iMechE Challenge

iMeche challenge

Repeatable vehicle

Emaan KhanHarith Madhushan Govinna George Woodlock

Index

07. Measuring Distance

01. Challenge Info

04. Calculations

05. Circuit

08. Price List

02. Initial Ideas

09. Questions

03. Decision Matrix

06. Final Concept & CAD

01. CHallenge information

Create a repeatable vehicle mechanically.

• Moves in a straight line and touches a wall.
• Reverses back to its original position with no interference.
• Must be fully autonomous after the start switch.

The vehicle must:

• Be able to travel between 2.8- 8m
• Be within 400 x 400 x 400 mm size
• Determine distance travelled mechanically
• Travel its distance within 2 mins

02.initial ideas

03. Decision matrix

04. Calculations

• Maximum speed for the motion = 0.067 ms-1.

• Maximum acceleration for the forward motion = 0.013 ms-2. (Assuming 0.067ms-1 speed in 5s for forward direction)

• Force applied for the forward motion = 0.013 N. (Assuming mass of the vehicle as 1kg).

• Linear momentum = 0.067 kgms-1.

• Angular momentum = 2.11 * 10-3 kgm2s-1. (Rotational equivalent of linear momentum).

• Angular velocity = 2.127 s-1.

• Inertia = 0.99 kgm2. (Torque needed for a desired angular acceleration about a rotational axis).

• Torque acting on wheels = 0.4095 * 10-3Nm

04. Calculations

The Gear System

• #01 Ratio 1:1 RPM= 100
• #02 Ratio 1.8:1 RPM= 55.56
• #03 Ratio 1:1 RPM= 100
• #04 Rato 1:1.25 RPM = 125

• Dimension of our repeatable vehicle : 250 mm (length) * 200mm (width) * 75mm (height).
• Wheel diameter = 63mm

05. Circuit

06. FInal Concept & CAD

07. measuring distance

08. price list

Total = £22.02

Any questions?

THank YOU