redes teleinformáticas con esquemas de control ha ido creciendo hasta el extremo de que ya es rara la ausencia de trabajos en este ámbito en un gran número de revistas o en los Congresos más importantes que además suelen contar con sesiones específicas de este tema concreto. La orientación de este trabajo es la de hacer una amplia introducción del tema, de tal manera que en el ámbito profesional de la Automática se pueda tener una primera toma de contacto encontrando aquellas referencias más importantes que permitan profundizar en el planteamiento del control en tiempo real de este tipo de instalaciones. Se ha establecido un conjunto de propuestas de solución desde el punto de vista de la Automática, pero es preciso aclarar que no es el único aunque sí el menos estudiado. Hay alternativas asentadas desde el punto de vista de sistemas teleinformáticos gestionando de forma óptima recursos y/o planificando tareas lo que da lugar a protocolos específicos que mejoran la calidad de servicio y el funcionamiento de este tipo de esquemas. Además se aprovecha la ocasión para apuntar algunas de las soluciones específicas que los autores han considerado ante diferentes alternativas de tratamiento de distintos aspectos de este tipo de sistemas. De esta forma se apunta a técnicas de control digital con muestreo no-convencional dentro de las que se puede encontrar los sistemas periódicos y multifrecuenciales como la base de concepción de una serie de opciones de resolución para el modelado y el diseño de sistemas con estas características.

Palabras clave

Sistemas de Control Basados en Red; Multifrecuencia; Comunicaciones; Bus de Campo; Retardos; Control por eventos

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Referencias

Almutairi, N. B., Chow, M-Y., Tipsuwan, Y. (2001). Network-based controlled DC motor with fuzzy compensation. Proceedings of the 27th annual conference of IEEE industrial electronics society, Denver (EEUU), pp. 1844-1849.

Almutairi, N. B., Chow, M-Y. (2003). Stabilization of networked PI control system using fuzzy logic modulation. Proceedings of the 22nd American Control Conference, Denver (EEUU), pp. 975-980.

Almutairi, N. B., Chow, M-Y. (2002). PI parameterization using adaptive fuzzy modulation (AFM) for IP networked PI control systems - Part II: Full adaptation. Proceedings of the 28th annual conference of IEEE industrial electronics society, Sevilla (España), pp. 3158-3163.

Astrom, K.J., Hang, C.C., Lim, B.C. (1994). A new Smith predictor for controlling a process with an integrator and long dead-time. IEEE transactions on Automatic Control, vol. 39, no. 2, pp. 343-345.

Bamieh, B., Pearson, J.B., Francis, B.A., Tannenbaum, A. (1991). A lifting technique for linear periodic systems with applications to sampled-data control. Systems & Control Letters, vol. 17, no. 2 pp. 79-88.

Baños, A., Barreiro, A. (2007) Delay-dependent stability of reset control systems. Proc. American Control Conference, pp. 5509-5515.

Bauer, P.H., Premaratne, K. (1998). Variable bit-rate control and stability of distributed sensor networks. Proceedings of IASTED conference on signal processing and communications, Tenerife (España), pp. 199-202.

Bauer, P.H., Sichitiu, M., Premaratne, K. (1999). Closing the loop through communication networks: The case of an integrator plant and multiple controllers. Proceedings of IEEE conference on decision and control", Phoenix (USA), pp. 2180-2185.

Bauer, P.H., Sichitiu, M., Premaratne, K. (2001a). On the nature of the time-variant communication delays. Proceedings of IAESTED conference on modeling, identification and control, Insbruck (Austria), pp. 792- 797.

Bauer, P.H., Sichitiu, M., Premaratne, K. (2001b) Stability of 2-D distributed processes with time-variant communication delays. Proceedings of IEEE ISCAS, Sydney (Australia), vol. II, pp. 497-500.

Bauer, P.H., Sichitiu, M., Lorand, C., Premaratne, K. (2001c). Total delay compensation in LAN control systems ans implications for scheduling. Proceedings of American Control Conference, Arlington (USA), pp. 4300-4305.

Beldiman, O., Walsh, G.C. (2000). Predictors for networked control systems. Proceedings of the 19th American Control Conference, Chicago (EEUU), pp. 2347-2351.

Beldiman, O., Bushnell L.G., Walsh, G.C., Wang. H.O., Hong, Y. (2001). Perturbations in networked control systems. Proceedings of the 2001 ASME IMECE symposium on networked control systems.

Branicky, M.S. (1997). Stability of hybrid systems: State of the art”. Proceedings of the 36th IEEE conference on decision and control, San Diego (EEUU), pp. 120-125.

Branicky, M.S., Borkar, V.S., Mitter, S.K. (1998). A unified framework for hybrid control: Model and optimal control theory. IEEE transactions on Automatic Control, vol. 43, no. 1, pp. 31-45.

Branicky, M.S., Phillips, S.M., Zhang, W. (2000). Stability of networked control systems: Explicit analysis of delay Proceedings of the 19th American Control Conference, Chicago (EEUU), pp. 2352-2357.

Branicky, M.S., Phillips, S.M., Zhang, W. (2002). Scheduling and feedback co-design for networked control systems. Proceedings of the 41st IEEE Conference on Decision and Control, Las Vegas (EEUU), pp. 1211- 1217.

Branicky, M.S., Liberatore, V., Phillips, S.M. (2003). Networked control system co-simulation for co-design. Proceedings of the 22nd American Control Conference, Denver (EEUU), pp. 3341-3346.

Bushnell L.G. (2001). Networks and control. IEEE Control Systems Magazine, vol. 21, no. 1, pp. 22-23.

Calvo, I, Marcos, M., Orive, D., Sarachaga, I. (2006). Methodology Based on Distributed Object Oriented Technologies for Providing Remote Access to Industrial Plants. Control Engineering Practice, Vol 14, NIM 8, August, 2006, pp:975-990, Elsevier.

Cao, W-J., Liu, X., Lim, C, Soh, Y-C. (2005). Frequencydomain Transfer Function of digital multirate controller with current estimator. IEEE transactions on Control Systems Technology, vol. 13, nº 1.

Casanova, V., Salt, J. (2000). Multirate control for an ICCS environment. Part I: The random access delays. Proceedings of 2nd IFAC Workshop on linear time delay systems, Ancona (Italia).

Casanova, V., Salt, J. (2002). Real-time implementation of multirate control techniques for an ICCS. Proceedings of 15th IFAC world congress, Barcelona (España).

Casanova, V., Salt, J. (2003). Multirate control implementation for an integrated communication and control system. Control Engineering Practice, vol. 11, no, 11, pp. 1335-1348.

Casanova, V., Salt, J. (2004). Digital modeling and control with irregular D/A conversion. Proceedings of 2nd International conference on computing, communication and control technologies (Volume IV). Austin (EEUU).

Casanova, V., Mascaros, V., Salt, J.,Cuenca, A. (2006a). Simulation Model for a Networked Control System over Profibus DP. Proc. of the IEEE CCA/CACSD/ISIC. Munich.

Casanova, V., Salt, J., Cuenca, A. (2006b). Irregular actuation and sampling in a networked control system over Profibus-DP. Proceedings of 32nd annual conference of the IEEE Industrial Electronics Society, Paris (France).

Casanova, V., Salt, J., Cuenca, A., Pizá, R. (2007). Networked control systems with information recovery over Profibus-DP. Proceedings of the 7th International Conference on Fieldbuses and Networks in Industrial and Embedded Sistems, Toulouse (France).

Cena, G., Demartini, C., Valenzano, A. (1997). On the performances of two popular fieldbuses. Proceedings IEEE international workshop on factory communication systems”, pp. 177-186.

Coffey, T.C., Williams, I.J. (1966). Stability analysis of multiloop, multirate sampled systems. AIAA Journal of Guidance, Control and Dynamics, vol. 4, no. 12, pp. 2178-2190.

Cuenca, A. Salt, J., Albertos, P. (2007). Implementation of algebraic controllers for non-conventional sampled data systems. Real Time Systems. Vol. 35, pp. 59-89.

Chan, H., Özgüner, Ü. (1995). Closed-loop control of systems over a communication network with queues. Int. J. Control, vol. 62, nº 3, pp. 493-510.

Chow, M-Y., Tipsuwan, Y. (2001a). Network-based control systems: A tutorial. Proceedings of the 27th annual conference of IEEE industrial electronics society, Denver (EEUU), pp. 1593-1602.

Chow, M-Y., Tipsuwan, Y. (2001b). Network-based control adaptation for network QoS variation. Proceedings of 2001 IEEE military communications conference, Vienna (EEUU), pp. 257-261.

Chow, M-Y., Tipsuwan, Y. (2003). Gain Adaptation of Networked DC Motor Controllers based on QOS Variations. IEEE transactions on Industrial Electronics, vol. 5, nº 5.

Chow, M-Y. (2003). Methodologies in time sensitive network-based control systems. IEEE/ASME International Conference on Advanced Intelligent Mechatronics, Kobe (Japón).

Estevez, E., Marcos, M., Orive, D. (2007). Automatic Generation of PLC Automation Projects from Component-Based Models. The Int. Journal of Advanced Manufacturing Technology. Editorial Springer.

Francis, B.A., Georgiou, T.T. (1988). Stability theory for linear time-invariant plants with periodic digital controllers. IEEE Transactions on Automatic Control, vol. 33, no. 9, pp. 820-832.

García-Rivera, M.; A. Barreiro (2007). Analysis of Networked Control Systems with Drops and Variable Delays., Automatica. (article in Press).

Goodwin, G.C., Quevedo, D.E., Silva, E.I. (2006). An Introduction to Networked Control Systems. Proceedings of Asian Control Conference 2006. ASCC06. Plenary Lecture.

Gopinath, R.A., Burms, C.S. (1994). On upsampling, downsampling, and rational sampling rate filter banks. IEEE Transactions on Signal Processing, vol. 42, no. 4, pp. 812-824.

Halevi, Y., Ray, A. (1988a). Integrated Communication and Control Systems: Part I-Analysis. ASME Journal of Dynamic Systems, Measurement and Control, vol. 110, pp. 367-373.

Halevi, Y., Ray, A. (1988b). Integrated Communication and Control Systems: Part II-Design Considerations. ASME Journal of Dynamic Systems, Measurement and Control., vol. 110, pp. 374-381.

Halevi, Y., Ray, A. (1990). Performance analysis of integrated communication and control systems networks. ASME Journal of dynamics systems, measurement and control, vol. 112, pp. 365-370.

Hespanha, J., Naghshtabrizi, P., Xu, Y. (2007). A survey of Recent Results in Networked Control Systems. Proceeding of IEEE, Vol 95, nº 1, pp. 138-162.

Hong, S.H. (1995). Scheduling algorithm of data sampling times in the integrated communication and control systems. IEEE transactions on Control Systems Technology, Vol. 3, nº 2, pp. 25-230.

Isermann, R. (1989). Digital Control Systems. Ed. Springer Verlag.

Johannessen, S. (2004). Time Synchronization in a Local Area Network. IEEE Control Systems Magazine, Vol. 24, nº 2.

Khargonekar, P.P., Poolla, K., Tannenbaumb, A.S. (1985). Robust control of linear time-invariant plant using periodic compensation. IEEE Transactions on Automatic Control, vol. 30, pp. 1088-1096.

Kim, W-J., Ji, K., Ambike, A. (2006). Real-Time Operating Environment for Networked Control Systems. IEEE Transactions on Automation Science and Engineering, Vol. 3, nº 3.

Krotolica, R., Özgüner, U., Chan, H., Goktas, H., Winkelman, J., Liubakka, M. (1994). Stability of linear feedback systems with random communication delays. International Journal of Control, vol. 59, no. 4, pp. 925- 953.

Lee, D., Allan, J., Thompson, H. A., Benett, S. (2001). PID control for a distributed system with a smart actuator. Control Engineering Practice, vol 9, pp. 1235-1244.

Lee, K.C., Lee, S., Lee, M.H. (2003). Remote Fuzzy Logic Control of Networked Control System via Profibus-DP. IEEE transactions on Industrial Electronics, vol. 50, nº 4.

Lee, K.C., Lee, S., Lee, M.H. (2006). QoS-Based Remote Control of Networked Control Systems via Profibus Token Passing Control. IEEE Transactions on Industrial Informatics, vol. 1, nº 3.

Lee, D-J., Tomizuka, M. (2003). Multirate Optimal State Estimation with Sensor Fusion. Proc. Of the American Control Conference, Denver, Colorado. June 4-6.

Lian, F-L., Moyne, J.R., Tilbury, D.M. (2000). Control performance study of a networked machining cell. Proceedings of the 19th American Control Conference, Chicago (EEUU), pp. 2337-2341.

Lian, F-L., Moyne, J.R., Tilbury, D.M. (2001a). Performance evaluation of control networks: Ethernet, ControlNet, and DeviceNet. IEEE Control Systems Magazine, vol. 21, no. 1, pp. 66-83.

Lian, F-L., Moyne, J.R., Tilbury, D.M. (2001b). Analysis and modeling of networked control systems: MIMO case with multiple time delays. Proceedings of American Control Conference, Arlington (USA), pp. 4306-4312.

Lian, F-L., Moyne, J.R., Tilbury, D.M. (2001c) Time delay modeling and sample time selection for networked control systems. Proceedings of ASME dynamics systems and control division.

Lian, F-L., Moyne, J.R., Tilbury, D.M. (2002a). Optimal controller design and evaluation for a class of networked control systems with distributed constant delays. Proceedings of American Control Conference, Anchorage (USA), pp. 3009-3014.

Lian, F-L., Moyne, J.R., Tilbury, D.M. (2002b). Network design consideration for distributed control systems. IEEE transactions on Control Systems Technology, vol. 10, no. 2, pp. 297-307.

Lian, F-L., Yook, J.K., Otanez, P.G., Tilbury, D.M., Moyne, J.R. (2003). Design of sampling and transmission rates for achieving control and communication performance in networked agent systems. Proceedings of the 22nd American Control Conference, Denver (EEUU), pp. 3329-3334.

Liou, L.W., Ray, A. (1990). Integrated communication and control systems: Part III - Nonidentical sensor and controller sampling. ASME Journal of dynamics systems, measurement and control, vol. 112, pp. 357-364.

Liou, L.W., Ray, A. (1990). On modelling of integrated communication and control systems. ASME Journal of dynamic dystems, measurement and control, vol. 112, pp. 790-794.

Liou, L.W., Ray, A. (1991a). A stochastic regulator for integrated communication and control systems: Part I – Formulation of control law. ASME Journal of dynamics systems, measurement and control, vol. 113, pp. 604-611.

Liou, L.W., Ray, A. (1991b). A Stochastic Regulator for integrated communication and control systems: Part II – Numerical analysis and simulation. ASME Journal of dynamic dystems, measurement and control, vol. 113, pp. 612-619.

Lorand, C., Sichitiu, M., Bauer, P.H., Schmidt, G. (2000). Stability of first orden discrete time systems with timevariant communication delays in the feedback path. Proceedings of IEEE Asia Pacific conference on circuits and systems, Tianjin (China).

Luck, R., Ray A. (1990). An observer-based compensator for distributed delays. Automatica, vol. 26, no. 5, pp. 903- 908.

Luck, R., A. Ray. (1994). Experimental verification of a delay compensation algorithm for integrated communication and control systems. International Journal of Control, vol. 59, no. 6, pp. 1357-1372.

Martí, P., Yépez, J.,Velasco, M., Villà, R., Fuertes, J.M.. (2004). Managing Quality.of.Control in networked-based control systems by controller and message scheduling codesign., IEEE transactions on Industrial Electronics, Vol. 51, No. 6, pp. 1159-1167.

Montestruque y Antsaklis. (2003a). On the model-based control of networked systems. Automatica, vol. 39, nº 10, pp. 1837-1843.

Montestruque y Antsaklis. (2003b). Stochastic stability for model-based networked control systems. Proceedings of de American Control Conference, Volume: 5, pp: 4119- 4124.

Montestruque y Antsaklis. (2004). Stability of Model-Based networked control systems with time-varying transmission times. IEEE transactions on Automatic Control, vol. 49, nº 9, September 2004.

Moyne, J.R., Tilbury, D.M. (2007). The Emergence of Industrial Control Networks for Manufacturing Control, Diagnostics, and Safety Data. Proceedings of the IEEE. Vol. 95, nº1, pp. 29-47.

Nilsson, J. (1998). Real-time control systems with delays. Ph.D. thesis, Lund Institute of Technology (Sweden). (1998).

Otanez, P.G., Moyne, J.R., Tilbury, D.M. (2002a). Using deadbands to reduce communication in networked control systems. Proceedings of American Control Conference, Anchorage (USA).

Otanez, P.G., Parrott, J.T., Moyne, J.R., Tilbury, D.M. (2002b). The implications of ethernet as a control network. Proceedings of global powertrain conference, Ann Arbor (USA).

Park, H.S., Kim, Y.H., Kim, D-S., Kwon, W.H. (2002). A scheduling method for network-based control systems. IEEE transactions on Control Systems Technology, vol. 10, no. 3, pp. 318-330.

Poplys, N.J. Kawka, P.A., Alleyne, A.G. (2004). ClosedLoop control over Wireless Networks. IEEE Control Systems Magazine, vol. 24, nº 3.

Ray, A. (1989). Introduction to networking for integrated control systems. IEEE Control System Magazine, vol. 9, no. 1, pp. 76-79.

Ray, A. (1994). Output feedback control under randomly varying distributed delays. Journal of guidance, control and dynamics, vol. 17, no. 4, pp. 701-711.

Sala, A. (2005). Computer Control under Time-varying sampling period: an LMI gridding approach. Automatica, Vol. 41, pp. 2077-2082.

Sala, A. (2007). Improving Performance Under SamplingRate Variations via Generalized Hold Functions. IEEE transactions on Control Systems Technology, vol. 15, n.4, pp. 794-797.

Salt, J., Casanova, V. (2000). Multirate control for an ICCS environment. Part II: The time skew problem. Proceedings of 2nd IFAC Workshop on linear time delay systems, Ancona (Italia).

Salt, J., Cuenca, A. (2002). “Algebric design of multirate controllers”. Proceedings of 15th IFAC world congress, Barcelona (España).

Salt, J., Casanova, V. (2004). Digital modeling and control with irregular A/D conversion. Proceedings of 2nd International conference on computing, communication and control technologies (Volume IV). Austin (EEUU).

Salt, J., Albertos, P. (2005). Model-based multirate controllers design. IEEE Transactions on Control Systems Technology, vol. 13, no. 6, pp. 988-997. (2005).

Salt, J., Cuenca, A., Casanova, V., Mascaros, V. (2006a). A PID Dual Rate Controller Implementation over a Networked Control System. Proceedings of the IEEE CCA/CACSD/ISIC. Munich.

Salt, J., Cuenca, A., Albertos, P., Casanova, V (2006b). Algebraic design of multi-rate control systems for environments with limited random delays. Proceedings of 32nd annual conference of the IEEE Industrial Electronics Society, Paris (France).

Sandoval J., Salt J. (2007). Calculation of the approximated Frequency Response of Sampled-Data Systems using Kranc Operators. Proceedings of the IEEE Electronics, Robotics, and Automotive Mechanics Conference, Cuernavaca, Morelos, México, pp.118-122.

Sandoval J., Salt J. (2007). Ajuste estructural basado en la respuesta en frecuencia de reguladores bifrecuenciales. Actas del XXIV Congreso Internacional de Ingeniería Electrónica, Chihuahua, México, pp. 509-514.

Santacesaria, C., Scattolini, R. (1993). Easy tuning of Smith predictor in presence of delay uncertainty. Automatica, vol. 29, no. 6, pp. 1595-1597. (1993).

Santos, M., Stemmer, M., Vasques, F. (2003). Evaluation of the Timing Properties of Two Control Networks: CAN and PROFIBUS. International Simposium on Industrial Electronics 2003, ISIE’03. Vol. 2, pp.874-879.

Sichitiu, M., Bauer, P.H., Premaratne, K. (2001) The effect of uncertain time variant delays in ATM networks with explicit rate feedback. Proceedings of American Control Conference, Arlington (USA), pp. 4537-4543.

Sinopoli, B., Schenato, L, Franceschetti, M., Poolla, K., Jordan, M.I., Sastry, S.S. Kalman filtering with intermittent observatios. IEEE transactions on Automatic Control, vol. 49, nº 9, pp.1453-1464, Sep. 2004.

Smith, O.J.M. (1957). Close control of loops with dead time. Chemical Engineering Progress, vol. 53, no. 5, pp. 217- 219.

Tarn, T.J., Xi, N. (1998). Planning and control of internetbased teleoperation. Proceedings of SPIE: Telemanipulator and telepresence technologies, Vol. 3524, pp. 189-193, Boston, MA.

Tipsuwan, Y., Chow, M-Y. (2001). Network-based controller adaptation based on QoS negotiation and deterioration. Proceedings of the 27th annual conference of IEEE industrial electronics society, Denver (EEUU), pp. 1794-1799.

Tipsuwan, Y., Chow, M-Y. (2002a). Gain adaptation of networked mobile robot to compensate QoS deterioration. Proceedings of the 28th annual conference of IEEE industrial electronics society, Sevilla (España), pp. 3146- 3155.

Tipsuwan, Y. Chow, M-Y. (2002b). PI Parameterization using adaptive fuzzy modulation (AFM) for networked control systems-Part I: Partial Adaptation. Proceedings IEEE IECON ’02, pp. 3152-3157, Seville, Spain.

Tipsuwan, Y. Chow, M-Y. (2003). Control Methodologies in networked control systems. Control Engineering Practice, vol. 11, pp. 1099-1111.

Tipsuwan, Y., Chow, M-Y. (2004a). Gain Scheduler Middleware: A methodology to enable existing controllers for networkedcontrol and teleoperation- Part I: Networked Control., IEEE Transactions on Industrial Electronics, vol. 51, nº 6.

Tipsuwan, Y., Chow, M-Y. (2004b). Gain scheduler middleware: A methodology to enable existing controllers for networked control and teleoperation - Part II: Teleoperations. IEEE transactions on Industrial Electronics, vol. 51, no. 6, pp. 1228-1237.

Tipsuwan, Y. Chow, M-Y. (2004c). On the gain scheduling for a networked PI controller over IP network. IEEE/ASME Transactions on Mechatronics, vol. 9, nº 3.

Törngren, M. (1995). Modelling and design of distributed real-time control applications. Ph.D. thesis, Royal Institute of Technology (Sweden).

Törngren, M. (1998). Fundamentals of implementing realtime control applications in distributed computer systems. Real-time systems, vol. 14, pp. 219-250.

Tovar, E., Vasques, F. (1999). Real-Time Fieldbus Communications using Profibus Networks. IEEE transactions on Industrial Electronics, Vol. 46, nº 6.

Velasco, M.; Marti, P.; Villa, R.; Fuertes, J.M. (2005). Stability of networked control systems with bounded sampling rates and time delays. Industrial Electronics Society, 2005. IECON 2005. 32nd Annual Conference of IEEE.

Vélez, C.M., Salt, J. (2000). Simulation of irregular multirate systems. Proceedings of 8th symposium of computer aided control system design, Salford (Gran Bretaña).

Vélez, C.M., Salt, J. (2004). “Control multifrecuencia en tiempo real utilizando herramientas CASCD”. Revista iberoamericana de automática e informática industrial, vol. 1, pp. 43-52.

Walsh, G.C., Ye, H. (2001) Scheduling of Networked Control Systems. IEEE Control Systems Magazine, pp.57-65.

Walsh, G.C., Beldiman, O., Bushnell L.G. (2001). Asymptotic behaviour of nonlinear networked control systems. IEEE transactions on automatic control, vol. 46, no. 7, pp. 1093-1097.

Walsh, G.C., Ye, H., Bushnell. L.G. (2002a) Stability Analysis of Networked Control Systems. IEEE Transactions on Control Systems Technology, Vol.10, nº3, pp.438-446.

Walsh, G.C., Beldiman, O., Bushnell L.G. (2002b). Error encoding algorithms for networked control systems. Automatica, vol. 38, no. 2, pp. 261-267.

Watanabe, K., Nobuyama, E., Kojima, A. (1996). Recent advances in control of time delay systems – A tutorial review. Proceedings of the 35th IEEE Conference on Decision and Control, Kobe (Japan), pp. 2083-2088.

Wittenmark, B., Nilsson, J., Törngren, M. (1995). Timing problems in real-time control systems. Proceedings of American control conference, Seattle (USA), pp. 2000- 2004.

Wittenmark, B., Bastian, B., Nilsson, J. (1998). Analysis of Time Delays in Synchronous and Asynchronous Control Loops. Proc. Of the 37th IEEE Conference on Decision and Control, Florida, USA.

Yang, T.C. (2006). Networked Control System: a brief survey. IEE Proc.-Control Theory Appl. Vol 153, nº 4.

Yook, J.K., Tilbury, D.M., Sopakar, N.R. (2001). A design method for distributed control systems to optimize in the presence of time delays. International Journal of Control, vol. 74, no. 1 pp. 58-76.

Yook, J.K., Tilbury, D.M., Sopakar, N.R. (2002). Trading computation for bandwidth: reducing communication in distributed control systems using state estimators. IEEE transactions on control systems technology, vol. 10, no. 4, pp. 503-518.

Zhang, W., Branicky, M.S. (2001). Stability of networked control systems with time-varying transmission period. Proceedings of the 39th Allerton conference on communication, control, and computing, Urbana (EEUU).

Zhang, W., Branicky, M.S., Phillips, S.R. (2001). Stability of networked control systems. IEEE Control Systems Magazine, vol. 21, no. 1, pp. 84-99.

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