矿井提升机恒减速电液制动系统仿真分析

Simulation and analysis on constant deceleration electro-hydraulic braking system of mine hoist

建立了矿井提升机恒减速电液制动系统 AMESim/Simulink 联合仿真模型,对恒减速安全制动进行仿真分析。在相同的 PID 参数条件下,模拟重载上提工况与重载下放工况得到的制动效果有明显差异,重载下放的制动比重载上提的制动响应慢;制动效果跟减速度的设定有关;增大比例环节可以加快系统响应速度,但比例环节过大也可能造成重载上提工况下加速度的超调。在实际系统应用中,可以通过减小闸盘间隙、优化制动器结构来提高制动系统响应。

The AMESim/Simulink joint simulation model of the constant deceleration electro-hydraulic braking system of the mine hoist was established,and constant deceleration security braking was simulated and analyzed.At the same PID parameters,heavy-load hoisting mode and heavy-load lowering mode were simulated,and obvious braking effects were obtained.The braking response of the heavy-load lowering mode was slower than that of the heavy-load hoisting mode;the braking effects were related to the set deceleration;the increase in the proportion loop quickened the system response velocity,while the oversized proportion loop was possible to produce the overshoot of acceleration in heavy-load hoisting mode.In actual application,the response of the braking system could be enhanced by reducing the gap of braking discs and optimizing the structure of the brake.