F.Y.P.1 ~ 7th Week: #Research - Servo Motor

To perform a locomotion robot that follow the rules provided by Intersection Challenge, I will use a servo motor to perform the robot movement smoothly.

The servo motor is type of encoder to provide position and speed feedback. The feedback loop will provide a precise control of the mechanical degree of freedom driven by the motor.

Figure below is the servo motor under my surveillance:

Specification:

- Stall torque :  3.5~4.4kg/cm  
- Motion speed :  0.15~0.12sec  
- Rating voltage : DC 4.8-6V
- Dimension :  40.7x20.5x39.5mm  
- Weight : 43g

Specification:

- Stall torque : 8.0~10.0kg/cm

- Motion speed : 0.12sec

- Rating voltage : DC 3-6V

- Dimension : 21x12x22mm

- Weight : 9g  

Specification:
- Stall torque : 8.0~10.0kg/cm
- Motion speed : 0.09~0.07sec
- Rating voltage : DC 4.8-6V
- Dimension : 40.3x20.1x36mm
- Weight : 52.2g

Each of the servo motor had its own capability and speed. Such as 52.2g servomotor can achieve motion speed from 0.07sec till 0.09sec but the price is quite expensive. The 9g servomotor is quite small while it can achieve motion speed up to 0.12sec and the price is cheaper then the other one.

As for now, I'm still surveying the suitable servo motor as to keep my robot stable and can move smoothly.

F.Y.P.1 ~ 6th Week: #Research - Block Diagram

In this week, I'm going to figure out the robot structure to perform a robot movement as Locomotion.

Block Diagram: Robot Structure Design

From this diagram, the robot will be implement sensor array or infrared sensor as to detect any outcome obstacle. This sensor will react on radiated surface then produce analog signal that will be transmit to the comparator or transistor. 

The comparator will determine and measure the radiated surface. Then the result from comparator will be read by micro-controller in binary form.  

The PIC as the micro-controller will do justification while providing instruction on to motor driver or servo controller. This servo controller will transmit a pulse towards the servo motor  to move. This may perform a basic movement of the robot.

Next, I will do some research about the servo motor as to gain more understanding for the robot to perform a locomotion movement