Table 3.
Specification Comparison Between Proposed Design and Three Others
| Proposed | Aufderheide10 | Demarteau11 | Lujan14 | |
|---|---|---|---|---|
| Estimated Cost | ∼$3500 | ∼$6000 | Not enough component information for estimate | Not enough component information for estimate |
| Individual sample force sensing | Yes | No | No | Yes |
| Force measurement | Resistance sensors | Load Cell | Load Cell | Electromagnetic actuators |
| Force Resolution | 12 mN | NA | NA | NA |
| Simultaneous strain variation | Yes, different plunger material | No | No | Yes, actuators move independently |
| Simultaneous offset variation | Yes, different plunger height | No | Yes, move micrometer head | Yes, would require machining |
| Contact error | 1.16%±0.93% | NA | 1.74%±0.36% | 0%±10% @ 0.1 N |
| Position measurement | 1 Linear Encoder | 2 Linear Encoders | Na | Linear encoders integrated into each of 6 actuators |
| Max motor force | 1200 N | 445 N | NA | 18 N peak, 10 N continuous |
| Platen range | 101.6 mm | 3 mm | NA | 15mm |
| Tissue culture plastic compatible | Yes | No | No | Yes |
| Max speed | 254 mm/s | 30 mm/s | NA | 1500 mm/s |
| Sample capacity | 12 | 48 | 12 | 6 |