本文针对一种DCS控制设备出现的控制命令及状态反馈异常,分析出原因为执行机构的选型及匹配问题导致命令偏差较大,且设备过行程造成执行机构及相关附件损坏,提出采用新的DCS控制算法将执行方式进行转换,有效解决了设备命令执行及反馈问题,提高了系统运行可靠性。 Aiming at a control command and status feedback abnormality appeared in a DCS control device, this paper analyzes the reasons that the command deviation is large due to the selection and matching of the actuator, and the damage to the actuator and the related accessories caused by the over-travel of the device, The DCS control algorithm transforms the execution mode, effectively solves the problem of device command execution and feedback, and improves the system operation reliability.