Research on Intellectualization of Hierarchical Multi-Control Loop in Production Systems

1.提出了一种分层多回路工厂控制系统，该系统利用自适应控制和基于规则的控制对各回路的性能指标进行优化。提出了一种自适应控制方法，根据管理层的调度条件，将生产级的生产效率优化控制模式转换为成本优化控制模式，有效地改善了交货期的延迟性。提出了一种基于运行成本的自适应权值控制方法和基于调度的瓶颈作业权值自适应控制方法，并验证了两种方法的有效性。提出了一种根据下级电机PWM控制器的占空比来确定运行速度和加速度的方法。利用预先计算好的存储器占空比表，通过DSP控制器判断电机控制的占空比，结果表明该方法是非常有效的。提出了一种根据电机轴角速度和加速度改变控制方式的机械手变结构控制系统，该系统对提高高跟踪精度是非常有效的。

1. A hierarchical multi-loop factory control system which opitmizes performance indices at each loop by using adaptive and rule based control is proposed.2. Adaptive control to change control mode from productivity optimization to cost optimization at manufacturing level according to scheduling condition at management level is proposed and it is shown the proposed method is effective in improving the lateness to due dates.3. A adaptive control method to change a weight on running cost and scheduling one to change a weight on bottle neck operation in schedule are proposed and it is verified that both methods are effective.4. A method to determine operation speed and acceleration according to the duty rates of motor PWM controllers at lower level.5. A DSP controller to decide the duty rare of motor control based on a duty rate table in memory which are pre-calculated in advance shows that the method is very effective.6. A V.S.S. system of manipulator to change control mode according to motor axis angular velocity and acceleration is proposed and shows it is very effective to improve high tracking accuracy.