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研究了一类控制系数未知的非线性参数化系统的输出反馈实际跟踪控制问题。通过引入适当的坐标变换,将原始系统转换成不带有控制系数的新系统。为新系统设计了合理的高增益观测器,进而利用反推技术,设计了输出反馈跟踪控制器。仿真结果表明,通过选择合适的设计参数,所设计的输出反馈跟踪控制器可以保证系统所有的状态全局有界,并且当时间足够大时,跟踪误差收敛到零点的既定小领域内。
The problem of output tracking control for a class of nonlinear parameterized systems with unknown control coefficients is studied. By introducing the appropriate coordinate transformation, the original system is transformed into a new system without control coefficients. For the new system, a reasonable high-gain observer is designed, and then the output feedback tracking controller is designed by using the backstepping technology. The simulation results show that the output feedback tracking controller can ensure that the state of the system is globally bounded by selecting the appropriate design parameters, and when the time is large enough, the tracking error converges to the established small area of zero.