Abstract
Operation of battery-powered portable systems can no longer be sustained once a battery becomes discharged. Maximization of the battery lifetime is a difficult task due to nonlinearity of battery behavior that depends on the characteristics of the system load profile. We address the problem of task sequencing without and with voltage/clock scaling that shapes the profile so that the battery lifetime is maximized. We developed an accurate analytical battery model and validated it with measurements taken on a real lithium-ion battery used in a pocket computer. We use the model as a basis for a unique battery-conscious cost function and utilize its properties to develop several novel algorithms, including insertion of recovery periods and voltage/clock scaling for delay slack distribution.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings - Design Automation Conference |
| Pages | 189-194 |
| Number of pages | 6 |
| State | Published - 2002 |
| Event | 39th Annual Design Automation Conference, DAC'02 - New Orleans, LA, United States Duration: Jun 10 2002 → Jun 14 2002 |
Other
| Other | 39th Annual Design Automation Conference, DAC'02 |
|---|---|
| Country/Territory | United States |
| City | New Orleans, LA |
| Period | 6/10/02 → 6/14/02 |
Keywords
- Battery
- Low-power design
- Modeling
- Scheduling
- Voltage scaling
ASJC Scopus subject areas
- Hardware and Architecture
- Control and Systems Engineering