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In order to cancel mechanical sensors in the speed controller system of PMSM, a method of rotor position detection speed/position observation based on active control is proposed. It composed active control strategy of observer according to the error between measured current and observed current, then the rotor's speed/position can be calculated with back-EMF which is estimated. Simulation results...
Listwise is an important approach in learning to rank. Most of the existing lisewise methods use a linear ranking function which can only achieve a limited performance being applied to complex ranking problem. This paper proposes a non-linear listwise algorithm inspired by boosting and clustering. Different from the previous listwise approaches, our algorithm constructs weak rankers through directly...
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