WEEK 8 (5 - 10 Sept 2010)

Research about Motor.

- to find the suitable motor for use in this robot.
- to get a speed motor

DC motor

A direct current (DC) motor is a fairly simple electric motor that uses electricity and a magnetic field to produce torque, which turns the motor. At its most simple, a DC motor requires two magnets of opposite polarity and an electric coil, which acts as an electromagnet. The repellent and attractive electromagnetic forces of the magnets provide the torque that causes the DC motor to turn.


Stepper Motor

 
Features of our hybrid stepper motor include:
1. Precise Position Control, linear Speed Selection, forward & Reverse, Pause and Holding Function, long life
2. Low Vibration, Low Noise, low cost, High Speed, High Torque, High Performance, low inertia and high accuracy
3. the variety of accessories and equipment, to meet the customers in different field
4. Most of motors are made as NEMA 8, NEMA 11, NEMA 14, NEMA16, NEMA 17, NEMA17, NEMA23, NEMA24, NEMA34, NEMA 43

Servo Motor

 

    - C36S=C36R
    - Speed (sec/60deg): 0.16/4.8V, 0.14/6.0V
    - Torque (Kg-cm): 3.5/4.8V, 4.5/6.0V (Maximum 6.0V)
    - Size (mm): 40.8x20.18x36.5
    - pulse width  range: 0.546ms to 2.4ms (estimation)
    - Weight (g): 36
    - Designed for "closed feedback".
    - Able to control the position of the motor

Digital Servo

Digital Servo is controlled by a built-in microcontroller unit with sophisticated control algorithm and this will result in several advantages over the conventional standard servo such as:

• Faster respond time
• Higher torque
• Higher precision

Specification:

• Origin: Taiwan
• Plastic Gear with Ball Bearing
• Standard size servo: 40.7mm x 20mm x 37mm
• Torque: 4.1kg.cm
• Speed: 0.17 sec / 60 Degrees
• Weight: 41g
• Maximum Movement Angle: 180 degrees
• Operating Voltage: 4.5V - 6.0V
• C/W Plastic Servo Horn