Application of State Estimation Methods to Low-Temperature Plasma Dynamics
- Resource Type
- Conference
- Authors
- Greve, Christine; Hara, Kentaro; Majji, Manoranjan
- Source
- 2021 60th IEEE Conference on Decision and Control (CDC) Decision and Control (CDC), 2021 60th IEEE Conference on. :1-5 Dec, 2021
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Transportation
Temperature measurement
Adaptation models
Attitude control
Plasma measurements
Hall effect
Discharges (electric)
Plasmas
- Language
- ISSN
- 2576-2370
A state estimation technique is applied to two different plasma dynamical systems: spacecraft electric propulsion and plasma processing devices. Physical constraints are accounted for in the extended Kalman filter by adapting the process and measurement noise covariances to ensure that the model remains consistent with the physics. This modified filter is first used to investigate discharge current oscillations in a Hall effect thruster. Then, the filter is applied to an argon global model of a plasma discharge to estimate the absorbed power input from experimental data. Both applications demonstrate that plasma density fluctuations can be used to estimate the dynamics of other plasma properties in the system, such as electron properties and reaction rate coefficients.