锻压技术

油压机智能转速感应控制系统研究

英文标题：Research on control system of smart rotating speed sensing for hydraulic machine

作者：王全刚程良伦刘斯亮

单位：广东工业大学

分类号：

出版年,卷(期):页码：2015,40(1):76-80

摘要：

针对传统油压机普遍存在运行功率大于生产需求功率的现象，在工频状态下空载运行和无功运行对能源造成严重浪费，提出一种基于负荷极限控制的油压机电机智能转速感应控制方法，将基于PLC的PID控制策略运用到油压机电机变频调速中，克服了油压机作业循环的负载多变工况存在着的大惯性、高非线性、大滞后等不利因素。通过现场测试，节能效果达到25%，同时电机变频调速转速变化更加平滑迅速，提高了系统稳定性，满足了油压机变负载工况电机转速的实时调节要求。

For the common phenomenon of hydraulic machine that the running power in production is greater than its need and there is a serious waste of energy when running without load and reactive power during power frequency state, a control method of the speed intelligent sensing control for a hydraulic machine motor was proposed based on load limit control principle. When PID control strategy based on PLC was applied in the hydraulic machine motor frequency control, the large inertia, highly nonlinear, large delay and other unfavorable phenomenon existed in hydraulic machine operating cycle with varied load were overcome. The results of testing show that energy saving is up to 25%, and the rotating speed change of motor variable frequency is more smooth, which improves system stability and meets the requirements of real-time adjustment of hydraulic machines in changing load conditions.

基金项目：

2012年广东省产学研结合项目“大中型智能控制高效节能油压机床的研发及产业化”(20120980)

王全刚（1990-），男，硕士研究生

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