CAJ | 학술논문

针对等温锻造中模锻液压机低速运行时液压系统泄漏影响模锻液压机稳定性的问题，运用AMESim和MATLAB/Simulink软件建立了考虑系统泄漏模型的模锻液压机极低速驱动液压控制系统的联合仿真模型，并通过实验验证了该仿真平台的有效性与精确性。分析了系统泄漏对低速性能的影响，提出了常规PID泄漏补偿控制方法和基于PID的复合泄漏补偿控制方法，并对两种方法的补偿效果作了比较。仿真结果表明基于PID的复合泄漏补偿控制方法效果更好，超调量降低至3．4％，最大系统稳态误差减小至0．686％。
침대등온단조중모단액압궤저속운행시액압계통설루영향모단액압궤은정성적문제，운용AMESim화MATLAB/Simulink연건건립료고필계통설루모형적모단액압궤겁저속구동액압공제계통적연합방진모형，병통과실험험증료해방진평태적유효성여정학성。분석료계통설루대저속성능적영향，제출료상규PID설루보상공제방법화기우PID적복합설루보상공제방법，병대량충방법적보상효과작료비교。방진결과표명기우PID적복합설루보상공제방법효과경호，초조량강저지3．4％，최대계통은태오차감소지0．686％。
Leakage of hydraulic system will affect the stability of die forging press under ultra-low velocity in the isothermal forging process .Aiming at this problem ,the co-simulation model considering the leakage of the system and hydraulic control system of the die forging press under ultra-low veloci-ty was established based on the AMESim and Matlab/Simulink software platform .And the availability and accuracy of the simulation model was proven by experiments .The effects of leakage on the ultra-low velocity performance of the system were analyzed ,and then the conventional PID leakage compen-sation control method and the compound compensation control strategy based on PID were proposed . And the validity of the two kind of methods of compensation was investigated .Simulation results show that the compound compensation control method based on PID is better than the conventional PID leakage compensation control scheme , the overshoot is reduced to 3 .4% ,and the maximum steady-state error of the system is decreased to 0 .686% .