动力翼伞风扰补偿高度控制方法

外界风场是影响翼伞高度跟踪精度的最主要扰动因素。针对该问题,建立了动力翼伞的八自由度模型,并在传统自抗扰控制的基础上,设计一种基于风场前馈补偿的改进抗扰控制器,对外界的风场干扰进行针对性补偿,实现翼伞系统的高度跟踪控制。在通过仿真实验对控制器进行初步验证的基础上,进行了翼伞系统的实际飞行实验。在实际飞行环境下,仿真中所调节的控制器参数可直接应用于实际飞行实验,翼伞系统的平均高度跟踪误差在2.5 m以内,证明所设计的控制器存在一定的实际应用价值。

基于翼伞系统的新型末敏弹技术研究

针对传统末敏弹落点不可控、打击精度不足的问题,提出了一种基于翼伞的末敏弹落点控制技术,采用翼伞代替传统降落伞,实现其落点的精准控制。基于所提出的伞-弹系统,设计了一种基于自抗扰控制技术的伞-弹偏航角精准控制器,并抵消外界风场造成的干扰,弥补末敏弹初始位置误差,实现系统的精准自主操纵。基于上述分析,搭建了伞-弹系统,并进行了实际空投试验。在空投试验中,伞-弹系统的最终落点误差在30 m以内,空中水平最小误差在4 m以内,证明了所提出算法的有效性,为灵巧弹药的设计提供了一种新的思路。

Parameter Test and Analysis for Dynamic Compensation Devices in Wind Power Farms

The dynamic reactive power compensation equipment in Jiuquan Wind Power Base of above 10 GW consists of three different types of compensation devices, including： static var generator （SVG）, thyristor controlled compensator （TGR） and magnetically controlled reactor （MGR）. The lack of experimental verification of performance is not conducive to voltage/var management or full utilization of device capaci- ties. In order to solve the above problems, the compensation device performance test was performed. The test items and procedures were selected based on related national standards with the consideration for different grid structures and wind farm operation modes. The testing contents included dynamic regulating range, active power loss, dynamic response time, and harmonic voltage level. Three types of compensation devices installed in different wind farms, namely SVG, TCR and MCR, were chosen and tested. The performances were compared and analyzed according to the field test results.