P34
P33
GAIN
This is the primary adjustment setting for the module. Gain adjusts the force with which the stabilization module reacts
to disturbances. Higher gain settings will cause a greater reactive force, but can also lead to instability in the system.
The goal is to run the highest gain setting possible that is stable and has no oscillations. Start with a low gain setting
and work your way up. A good way to test a particular gain setting is to gently ‘tap’ the axis you are tuning and see if it
causes the mount to oscillate. If so, the gain is too high and needs to be lowered. NOTE: It is necessary to tune the
modules in the way that they will be used in the air. For the 2-axis gimbal, this means you can tune the system with the
multi-rotor sitting on the table since the gimbal is suspended by the vibration isolation system. On the 3-axis gimbal,
however, the landing gear is built onto the gimbal, so it is necessary to hang the multi-rotor or suspend it by the booms,
so that the gimbal will be suspended by the vibration isolation system while tuning. This will make a large difference in the
tuning of the system, so please do not attempt to tune the 3-axis gimbal while it is sitting on the table, as the tuning will
likely require much different gain parameters in flight. Remember to start with a low gain and work your way up. A nice
way to tune the system is to have the transmitter next to your test stand and raise the gain little by little. If you get a
setting that is too high and causes oscillations, you can simply switch the mode switch on the transmitter to “off” and
lower the gain.
SLEW RATE
This setting allows you to set the max slew rate for each axis. This will allow you to fine tune the feel of the system to your
camera operator’s preferences. If you prefer to tune the slew rate remotely via the transmitter, this is possible using the
ATV / AFR / Endpoints of your radio for the given slew channel. A slew rate setting of 60°/second is typically what we use.
Further, you can setup multiple flight modes on the camera operator’s Tx to allow different slew rates for improved control
in various filming scenarios.
ANGLE TRIM
Angle trim allows for the fine tuning of a module to account for slight errors and offsets in the mounting. Angle trim is
usually used on the roll axis to allow for slight trimming of the system to enable the user to set the system for a level
horizon. Angle trim is not needed for pan or tilt modules.
DEFAULTS
For each stabilization module, you will need to designate the module as either pan, tilt, or roll in the software. Until the
software is installed, all of the modules are identical and may be mounted in any of the pan, tilt, or roll mounting locations.
Please refer to Images 2-6 for proper mounting orientation. Whenever you connect to the modules, you MUST click “Read”
first to populate the configuration window with the current module settings. Once the modules are in the proper mounting
orientation, click “Read” and then click the appropriate default option. Next, enter your preferred configurations (see
discussion below) and click “Write” to write the data to the module. To confirm that your mounting / chosen default is
correct, rotate the mount in the corresponding direction for the module you are working on and ensure the “Current Angle”
window is changing as expected. For instance, after installing the pan module, try rotating the mount. Given proper
installation and chosen parameters, the “Current Angle” window will change as you rotate.
DEADBAND
The deadband setting adjusts how much stick travel is required before the stick demand creates a slew command. This
setting can be useful if the transmitter gimbal does not center repeatably. Its function is to prevent unwanted axis drift. The
default setting is 5%, but feel free to adjust as needed to suit your needs.
SERVO PULSE RATE
This setting adjusts the pulse rate output frequency for the mount stabilization. In general, it should be left at 400hz with
Freefly Servos for best performance. For other mounts / servos, you may need to adjust the pulse rate.
SERVO TYPE
This setting allows the user to use a standard pulse width servo (1520uS) or a narrow pulse width (760uS) servo. The
Freefly F360-0866 is a standard pulse width servo and the 1520uS setting should be used.
Summary of Contents for RADIAN
Page 1: ...VER1 0...
