The DC series motor is widely used in heavy duty applications. The state estimation problem of this nonlinear system poses difficulties owing to the complex mathematical structure and turn out to be more challenging w...
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The traditional scheduling strategy based on the predicted value of battery swapping demand faces difficulties in adapting to dynamic interference factors and accumulating prediction errors in practical applications. ...
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While the electromagnetic micropump has lowvoltage driving characteristic, it requires continuous energy loss in the form of Joule heating during operations, which can be significantly problematic for battery-driven a...
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ISBN:
(纸本)9781665476331
While the electromagnetic micropump has lowvoltage driving characteristic, it requires continuous energy loss in the form of Joule heating during operations, which can be significantly problematic for battery-driven applications. This paper presents a design and control method of an energy-efficient electromagnetic bi-stable actuator for low-power micropump systems in battery-driven and low-power applications such as wearable drug delivery devices. The proposed actuator design achieves the magnetic bi-stability with the PM-biased flux, reducing the required power by providing zero-power passive latching force and by enabling reciprocating motions with only a short pulsatile current excitation. We also present in this paper the energy-efficient pulse control method using a relationship of the coil voltage and the mover velocity in order to achieve robust switching motions with minimized switching energy. The low-voltage low-power characteristic of the proposed actuator and the feasibility of the control method are experimentally validated. The measured minimum voltage and switching energy are 0.43V and 1.88 mJ, respectively. The flow volume of the fabricated micropump prototype is measured to be 1.94 mu l per latching motion.
The relationships between entities in a document are extracted according to natural language processing methods. Deep neural network is used to recognize the required multi-label text. According to the general specifi...
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In the context of urban road following scenarios, ensuring the precise speed prediction and control of electric vehicle while rigorously maintaining the safe driving conditions has persistently presented a formidable ...
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CLLC converter is a promising topology for isolated bidirectional converter applications such as aerospace power supply, uninterruptible Power Supply, high dynamic control is required. In this paper, an improved dynam...
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The Internet of Things (IoT) technology uses small and cost-effective sensors for various applications, such as Industrial IoT. However, these sensor nodes are powered by fixed-size batteries, which creates a trade-of...
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ISBN:
(纸本)9798350303582;9798350303599
The Internet of Things (IoT) technology uses small and cost-effective sensors for various applications, such as Industrial IoT. However, these sensor nodes are powered by fixed-size batteries, which creates a trade-off between network performance and long-term sustainability. Moreover, some applications require the network to provide a certain level of service, such as a lower delay for critical data, while ensuring the operational reliability of sensor nodes. To address this energy challenge, external energy harvesting sources, such as solar and wind, offer promising and eco-friendly solutions. However, the available energy from a single energy source is insufficient to meet these requirements. This drives the utilization of a hybrid energy harvesting approach, such as the integration of solar and wind energy harvesters, to increase the amount of harvested energy. Nevertheless, to fully utilize the available energy, which is dynamic in nature, the sensor node must adapt its operation to ensure sustainable operation and enhanced network performance. Therefore, this paper proposes a hybrid energy harvesting-based energy neutral operation (ENO) medium access control (MAC) protocol, called HENO-MAC, that allows the receiver node to harvest energy from the solar-wind harvesters and adapt its duty cycle accordingly. The performance of the proposed HENO-MAC was evaluated using the latest realistic solar and wind data for two consecutive days in GreenCastalia. The simulation results demonstrate that the duty cycle mechanism of HENO-MAC effectively utilizes the harvested energy to achieve ENO and uses the available energy resources efficiently to reduce the packet delay for all packets and the highest priority packet by up to 28.5% and 27.3%, respectively, when compared with other existing MAC protocols.
To forecast the output power of distributed photovoltaic accurately, a short-time forecasting method based on generative adversarial networks (GAN) and long short-term memory (LSTM) is proposed in this paper. Firstly,...
This paper practically implements and compares different Sinusoidal Pulse Width Modulation (SPWM) techniques on a grid-connected seven-level Cascaded H-Bridge Multilevel Inverter (CHBMLI). The implementation is perfor...
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To address the issues of privacy protection and user access control in electronic health record (EHR) sharing process, this research proposes a blockchain-based secure EHR sharing and access control model to improve t...
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