Effects of Piezoelectric Material Properties of the Proportional Valve on the Dynamic Performance of a Nitrogen Gas Micro-Propulsion System

Owing to low dry mass, high precision thrust control, simple structure and no pollutions, the nitrogen gas micro-propulsion systems can meet the demands of drag-free satellites where the payload follows a geodesic path through space only perturbed by gravity and not by non-gravitational forces. In t...

Full description

Saved in:
Bibliographic Details
Published in2019 IEEE 8th International Conference on Fluid Power and Mechatronics (FPM) pp. 1076 - 1081
Main Authors Wang, Xudong, Li, Guoxiu, Chen, Jun, Wang, Zhaoli, Li, Hongmeng
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2019
Subjects
Attitude control
Bars
dynamic performance
Force
Manganese
Nitrogen
Nitrogen gas micro-propulsion system
piezoelectric proportional valve
simulation
Valves
Online AccessGet full text

Cover

More Information
Summary:Owing to low dry mass, high precision thrust control, simple structure and no pollutions, the nitrogen gas micro-propulsion systems can meet the demands of drag-free satellites where the payload follows a geodesic path through space only perturbed by gravity and not by non-gravitational forces. In this study, the nitrogen gas micro-propulsion system was modeled using AMESim software. Present onedimensional system model consisted of two nitrogen tanks, a latching valve, a pressure reducing valve and a piezoelectric proportional valve which driven by piezoelectric patches and integrated with a thruster. The nitrogen gaseous pressure in the tank and the buffer cavity of the proportional valve were set to 150 bar and approx. 2. 0 bar, respectively. The electromechanical coupling coefficient, elastic constants and relative permittivity of the piezoelectric patches were varied from 0. 518 to 0. 962, 1. 536e-l1 to 2. 834e - 11 and 3500 to 7500, respectively. The modelling results revealed that compared to elastic constants and relative permittivity, the electromechanical coupling coefficient had a most influence on the opening of valve and thrust force.
DOI:10.1109/FPM45753.2019.9035869