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摆动扫描式地球敏感器电信号源研究 被引量:4
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作者 斯祝华 丰平 朱莲枝 《空间控制技术与应用》 2013年第5期29-33,57,共6页
摆动扫描式地球敏感器常采用电信号源作为激励参与卫星地面测试.为更真实揭示敏感器自身特性以及减小信号源误差,推导了敏感器测量方程和扫描方程,分析了电信号源的误差来源,并提出了改进的地球敏感器信号源实现算法.该方法概念清晰,计... 摆动扫描式地球敏感器常采用电信号源作为激励参与卫星地面测试.为更真实揭示敏感器自身特性以及减小信号源误差,推导了敏感器测量方程和扫描方程,分析了电信号源的误差来源,并提出了改进的地球敏感器信号源实现算法.该方法概念清晰,计算量小.试验测试结果表明该算法提高了地球敏感器信号源精度. 展开更多
关键词 地球敏感器 电信号源 算法
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Adaptive controller design based on input-output signal selection for voltage source converter high voltage direct current systems to improve power system stability 被引量:2
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作者 Abdolkhalegh Hamidi Jamal Beiza +1 位作者 Ebrahim Babaei Sohrab Khanmohammadi 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第9期2254-2267,共14页
An input-output signal selection based on Phillips-Heffron model of a parallel high voltage alternative current/high voltage direct current(HVAC/HVDC) power system is presented to study power system stability. It is w... An input-output signal selection based on Phillips-Heffron model of a parallel high voltage alternative current/high voltage direct current(HVAC/HVDC) power system is presented to study power system stability. It is well known that appropriate coupling of inputs-outputs signals in the multivariable HVDC-HVAC system can improve the performance of designed supplemetary controller. In this work, different analysis techniques are used to measure controllability and observability of electromechanical oscillation mode. Also inputs–outputs interactions are considered and suggestions are drawn to select the best signal pair through the system inputs-outputs. In addition, a supplementary online adaptive controller for nonlinear HVDC to damp low frequency oscillations in a weakly connected system is proposed. The results obtained using MATLAB software show that the best output-input for damping controller design is rotor speed deviation as out put and phase angle of rectifier as in put. Also response of system equipped with adaptive damping controller based on HVDC system has appropriate performance when it is faced with faults and disturbance. 展开更多
关键词 input-output signal selection online adaptive damping controller nonlinear high voltage direct current power systemstability
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