Quatos is a nonlinear adaptive attitude controller that uses a quaternion framework to ensure uniform performance throughout the entire flight envelope. The design is similar to an indirect MRAC with a disturbance observer. Quatos manages the tradeoff between performance and robustness by using techniques modified from classical control theory. It comes coupled with a dynamic control allocation module that optimally utilizes multiple actuators (rotors) to reduce saturation events in extreme maneuvers by recalculating the power distribution matrix on the fly.
Put simply, Quatos estimates disturbances in real time and cancels them out. Coupled with Autoquads outer loop NAV controller, it constitutes a powerful state of the art control system.This results in superior performance (increased disturbance rejection, better tracking of and lesser over shoot) when compared to the conventional PID controller which it replaces. Numerous tests have shown the precise tracking that it is capable of, inspite of load imbalances, high winds and turbulence.
1000’s of hours of flight testing and pilot feedback to the design team have lead to a control system that feels intuitive and is a pleasure to fly. Correctly set up and tuned, Quatos will offer very smooth flight characteristics and a very crisp pilot control response. Take a look at our media gallery & pilot testimonials which showcase it's performance.