An advantage of an LQR controller is that you can guarantee stable margins. The Boeing 777 uses LQR control for its lateral and directional axes. LQR controllers can track a constant command. A type 1 controller is needed to follow a constant command. LQR controllers don’t work well with systems with time-delay components as it would require feeding back an infinite number of states. Therefore a Pade approximation is used for time-delay systems. LQR control is a type of MIMO control system.
[[LQR Problem]]
[[Disadvantages of LQR]]
[[JDAM]] -used LQR controller.
[[X-29 Lateral Directional Model]] – LQR-PI model
LQR-PI Controller
[[AUV Control Systems]]
[[LQR Controller Design]]
[[Boeing 767]] – used LQR controller
[[Boeing X-32]] – used this controller
[[UCAV]] – Boeing UCAV used LQR control
[[JDAMMT]] -used LQR
[[F-15 Active]] used LQR
[[Type 1 System]]
[[Pade Approximation]] – used to approximate time delay for use in LQR and other methods
[[Turbulence Ride Control]]
[[X-31A Flight Control Laws]] – LQR controller
Oblique Wing Aircraft – Used experimental simulated LQR controllers
Eurofighter Roll Command Path – uses an LQ regulator for higher sensitivity at high amplitudes
[[Foiling Catamaran]] – can use an LQR controller
[[HyRaII Project]] – used a 10-state LQR controller
Sources
- LearningLookingFuture
- WhyPadeApproximations
- courtheynMultivariableControlLaw
Backlinks
[[Boeing 777]]
[[Controller Design]]
[[MIMO]]
[[Multivariable Flight Control]]
[[Types of Feedback Controllers]]