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The current reckoning method is based on the system operation network and modeling to achieve current reckoning network model, using the link reckoning technique and branch current measurement to identification and calculation. Analysis current difference identification features, to identify bad data, then correct the bad data, on the basis of the revised branch current to determine the state changes...
The scale of the network determines the need for system partition management, the network block partition estimation makes the state estimation problem of large network converse into two medium or small network. This paper proposes combination of the innovation graph approach and the current reckoning method to form a new partition identification method, which can achieve complementary advantages...
The Current Reckoning Method is carried out in the paper, which adopts the link branch reckoning technology based on the measuring current information to achieve data digging and realize identification of bad data in the measurements set, and can identify bad data in the node injection measurement as well. Final, carry out analysis and verifying based on the modular system, which has a certain of...
In the centralized multi-sensor system, there is often a problem that how to remove measurements used early from the current state estimation, then re-calculate the current state estimation. The interacting multiple model (IMM) algorithm with removing old measurement presented by Bar-shalom is based on the standard IMM algorithm and Bl1 algorithm. However, in the standard IMM algorithm, the combination...
In this paper, a kind of method in natural gas energy measurement is improved based on traditional flow automatic metering system of natural gas, which combines with natural gas composition analysis software in order to measure natural gas energy. Then, it introduces the uncertainty and the traceability of natural gas.
In order to calibrate the frequency dependence of ac standard resistor more accurately, improvements of double helix standard resistor and Kelvin resistance bridge at NIM are made and described in this paper. The experimental results show that the dc resistance stability of the AC/DC calculable resistor is enhanced by one order and the measurement uncertainty of the bridge is decreased.
Two reasons, inappropriate measurement station deployment and considering large size target as ideal particle, brings large error in multi- photoelectric theodolite intersection measurement for aviation weapon test. In order to overcome these two problems, firstly, a new method to estimate the actual target position based on common vertical-line of the two intersection planes is proposed, it includes...
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