The Bang-Bang controller has an oscillating error as there are only maximal deflections of the control surfaces. Due to the hysteresis of the control actuator, if the deadband is not selected properly it may prematurely wear out the actuators. Bang-Bang controllers are vulnerable to noise, and they result in excessive thruster or control system actuation. It can be difficult to consider the switching restrictions when designing feedback control systems with bang-bang controllers.
Pilot-Induced Oscillations – if a control system not explicitly designed for it reaches bang-bang behavior, it might mean that the system is saturated and can cause a PIO
Sources
- X. Wang, D. Wang, S. Zhu, and E. K. Poh, “Fractional Describing Function Analysis of PWPF Modulator,” Mathematical Problems in Engineering, vol. 2013, p. e287040, Feb. 2013, doi: 10.1155/2013/287040.
- N. Khalili and A. Ghorbanpour, “Optimal Tuning of Single-Axis Satellite Attitude Control Parameters Using Genetic Algorithm,” Oct. 2020. doi: 10.1115/DSCC2020-3212.
- J. Bals and K. H. Kienitz, “A COMPREHENSIVE APPROACH TO PULSE MODULATION FOR ATTITUDE CONTROL WITH THRUSTERS SUBJECT TO SWITCHING RESTRICTIONS”.
Backlinks
[[Bang-Bang Controller]]
[[Chattering]]
Deadband Control