In this paper, we conduct research on the development of mechanical and electrical integration of system function principle and related technologies. Along with the rapid and continuous development of modem science an...In this paper, we conduct research on the development of mechanical and electrical integration of system function principle and related technologies. Along with the rapid and continuous development of modem science and technology, it ＇ s for the penetration and cross of different subjects great push, the more important is caused by technological revolution in the field of engineering and mechanical engineering field under the rapid development of computer technology and microelectronic technology and penetration to the mechanical and electrical integration, which is formed by the mechanical industry lead to trigger a particularly large changes in the mechanical industry management system and mode of production, product and technical structure, composition and function, thus result in industrial production from the previous mechanical electrification progressively electromechanical integration which lead the trend of the current technology.展开更多
The double-scale lead zirconate titanate （PZT） piezoelectric ceramics were prepared by the solid state processing with PZT nano-crystalline and micro-powder. The microstructures, electrical and mechanical properties...The double-scale lead zirconate titanate （PZT） piezoelectric ceramics were prepared by the solid state processing with PZT nano-crystalline and micro-powder. The microstructures, electrical and mechanical properties of the double-scale PZT are investigated. All the sintered ceramics exhibit a single perovskite structure and the grain size of the dou ble-scale PZT reduces due to the incorporation of PZT nano-crystalline. Compared to normal PZT, the mechanical properties increase significantly and the piezoelectric properties decrease slightly. Mechanisms responsible for the reinforcement of the double-scale PZT are discussed.展开更多
为提高综合能源系统(integrated energy system, IES)低碳规划及优化运行的技术水平,推进能源结构低碳转型及新型电力系统建设,梳理和总结研究学者在IES的模型构建、系统规划、运行调度等方面的研究成果,该文开展了相关领域的综述研究...为提高综合能源系统(integrated energy system, IES)低碳规划及优化运行的技术水平,推进能源结构低碳转型及新型电力系统建设,梳理和总结研究学者在IES的模型构建、系统规划、运行调度等方面的研究成果,该文开展了相关领域的综述研究。首先,阐述了综合能源系统的典型架构、典型设备及其能流特性。其次,针对IES低碳规划和运行策略及其相关支撑技术,分别论述了多态不确定性模型及功率预测、柔性负荷调控策略、IES参与电力辅助服务及其低碳运营机制、优化模型及其求解算法等方面的技术路线及研究成果;研究表明,规划与运行策略是支撑IES低碳、高效、经济运行水平的关键技术,计及不确定性的高维、非线性、多目标、非凸问题的精确建模和快速求解等难点问题亟待深入研究。最后,展望了人工智能、大数据、电力物联网等新技术在IES低碳规划和运行方面的应用前景,归纳了该领域亟待应对的技术挑战和关键问题。展开更多
文摘In this paper, we conduct research on the development of mechanical and electrical integration of system function principle and related technologies. Along with the rapid and continuous development of modem science and technology, it ＇ s for the penetration and cross of different subjects great push, the more important is caused by technological revolution in the field of engineering and mechanical engineering field under the rapid development of computer technology and microelectronic technology and penetration to the mechanical and electrical integration, which is formed by the mechanical industry lead to trigger a particularly large changes in the mechanical industry management system and mode of production, product and technical structure, composition and function, thus result in industrial production from the previous mechanical electrification progressively electromechanical integration which lead the trend of the current technology.
基金Supported by the National Natural Science Foundation of China under Grant Nos 50742007 and 50972015, the National High Technology Research and Development Program of China under Grant No 2007AA03Z103, the National Defense Fund under Grant No 401050301 and the Key Laboratory Foundation of Sonar Technology of China under Grant No 9140C24KF0901.
文摘The double-scale lead zirconate titanate （PZT） piezoelectric ceramics were prepared by the solid state processing with PZT nano-crystalline and micro-powder. The microstructures, electrical and mechanical properties of the double-scale PZT are investigated. All the sintered ceramics exhibit a single perovskite structure and the grain size of the dou ble-scale PZT reduces due to the incorporation of PZT nano-crystalline. Compared to normal PZT, the mechanical properties increase significantly and the piezoelectric properties decrease slightly. Mechanisms responsible for the reinforcement of the double-scale PZT are discussed.
文摘为提高综合能源系统(integrated energy system, IES)低碳规划及优化运行的技术水平,推进能源结构低碳转型及新型电力系统建设,梳理和总结研究学者在IES的模型构建、系统规划、运行调度等方面的研究成果,该文开展了相关领域的综述研究。首先,阐述了综合能源系统的典型架构、典型设备及其能流特性。其次,针对IES低碳规划和运行策略及其相关支撑技术,分别论述了多态不确定性模型及功率预测、柔性负荷调控策略、IES参与电力辅助服务及其低碳运营机制、优化模型及其求解算法等方面的技术路线及研究成果;研究表明,规划与运行策略是支撑IES低碳、高效、经济运行水平的关键技术,计及不确定性的高维、非线性、多目标、非凸问题的精确建模和快速求解等难点问题亟待深入研究。最后,展望了人工智能、大数据、电力物联网等新技术在IES低碳规划和运行方面的应用前景,归纳了该领域亟待应对的技术挑战和关键问题。
