aliasing in gazebo simulator [closed]
I have ros installed according to this setup with px4 as the flight controller ( https://pixhawk.org/dev/ros/sitl ).
I was testing the gazebo simulator using the iris quad-rotor model and changed some of the measurement parameters (weight, length of arms) in the iris.xacro file.
When I change the weight parameter specifically (to a much lighter weight) I get the following error for all the motors:
Error [gazebo_motor_model.cpp:136] Aliasing on motor [0] might occur. Consider making smaller simulation time steps or raising the rotor_velocity_slowdown_sim_ param.
I'm not sure what the rotor_velocity_slowdown_sim_ param does but increasing it did not fix the problem. I'm not sure why aliasing would occur because of a weight change? Is there any way to fix this?