What would you say are the biggest challenges that you have encountered with INDI?
“Firstly, since this method is new to the field of unmanned aerial flight, it can be said that there are many unknowns that are associated with exploring new technology. Also, given the complexity of INDI compared to PID, you have to be interested in pursuing such an endeavour to begin with – it’s not everyone’s cup of tea.
On a more technical note, since INDI relies heavily on onboard sensor readings, it is generally understandable its performance is impacted by factors that affect the accuracy and validity of said sensors. Invalid data can be caused by anything from sensor defects to disturbances caused by the drone’s structure itself.
One of the things we normally do when implementing the Fusion Reflex into a new drone is that we first use the PID control method to get a better feel of the system’s dynamics under hover conditions. A small drone can rotate much faster than a large drone for example and this is very important to understand. Then we switch to INDI to let it do the rest.
It goes without saying that there will be instances where more experimentation is required, in which cases we either resort to more flight tests, or we use the wind tunnel.”