Control design for a pneumatic isolation table including different time delays dependent on control input polarity

Kumata, Satoshi; Narumi, Kenta; Iida, Tomoharu; Maruyama, Naoto; Tanemura, Masaya; Chida, Yuichi

doi:10.1016/j.ifacol.2017.08.1443

Cited by 1 publication

(1 citation statement)

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“…To use classical methods of research of pneumatic devices [16][17][18][19][20][21], it is necessary to know the dependence of the effective area of the pneumatic spring on its height 𝑆 𝑒 = 𝑓(𝐻 𝑝𝑠 ) and the volume on the height 𝑉 𝑝𝑠 = 𝑓(𝐻 𝑝𝑠 ). These functions make it possible to determine the pressure inside the pneumatic spring and the vertical force acting on the vehicle body.…”

Section: Study Of the Pneumatic Spring Characteristicsmentioning

confidence: 99%

Accuracy and durability increasing of the body level control systems in the immobile state of the vehicle

Savchenko¹,

Mykhalevych²,

Dróździel³

et al. 2022

Diagnostyka

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Pneumatic suspension is increasingly used in many cars. Control of a car body level is the main function of the pneumatic suspension. The experimental determination of the pneumatic spring characteristics suitable for the design and modeling of the car level control system is presented. The characteristics of the pneumatic spring are determined, that determine the quality of the control system. The effect of temperature changes inside the pneumatic spring is experimentally determined due to heat exchange on air pressure and vertical force during alignment of the car body. In addition, through modeling is evaluated by changing the level of the car body due to the impact of heat transfer. An original method of controlling the lifting and lowering of the vehicle body is proposed. The method is based on the energy balance and is the basis for reducing the number of strokes of the electropneumatic valve. The change in the level of the body due to the temperature effect is leveled due to the indirect consideration of this effect using the pressure sensor in the cylinder.

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