4. Concept Selection - m-division-2018-2019/Team-17 GitHub Wiki
Designs:
Design 1-
Design 2
Design 3
Design 4
Below are identified and prioritised objectives:
- Remote Operation
- Picking and Placing
- Stability
- Responsive
- Size
Assigning weightage for the stated objectives
| Objectives | Weightage |
|---|---|
| Remote Operation | 10 |
| Picking and Placing | 8 |
| Stability | 7 |
| Responsive | 6 |
| Size | 5 |
PUGH Chart
| Objectives | Weightage | Design Idea 1 | Design Idea 2 | Design Idea 3 | Design Idea 4 |
|---|---|---|---|---|---|
| Remote Operation | 10 | Datum | + | + | 0 |
| Picking and Placing | 8 | Datum | - | + | - |
| Stability | 7 | Datum | - | + | - |
| Responsive | 6 | Datum | - | - | - |
| Size | 5 | Datum | -- | 0 | + |
| +Score | 10 | +22 | +5 | ||
| -Score | -31 | -6 | -21 | ||
| Total | -21 | +16 | -16 |
Design Idea 1
| Objective | Score Given | Justification |
|---|---|---|
| Remote Operation | Datum | Chosen as datum because of simplicity of system and multi-functionality |
| Picking and Placing | ||
| Stability | ||
| Responsive | ||
| Size |
Design Idea 2
| Objective | Score Given | Justification |
|---|---|---|
| Remote Operation | + | It is easier to use a smartphone than design a band for the specific controlling of the machine. |
| Picking and Placing | - | Machine uses vacuum to pickup and hold objects which is not as efficient as the simple gripper mechanism design 1 makes use of |
| Stability | - | The added weight due to vacuum and vacuum box makes the system less stable |
| Responsive | 0 | ------------------------------------------------------------- |
| Size | -- | The structure being movable and having a vacuum box attached makes it a lot less compact than design 1. |
Design Idea 3
| Objective | Score Given | Justification |
|---|---|---|
| Remote Operation | + | It is easier to use a smartphone than design a band for the specific controlling of the machine |
| Picking and Placing | + | It is easier to control a stationary structure to pick and place the objects as compared to a moving gesture based robot |
| Stability | + | The wide base and strong joints makes the system more stable |
| Responsive | 0 | ------------------------------------------------------------- |
| Size | 0 | The structure has appropriate horizontal and vertical dimensions to perform the functions we need |
Design Idea 4
| Objective | Score Given | Justification |
|---|---|---|
| Remote Operation | 0 | |
| Picking and Placing | - | Using a hook to pick the objects up is not as easy and efficient as using a gripper |
| Stability | - | The length of the linkage mechanism, despite being reinforced with hydraulic mechanism makes it less stable |
| Responsive | - | The wi-fi module installed for the glove doesn't offer as much security as the bluetooth module installed for design 1 |
| Size | + | The lack of sound box/speaker in the system makes it more compact |