Mathematic Model of Displacement Control Unit for Screw Distributor of Asphalt Paver

Abstract:

Displacement control unit is an important part of hydraulic system for screw distributor. By adjusting the angle of swashplate, it can change the flow rate of pump and rotating speed of screw distributor. The rotating speed of screw distributor has influence on quality of road. The mathematical model of displacement control unit is presented. Its dynamical characteristics are analyzed. The mathematical model includes a reset spring gradient. The reset spring gradient is much smaller than the hydraulic spring rate, the effect of the reset spring gradient can be neglected. So an inertial element can be substituted by an integration element.

• Periodical: Advanced Materials Research (Volumes 774-776)
• Pages: 295-298
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.774-776.295
• Online since: September 2013
• Authors: Zhi Nan Mi, Long An Chen, Jia Tao Tang
• Keywords: Mathematics Model, Paver, Screw Distributor

References

[1] M Li: Road Machinery & Construction Mechanization Vol. 17 (4) (2000), pp.2-4, in Chinese.

[2] J Cao, S Xong: Road Machinery & Construction Mechanization Vol. 10 (6) (1993), 9. 8-13, in Chinese.

[3] Z Lu, M Qin, X Guo: Journal of Chongqing Jiaotong University(Natural Science) Vol. 28 (1) (2009), pp.63-66, 146, in Chinese.

[4] R Xie: Road Machinery & Construction Mechanization Vol. 24 (12) (2007), pp.20-22, in Chinese.

[5] X Guo, R Li: Road Machinery & Construction Mechanization Vol. 25 (4) (2008), pp.38-41, in Chinese.

[6] S Jiao, Q Yang, W Wu: Road Machinery & Construction Mechanization Vol. 18 (4) (2001), pp.28-29, in Chinese.

[7] Y Lu, D Hu: Electrohydraulic Proportional Control Technology (Mechanical Industry Press, China 1988).