种基于LQR算法的旋翼振动主动控制方法

• Format: Patent
• Language: Chinese
• Published: 01.06.2018
• Subjects: CALCULATING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PHYSICS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

本发明公开了种基于LQR算法的旋翼振动主动控制方法，该方法首先对旋翼模型进行有限元的模态分析，求出刚度矩阵、质量矩阵和阻尼矩阵，然后将控制方程写成状态空间的表示形式。利用最优控制理论中的LQR算法，把旋翼的振动主动控制问题等价成输出调节器问题。采用基于LQR算法的振动主动控制之后，旋翼的振动剧烈程度明显改善。本发明是主动控制理论与有限元分析的联合应用，便于在旋翼的设计阶段进行振动控制预估，提高了分析效率，通过采用主动控制的方法，改善了旋翼的振动特性，对于具体应用中有很强工程实践意义。 The invention discloses an active rotor vibration control method based on the LQR (Linear Quadratic Regulator) algorithm. The method first carries out the modal analysis of finite elements on a rotor model, a stiffness matrix, a mass matrix and a damping matrix are worked out, and a control equation is then written into a state space representation. The LQR algorithm in the optimal control theory is utilized to make the active rotor vibration control problem equivalent to the output regulator problem. After active vibration control based on the LQR algorithm is adopted, the intensity of rotor vibration is obviously improved. The active rotor vibration control method is the joint application of the active control theory and finite element analysis, vibration control pre