Research Data/Results
Hybrid Energy Systems Laboratory

  Table 1: Comparison of Keystroke Force Necessary to Produce Action by Phone

Phone

Keystroke Force

Virgin Mobile Marble

0.42 N

Virgin Mobile Flare

0.15 N

Samsung M300

0.21 N

Motorola Boost

0.43 N

 

Graph 1: Voltage Generated vs. Mass for the PZT Actuator

 

Graph 2: Acceleration vs. Time For Flare (Ringing) Using a 3D Accelerometer

 

Table 2: Comparison of Power Output by PZT Actuator

 

Freq (Hz)

Acc (m/s2)

  Mide power (W)

490 power (W)

Set1 power (W)

571

6.25

.000831

.000232

.000494

571

2.68

.000149

.0000422

.0000131

308

.11

.00000212

.00000135

.00000374

308

3.84

.000335

.000462

.0000827

1050

.41

.00000116

.0000163

.0000153

364

1.49

.0000401

.0000328

.000219

421

.78

.00000117

.0000062

.000202

320

2.77

.000163

.000188

.000459

 

 

Graph 3: Voltage (red) and Current (blue) vs. Time for the Mide Actuator @ 571 Hz and 0.63 g 

 

3 User Profiles For Cell Phone Usage: