Closed-loop control of ionization oscillations in Hall accelerators

Barral, S.; Kaczmarczyk, J.; Kurzyna, J.; Dudeck, M.
August 2011
Physics of Plasmas;Aug2011, Vol. 18 Issue 8, p083504
Academic Journal
Feedback control of ionization oscillations in Hall accelerators is investigated with a proportional-integral-derivative controller acting on the discharge voltage. The stability of the current is found to systematically improve with proportional control, whereas integral and derivative control have in most cases a detrimental or insignificant impact. At low discharge voltages, proportional control eliminates at the same time ionization breathing oscillations as well as a coexisting low frequency mode. A progressive deterioration of the stability is observed at higher voltage, presumably attributable to the limited output voltage range of the controller. The time-averaged characteristics of the discharge such as average current, thrust and efficiency, remain unchanged within measurement uncertainties.


Related Articles

  • Particle-in-cell simulation of a double stage Hall thruster. Yu, Daren; Song, Maojiang; Liu, H.; Ding, Y. J.; Li, Hong // Physics of Plasmas;Mar2012, Vol. 19 Issue 3, p033503 

    The purpose of inventing a double stage Hall thruster is to control the propellant ionization and ion acceleration independently. In order to better understand the physics involved in such a thruster, an improved particle-in-cell method is used in this paper to simulate the discharge process. It...

  • Perturbation analysis of ionization oscillations in Hall effect thrusters. Hara, Kentaro; Sekerak, Michael J.; Boyd, Iain D.; Gallimore, Alec D. // Physics of Plasmas;2014, Vol. 21 Issue 12, p1 

    A perturbation analysis of ionization oscillations, which cause low frequency oscillations of the discharge plasma, in Hall effect thrusters is presented including the electron energy equation in addition to heavy-species transport. Excitation and stabilization of such oscillations, often called...

  • Density dependence of capillary plasma on the pressure and applied voltage. Uhm, Han S.; Jang, Dong G.; Kim, Min S.; Suk, Hyyong // Physics of Plasmas;Feb2012, Vol. 19 Issue 2, p024501 

    Based on a simple theoretical model, the density properties of the electrical discharge in a capillary plasma system are investigated in terms of the hydrogen pressure and applied voltage. The electron density in the capillary during the electrical discharge is calculated from a theoretical...

  • Effect of ionization distribution on the low frequency oscillations mode in Hall thrusters. Liqiu, Wei; Chunsheng, Wang; Ke, Han; Daren, Yu // Physics of Plasmas;Jan2012, Vol. 19 Issue 1, p012107 

    It is found that the discharge parameters have notable effects on the mode of discharge current low frequency oscillation in Hall thrusters, but different discharge parameters might form the similar low frequency oscillation mode. In order to study the mechanism of oscillation mode formation,...

  • Breakdown properties of high-pressure electrical discharge. Uhm, Han S.; Choi, Eun H.; Cho, Guangsup // Physics of Plasmas;Jun2000, Vol. 7 Issue 6 

    A simple scaling law of the electrical breakdown is obtained. Introducing the normalized net ionization-rate ξ, the electrical breakdown phenomenon is uniquely described in terms of the ionization properties of the gas, the second ionization coefficient γ at cathode, and the gas pressure...

  • ESD Control for Class 0 ESDS Devices. Peirce, Roger // Circuits Assembly;Apr2008, Vol. 19 Issue 4, p50 

    This article discusses ways for protecting Class 0 electrostatic discharge(ESD)-sensitive (ESDS) devices between 20 and 100 volts. Constant monitoring is needed when using wrist strap grounding for 100-volt programs or below. Antistatic materials are used to keep ESDS devices sliding against...

  • Study of applied magnetic field magnetoplasmadynamic thrusters with particle-in-cell and Monte Carlo collision. II. Investigation of acceleration mechanisms. Tang, Hai-Bin; Cheng, Jiao; Liu, Chang; York, Thomas M. // Physics of Plasmas;Jul2012, Vol. 19 Issue 7, p073108 

    The particle-in-cell method previously described in paper (I) has been applied to the investigation of acceleration mechanisms in applied-field magnetoplasmadynamic thrusters. This new approach is an alternative to magnetohydrodynamics models and allows nonlocal dynamic effects of particles and...

  • Experimental studies of ionization processes in the breakdown phase of a transient hollow.... Choi, P.; Aliaga, R. // Applied Physics Letters;11/15/1993, Vol. 63 Issue 20, p2750 

    Examines the ionization process in the prebreakdown phase of a transient hollow cathode discharge. Parameters of discharge operation; Use of the capacitive probe array in the measurement of spatial and temporal evolution of plasma formation; Relation of the virtual anode with the electron beam...

  • Account of ionization mechanism in low-pressure Ar-Hg discharges. Lin, Tingsheng; Goto, Toshio; Arai, Toshihiko; Murayama, Seiichi // Journal of Applied Physics;4/15/1991, Vol. 69 Issue 8, p4201 

    Presents a study which clarified the ionization mechanism in low-pressure argon-mercury discharges for mercury lamps. Calculation of ionization rate; Measurement of electron density and electron temperature; Ionization processes and rate formulas.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics