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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - High Precision Control of an Inertially Stabilized Platform for Aerial Remote Sensing Applications
摘要： Inertially stabilized platform (ISP) is an important component of the aerial remote sensing system, which is used to make the imaging sensors stable so as to obtain the high quality images by disturbance rejection. To improve the stabilization accuracy of an ISP under multi-source disturbance environment, an active disturbance rejection control (ADRC) control scheme is prosed, which is composed of three components, i.e., a tracking differentiator (TD), a nonlinear state error feedback (NLSEF) and an extended state observer (ESO). To verify the method, the experiments are carried out. The results show that the proposed method can improve the stabilization accuracy due to significant ability in disturbances rejection.
关键词： Inertially stabilized platform,empirical method,active disturbance rejection control,disturbances rejection
更新于2025-09-23 15:22:29
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FPGA-based active disturbance rejection control and maximum power point tracking for a photovoltaic system
摘要： This paper presents a system for tracking the maximum power point (MPP) and output voltage regulation of photovoltaic cells. The system includes two stages of cascading dc/dc converters: the first one is a boost converter used for tracking the MPP using the perturb and observe algorithm. Meanwhile, a buck converter regulates the output voltage employing the active disturbance rejection control based on an extended state observer and the differential flatness property. The hardware architecture was modeled using high-level tools of hardware abstraction and implemented in a FPGA Artix-7 made by Xilinx. Finally, the performance of the proposed system is shown through a series of experiments that consisted of changing the irradiance and temperature conditions and changes in the system parameters.
关键词： PV system,MPPT,active disturbance rejection control,perturb and observe
更新于2025-09-23 15:21:01