基于IRT自适应评测系统的高等数学精准教学模式研究

以项目反应理论为基础,构建高等数学课程自适应评测系统,有效避免抄袭和误差对学生日常评测结果的影响,真实反映学生的学习效果。基于IRT自适应评测系统的高等数学精准教学模式研究显示,评测系统可实现实时评测并输出结果,为教师及时提供给学生有效学习策略提供依据,助力学生学习效率的提高。基于IRT自适应评价系统的精准教学模式使高等数学的精准教学成为可能。

Adaptive Observer-Based Fault Estimate for Nonlinear Systems

An approach for adaptive observer-based fault estimate for nonlinear system is proposed.H-infinity theory is applied to analyzing the design method and stable conditions of the adaptive observer, from which both system state and fault can be estimated. It is proved that the fault estimate error is related to the given H-infinity track performance indexes,as well as to the changing rate of the fault and the Lipschitz constant of the nonlinear item.The design steps of the adaptive observer are proposed.The simulation results show that the observer has good performance for fault estimate even when the system includes nonlinear terms, which confirms the effectiveness of the method.