钢坯修磨机台车速度控制系统的研究

Research on Speed Control System of Carriage in Steel Billet Grinding Machine

在分析、比较钢坯修磨机台车多种控制回路的基础上,提出了基于流量匹配和出口节流的泵、阀复合马达进出口独立控制的回路,对该回路进行理论分析、数字仿真和实际应用。结果表明:采用新的回路和控制方法,可以克服传统压力匹配负载敏感控制制动过程中易造成马达吸空、压差损失大的缺点,且能避免在现有进出油口独立调节回路中需采用2个伺服或比例方向阀而造成成本高的问题。新的回路也可进一步应用于多执行器的系统,实现节能。

Based on the comparison and analysis of various control loops for the carriage in steel billet grinding machine, the loop was put forward, which was based on flux-matching and the inlet and exit independent control of exit-saving pumps, composite valve motor. The loop was theoretically analyzed, numerically simulated and practically applied. The results show that the adoption of the new loop principle and control method can overcome the deficiencies of motors easy absorption of air, the great loss of differential pressure and avoid the problem of high cost resulting from the need of two servo or proportional direction valves in the independent regulatory loop of oil inlet and exit in existence, in the process of sensitive control brake of conventional pressure matching load. The new loop theory can also be used further in the multi-actuator system and thus energy saving can be realized.