随着移动设备对高功率、高效率充电需求的不断增长,通用串行总线功率传输(Universal Serial Bus Power Delivery,USB PD)协议逐渐成为移动电源设计的核心标准。简要论述USB PD协议,研究磁吸充电技术、Buck-Boost工作模式及保护电路模块...随着移动设备对高功率、高效率充电需求的不断增长,通用串行总线功率传输(Universal Serial Bus Power Delivery,USB PD)协议逐渐成为移动电源设计的核心标准。简要论述USB PD协议,研究磁吸充电技术、Buck-Boost工作模式及保护电路模块的优化设计,提出磁吸移动电源优化方案,旨在为磁吸移动电源的标准化与高效设计提供技术参考。展开更多
The mathematical model of quadcopter-unmanned aerial vehicle （UAV） is derived by using two approaches： One is the Newton-Euler approach which is formulated using classical meehanics; and other is the Euler-Lagrange...The mathematical model of quadcopter-unmanned aerial vehicle （UAV） is derived by using two approaches： One is the Newton-Euler approach which is formulated using classical meehanics; and other is the Euler-Lagrange approach which describes the model in terms of kinetic （translational and rotational） and potential energy. The proposed quadcopter＇s non-linear model is incorporated with aero-dynamical forces generated by air resistance, which helps aircraft to exhibits more realistic behavior while hovering. Based on the obtained model, the suitable control strategy is developed, under which two effective flight control systems are developed. Each control system is created by cascading the proportional-derivative （PD） and T-S fuzzy controllers that are equipped with six and twelve feedback signals individually respectively to ensure better tracking, stabilization, and response. Both pro- posed flight control designs are then implemented with the quadcopter model respectively and multitudinous simulations are conducted using MATLAB/Simulink to analyze the tracking performance of the quadcopter model at various reference inputs and trajectories.展开更多
文摘随着移动设备对高功率、高效率充电需求的不断增长,通用串行总线功率传输(Universal Serial Bus Power Delivery,USB PD)协议逐渐成为移动电源设计的核心标准。简要论述USB PD协议,研究磁吸充电技术、Buck-Boost工作模式及保护电路模块的优化设计,提出磁吸移动电源优化方案,旨在为磁吸移动电源的标准化与高效设计提供技术参考。
基金supported by the National Natural Science Foundation of China(Nos.61673209,61741313,61304223)the Aeronautical Science Foundation(Nos.2016ZA52009)+1 种基金the Jiangsu Six Peak of Talents Program(No.KTHY-027)the Fundamental Research Funds for the Central Universities(Nos.NJ20160026,NS2017015)
文摘The mathematical model of quadcopter-unmanned aerial vehicle （UAV） is derived by using two approaches： One is the Newton-Euler approach which is formulated using classical meehanics; and other is the Euler-Lagrange approach which describes the model in terms of kinetic （translational and rotational） and potential energy. The proposed quadcopter＇s non-linear model is incorporated with aero-dynamical forces generated by air resistance, which helps aircraft to exhibits more realistic behavior while hovering. Based on the obtained model, the suitable control strategy is developed, under which two effective flight control systems are developed. Each control system is created by cascading the proportional-derivative （PD） and T-S fuzzy controllers that are equipped with six and twelve feedback signals individually respectively to ensure better tracking, stabilization, and response. Both pro- posed flight control designs are then implemented with the quadcopter model respectively and multitudinous simulations are conducted using MATLAB/Simulink to analyze the tracking performance of the quadcopter model at various reference inputs and trajectories.
