【摘要】 针对目前自动控制理论实验教学中被控对象的传递函数缺少实际工程意义等问题,引入水箱作为工程实物被控对象,构建了可直接测量的双容水箱实验系统,设计了单容水箱传递函数的测定和单容水箱的电路模拟与对比分析等实验项目,通过机理法建立数学模型,实验法测定传递函数的参数,再搭建电路模拟水箱的特性,最后将两者阶跃响应进行对比和分析,实施了基于工程实物型被控对象的实验教学方法。该教学方法能够帮助学生深入理解传递函数的实际工程意义,掌握各类测试量的转换方法,获得性能指标的工程实际实感,增强学生的工程意识和设计、调试实物系统的综合实践能力。更多还原

【Abstract】 Aimed at the transfer function of controlled object lacking of practical engineering significance in the present experimental teaching of principle of automatic control, water tank is introduced as the engineering physical controlled object. The double-tank experimental system which can be directly measured is constructed, and experimental projects including transfer function determination of single-tank and circuit simulation and analysis of water tank are designed. Mechanism method is used to establish mathematical model, experimental method is used to determine the parameters of transfer function, circuit is constructed to simulate characteristics of the tank and the both step responses are compared and analyzed finally. This experimental teaching method based on the engineering physical controlled object is carried out. This method can help students deeply understand the practical engineering significance of transfer function, master the conversion methods of various test quantities, and obtain the engineering practical sense of performance indexes. students’ engineering consciousness and comprehensive practical ability of designing and debugging physical systems can be enhanced.更多还原