摘要
直驱式容积控制电液伺服系统具有结构紧凑、效率高等优点,但该系统也存在着死区和非线性特征。为了解决该问题,本文建立了直驱式容积控制电液伺服系统的状态方程并对其进行了离散化。采用三阶积分链式微分器,通过对活塞杆位移的信号进行微分,实时得到活塞杆的速度和加速度信号,构成系统的全状态反馈。采用基于趋近率的离散滑模控制算法设计控制器并进行仿真和实验研究,结果表明,该控制器的位置跟踪特性明显优于PID控制器,能够提高直驱式容积控制电液伺服系统的控制性能。
Direct Drive Volume Control（DDVC）servo system is a novel hydraulic servo system.With the continuous development of motor servo technology,it has been widely used in industrial and aerospace applications.The system has advantages of compact structure and high efficiency,but also has defects in dead zone and non-linear characteristics.In order to solve these problems,the state equation of the system was established and discretized.By using the third-order integral chain differentiator,the real-time values of the rod velocity and acceleration were obtained from the measurement signal of displacement,which constitute the full state feed-back control system.A nonlinear controller was designed with the Discrete Variable Structure Control（DVSC）algorithm based on the approach law.The simulation and experimental results show that the DVSC controller has better position tracing characteristics than traditional PID controller, which improves the controlling performance of DDVC servo system.
作者
姜继海
葛泽华
杨晨
梁海健
JIANG Ji-hai1, GE Ze-hua1 , YANG Chen2 , LIANG Hai-jian1(1. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150080, China ; 2. AECC Aero Engine Control System Institute, Wuxi 214063, China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2018年第5期1492-1499,共8页
Journal of Jilin University:Engineering and Technology Edition
基金
国防基础科研基金项目(A2320060114)
哈尔滨市科技创新人才研究专项基金项目(2010B090400548)
关键词
流体传动与控制
直驱式容积控制
离散滑模控制
微分器
hydraulic transmission and control
direct drive volume control
discrete variable structure control
differentiator
