航天返回与遥感
航天返迴與遙感
항천반회여요감
SPACECRAFT RECOVERY & REMOTE SENSING
2014年
5期
61-71
,共11页
遥感相机%扫描系统%同步控制%广义预测%交叉耦合
遙感相機%掃描繫統%同步控製%廣義預測%交扠耦閤
요감상궤%소묘계통%동보공제%엄의예측%교차우합
remote sensing camera%scanning system%synchronization control%generalized predictive%cross coupling
针对遥感相机扫描系统双转动装置的同步控制要求,提出一种基于广义预测模型的交叉耦合同步控制策略。建立基于广义预测控制的模型,结合交叉耦合同步控制策略,实现双转动装置的控制精度要求。为了使交叉耦合同步算法提供的误差在两个电动机中的分配更加合理,引入分配因子,并进行自适应选择,最终削弱由于系统特性的不匹配及环境的不确定性等因素产生的双转动扫描系统同步误差,使其满足控制精度的要求。通过仿真实验,发现随着预测步数的增大,系统的同步误差减小,控制精度提高,满足同步控制精度的要求,验证了所提出方法的有效性。
針對遙感相機掃描繫統雙轉動裝置的同步控製要求,提齣一種基于廣義預測模型的交扠耦閤同步控製策略。建立基于廣義預測控製的模型,結閤交扠耦閤同步控製策略,實現雙轉動裝置的控製精度要求。為瞭使交扠耦閤同步算法提供的誤差在兩箇電動機中的分配更加閤理,引入分配因子,併進行自適應選擇,最終削弱由于繫統特性的不匹配及環境的不確定性等因素產生的雙轉動掃描繫統同步誤差,使其滿足控製精度的要求。通過倣真實驗,髮現隨著預測步數的增大,繫統的同步誤差減小,控製精度提高,滿足同步控製精度的要求,驗證瞭所提齣方法的有效性。
침대요감상궤소묘계통쌍전동장치적동보공제요구,제출일충기우엄의예측모형적교차우합동보공제책략。건립기우엄의예측공제적모형,결합교차우합동보공제책략,실현쌍전동장치적공제정도요구。위료사교차우합동보산법제공적오차재량개전동궤중적분배경가합리,인입분배인자,병진행자괄응선택,최종삭약유우계통특성적불필배급배경적불학정성등인소산생적쌍전동소묘계통동보오차,사기만족공제정도적요구。통과방진실험,발현수착예측보수적증대,계통적동보오차감소,공제정도제고,만족동보공제정도적요구,험증료소제출방법적유효성。
A cross coupling synchronization control strategy is proposed to satisfy the accuracy require-ment for dual-revolution equipment in infrared camera scanning system. To achieve the control accuracy, a general predictive control model is built and the synchronization control strategy is combined. Owing to the angular speeds of two motors are identical, the distribution coefficient is introduced to balance two system synchronization error weight by adaptive method. The final objective is to weaken the unmatched control char-acteristics and the environmental uncertainties and to satisfy the control accuracy requirement. Through the simulation experiment, the synchronization error decreases with the evolution of prediction step, and the control accuracy is improved, the synchronization accuracy requirement of system is satisfied. The effectiveness is verified by simulation method.