排序方式: 共有13条查询结果,搜索用时 15 毫秒
11.
12.
The self-discharge losses in several lithium-ion cell designs have been measured by three different methods. The losses are separated into time-dependent and state-of-charge dependent contributions. For most cycling conditions, the time-dependent self-discharge losses are dominant; however, after several months of stand on open circuit or float charge, the state-of-charge dependent losses become significant. The self-discharge rate has been found to not increase monotonically with state-of-charge, but to drop somewhat at intermediate states of charge. The implications of these measurements for maintaining balanced cell capacities in batteries and establishing optimum storage voltage levels for batteries are discussed. 相似文献
13.
A current problem in aircraft navigation is determining how to effect alow cost navigation system consistent with required mission operationswhich will render a high degree of accuracy and reliability. One wayto achieve this is through optimum integration of equipment,subsystems, and computer mechanizations. Consistent with this approach,the overall objectives of this paper are to show the advantages of anoptimally integrated aircraft navigation system, and to illustrate howto effect a low cost navigation system with high accuracy performance.An integrated aircraft navigation system employing a Kalman optimumestimation filter is configured and analyzed in detail. The results ofthe analysis clearly indicate how to achieve high accuracy performanceusing low cost subsystems; namely, via optimum systems integration. 相似文献