Relations among Resolution, Electronic Gear Ratio, Pulse Number per Rotation and Quarter Frequency
Generally speaking, the resolution of the 17-bit encoder is 131072 of the 17th power, which means that the motor needs 131072 pulses to rotate a circle.
In order to convert and amplify the number of pulses sent by the controller, the electronic gear ratio is often used. For example, when the electronic gear ratio is 10:1, the controller sends one pulse and the motor rotates 10 pulses. The number of pulses per turn is the number of pulses required for the motor to rotate one turn.
Electronic gear ratio = encoder resolution/number of pulses per revolution.
Quadruple frequency is only used when the encoder is fed back to the controller with the driver. Encoder feedback * 4 = the number of pulses per turn of the controller.
For example, if there is a conventional 17-bit encoder, the controller sends 10,000 pulsed motors for one turn, and the number of pulses fed back to the controller by the motor per turn is 10,000, then:
The actual number of pulses per turn = resolution = 2 ^ 17 = 131072. Electronic gear ratio (controller/driver) = 10000/131072. Motor feedback pulse per turn = 10000/4 = 2500.
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