Dynamic characteristics of pneumatic actuators of automatic and remote control systems

The calculation and design of pneumatic drives with enhanced dynamic characteristics is very important for developing modern pneumatic automatic control systems. Pneumatic actuators are widely used in automatic and remote control systems and typically consist of a drive and a control or overlapping device. The developed power and force depend on the drive torque and power characteristics of the control or overlapping device. Dynamic characteristics are functions of the valve or shutter shape. It is normal that such valves and shutters have significant unbalanced moments that the drive should overcome. It is shown that the application of shaped throttle valves tested by using aerodynamic testing benches that have a significantly lower counter torque, shutters, as well as balanced valves makes it possible to significantly reduce the power of required pneumatic actuators. Techniques to improve the quality of control in case of pneumatic actuators in automatic control systems are proposed.

References

[1] Nazemtsev A.S. Gidravlicheskie i pnevmaticheskie sistemy. Chast’ 1. Pnevmaticheskie privody i sredstva avtomatizatsii [Hydraulic and pneumatic systems. Part 1: Pneumatic actuators and automation]. Moscow, Forum publ., 2004. 240 p.

[2] Nazemtsev A.S., Rybal’chenko D.E. Gidravlicheskie i pnevmaticheskie sistemy. Chast’ 2. Pnevmaticheskie privody i sistemy. Osnovy [Hydraulic and pneumatic systems. Part 2. Pneumatic actuators and systems. Basics]. Moscow, Forum publ., 2007. 250 p.

[3] Nazemtsev A.S. Pnevmaticheskie i gidravlicheskie privody i sistemy [Pneumatic and hydraulic actuators and systems]. Omsk, Omsk State Technical University publ., 2008. 88 p.

[4] Nikitin O.F. Gidravlika i gidropnevmoprivod [Hydraulics and Gidropnevmoprivod]. Moscow, Bauman Press, 2010. 414 p.

[5] Popov D.N., Panaiotti S.S., Riabinin M.V. Gidromekhanika [Gidromexanika]. Moscow, Bauman Press, 2014. 317 p.

[6] Popov D.N. Dinamika i regulirovanie gidro- i pnevmosistem [Dynamics and regulation of hydraulic and pneumatic systems]. Mezhdunarodnyi simpozium po izmeritel’nym informatsionnym sistemam. Kazan’, 5–7 dekabria 2006 [International Symposium on measuring information systems. Kazan 5–7 December 2006]. Moscow, Kraus publ., pp. 52–159.

[7] Vakuumnaia tekhnika: spravochnik [Vacuum Technology: A Handbook]. Ed. Demikhov K.E., Panfilov Iu.V. Moscow, Mashinostroenie publ., 2009. 590 p.

[8] Nestatsionarnye sistemy avtomaticheskogo upravleniia [Unsteady automatic control system]. Ed. Egupov N.D., Pupkov K.A. Moscow, Bauman Press, 2007. 632 p.

[9] Teplotekhnika [Thermotechnics]. Ed. Arkharov A.M., Afanas’ev V.N. Moscow, Bauman Press, 2011. 792 p.