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Servomotor comparison #5

Closed jlamperez closed 8 years ago

jlamperez commented 8 years ago

Servomotor comparison

Characteristics Futaba S3003 Turnigy MX-907E Turnigy 620DMG Dynamixel AX-12A Dynamixel MX-28T
Weight (g) 37.2 20 52 55 72
Dimensions (mm) 41 x 20 x 36 35 x 15 x 30 40.5 x 20 x 42 32 x 50 x 40 35.6 x 50.6 x 35.5
Gear ratio - - - 254:1 193:1
Network interface - - - TTL Half Duplex Async Serial TTL / RS-485
Control System +Pulse Width Control 1520 usec Neutral Analog Digital Digital Digital
Required Pulse 3-5 V Pk-Pk square wave - - - -
Position sensor Potentiometer Potentiometer Potentiometer Potentiometer (10 bits) Magnetic Encoder (12 bits)
Operating angle 45º 60º - 300 º or continuous 360 º or continuous
360 modifiable Yes No - Yes Yes
Motor 3 Pole Ferrite Coreless 3 Pole Cored Maxon motor
Operation voltage(V) 4.8 - 6.0 4.8 4.8 - 6.0 9 - 12 (Rec. 11.1) 10 - 14.8 (Rec. 12)
Stall torque(kg·cm) 3.2 - 4.1 2.5 10.6 at 6V 15.3 at 11.1 V 25.5 at 12V
Stall current(A) - - able to push 7A 900 mA max current 1.7 A
Current drain 7.2 - 8 mA/idle - - 50 mA -
Direction Counter Clockwise/Pulse Traveling 1520-1900usec - - - -
No load speed(RPM) 48 (0,21 sec/60 º) 125 (0.08sec/60°) 77 (0.13 sec/60º) 6V 59 (0.169sec/60º) 55
Operating temperature range (ºC) -20 to 60 -20 to 60 - -5 to 70 -5 to 80
Potentiometer drive Indirect Drive - - - -
Bearing type Plastic Twin BB Double ball (Si-oil) - -
Gear type Nylon Plastic - Plastic Hardened Steel
Price 10 € 7 € 18 € 50 € 200 €
Other - - - Position Feedback. PID controller for position, strenght and torque. 3mbps Com speed. CPU: Cortex M3 (STM32F103C8@72MHZ, 32 Bit)

References: Futaba S3003 Turnigy 620DMG + HS Dynamixel AX-12A Dynamixel MX-28T Hi-tec