91 GOVERNOR MENU E - Throttle
signal divider
This page is a translated version
of the page Manuals:MBPlusFblV52:Governormenu E
and the translation is 100% complete.
When using electric motors the rpm sensor signal usually consists of the (electric) field
speed. In order to obtain the actual engine speed the field speed must be divided by half
the number of motor poles. Using a 2-pole motor thus the measured speed corresponds
to the motor speed. With a 10-pole motor on the other hand the field speed is five times
higher than the actual speed. Also for nitro/gas engines the measured speed of the sensor
may be higher than the actual speed. For example when a magnetic sensor is installed and
more than one magnets are used for measuring the rotational speed, the rpm output will
be multiplied by the number of magnets. So when two sensor magnets are used the rpm
signal from the sensor will be twice the engine revolutions. So in order the rotor speed
matches the rotor speed you set with the transmitter you must specifiy the factor by how
much the incoming rpm signal must be divided to get the actual motor rpm.
The motor poles of an electric motor can be easily determined by counting the
number of magnets built into the motor housing.
Each magnet corresponds to
one magnetic pole.
Note that on some motors pairs of magnets are used rather
than one single large magnet. These pairs together form just one magnetic pole! If
in doubt refer to the datasheet of the motor or ask the manufacturer or your local dealer.
To determine the number of magnets that are used for a magnetic rpm sensor in a nitro
helicopter, you can use the Sensor Test mode of GOVERNOR MENU (Menu point
A). Each time a magnet passes the sensor the Status-LED will light up in blue color
there, i.e. when you turn the clutch bell by hand. So you simply count how often the
Status-LED lights up during one rotation. Then this is the divider you have to setup.
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https://wiki.beastx.com/./index.php/Manuals:MBPlusFblV52:Governormenu_E
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Summary of Contents for MICROBEAST PLUS
Page 1: ...BEASTX Wiki Books MBPlus 52 ENG wiki beastx com ...
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Page 88: ...SETUP MENU B Swashplate frequency 80 ...
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Page 122: ...SETUP MENU G Collective and cyclic pitch mixing CCPM 114 ...
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Page 144: ...Extra info How the gyro works Figure 102 136 ...
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Page 208: ...How to control the Governor Figure 114 Figure 115 Figure 116 200 ...
Page 211: ...Nitro Governor with separate control channel Figure 117 Figure 118 Figure 119 203 ...
Page 216: ...How to control the Governor 208 ...
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Page 221: ...93 Setup with StudioX In StudioX simply enter the rpm divider using the push buttons 213 ...
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Page 283: ...Fine tuning of AttitudeControl 275 ...
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Page 300: ...Performing factory reset at the device 292 ...
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Page 314: ...Smartphone tablet and BLE2SYS bluetooth interface 306 ...
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