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Permanent magnet synchronous machines are known as a good candidate for hybrid electric vehicles (HEV) due to their unique merits. According to the characteristic that d,q-axis inductances are not equal in interior permanent magnet synchronous motors (IPMSM), this paper introduces a maximum- torque-per-ampere (MTPA) control scheme, which can get a larger torque output under certain current condition...
A new automatic defect detection method for the steel cord conveyor belt in X-ray imaging system was studied. Detecting the state of conveyor belt is important in production process such as coal mine concerning the safety and efficiency of coal production. In order to automatically detect the conveyor belt defects that often appear such as perforation, scratch, corrosion, broken end and joint end...
This paper introduces a scheme of differential geometry and model reference adaptive theory to solve the nonlinear decoupling control problem while the machine parameters vary. As a result, two dynamical decoupled two-order subsystems between flux and speed are deduced. Simulation experiments prove the correctness about the theories and analysis.
The algorithm for selecting and stitching the joint images of the conveyer belt with steel ropes in X-ray imaging system is studied. Detecting the state of conveyer belt is important in production process such as coal mine. And selecting the joint images is a primary task for further processing, especially for the on-line nondestructive detection of product line. Moreover, in order to make the better...
A new joint detection algorithm of conveyer belt with steel ropes using the BP(back propagation) neural networks model in X-ray imaging system is proposed. Detecting the state of conveyer belt is important in production process such as coal mine. And the joint detection is a primary task for further processing. Because of the neural networks' massive parallelism and easy implementation, this paper...
In this paper, an improved multiple input-queuing (IMIQ) fabric and scheduling algorithm by employing a new energy function based on Hopfield neural network (HNN) in asynchronous transfer mode (ATM) Switches is proposed. The policy of more than one cell transferred in each input port during every time slot is adopted. Performances such as throughput, cell loss and cell delay of this new approach are...
In this paper, the design of material structure and device structure , fabrication processing and characterization on GaAs based Resonant Tunneling Transistor (RTT) with groove and self-aligned gate structure have been described completely and systematically .The experimental results measured from our fabricated RTT show that : the maximum value of Peak to Valley Current Ratio (PVCR) is 46, the transconductance...
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