An error elimination algorithm of a pole-assignment self-tuner for step reference inputs

This paper proposes a modified version of pole assignment self-tuners for linear time-invariant systems subjected to unknown constant disturbances. It is shown that this version also has the local convergence property established by Goodwin and Sin(1981, 1984) which was developed for linear systems with no disturbances. Utilizing this property, an error elimination algorithm is developed for step references. The performance of this algorithm is demonstrated through a simulation and the result is compared with that of a conventional pole assignment self-tuner using an additional integral action.     

Anti-sway position control of an automated transfer crane based on neural network predictive PID controller

In this paper, we develop an anti-sway control in proposed techniques for an ATC system The developed algorithm is to build the optimal path of container motion and to calculate an anti-collision path for collision avoidance in its movement to the finial coordinate Moreover, in order to show the effectiveness in this research, we compared NNP PID controller to be tuning parameters of controller using NN with 2 DOF PID controller The simulation and experimental results show that the proposed control scheme guarantees performances, trolley position, sway angle and settling time in NNP PID controller than other controller As the results in this paper, the application of NNP PID controller is analyzed to have robustness about disturbance which is wind of fixed pattern in the yard. Accordingly, the proposed algorithm in this study can be readily used for industrial applications     

Tuner数字式测试系统的电路分析与故障诊断

从实际应用角度,简述了天津德力的DS7720i型Tuner测试仪的工作原理,总结了在长期大批量生产的系统维护中常见典型故障的诊断和排除方法,以提高仪器的使用效率和寿命。     

基于PCS7的化工反应釜仿真控制系统平台

对化工反应釜的控制过去都采用人工控制,随着自动化的发展,对化工反应釜逐渐实现了自动化控制。搭建的化工反应釜仿真控制系统平台主要涉及两方面的研究,一方面是反应釜的仿真对象数学模型的建立,另一方面是控制策略,对于仿真对象我们采用PCS7所自带的MPC控制器辨识出控制对象的传递函数模型,控制策略主要采用经典的PID控制方式。在生产过程中影响釜中聚合反应物的参数很多,如温度、压力、流量等,其中最重要的是反应器的控制温度,对此我们应用了比较典型实用的控制方式,例如比值控制、串级控制、分程控制,这些控制方式都以CFC(连续功能图)的形式实现。对于PID参数的整定我们采用PCS7自带的PID Tuner来获取比例、积分、微分参数,在控制系统性能的稳定性、快速性和精度上取得了不错的控制效果。     

基于HSP50110/210多制式通用解调器设计

文章在介绍HSP50110／210工作原理基础上给出了利用该芯片组和DSP处理器一起完成多制式数字化解调器的设计实例，并讨论了设计中所遇到问题的解决方法，试验表明该系统非常灵活，能实现可靠的解调。文中给出了实现参数配置、增益分配和克服假锁现象的关键技术。