摘 要:數(shù)控銑床控制系統(tǒng)的穩(wěn)定性、動(dòng)態(tài)性能和穩(wěn)態(tài)性能是影響加工精度的關(guān)鍵因素。本文對(duì)數(shù)控銑床的原光電跟蹤控制系統(tǒng)進(jìn)行了SIMULINK仿真分析計(jì)算,針對(duì)其性能上的不足,提出了基于PID校正的三種改進(jìn)方案,利用MATLAB建模進(jìn)行全數(shù)字的系統(tǒng)仿真。通過(guò)仿真結(jié)果的比較分析,提出合理的系統(tǒng)優(yōu)化方案,最終確定較好優(yōu)化參數(shù)K[sub]P[/sub]、T[sub]I[/sub]、T[sub]D[/sub],使控制系統(tǒng)性能得到提高。
關(guān)鍵詞:伺服系統(tǒng);系統(tǒng)模型;性能;系統(tǒng)仿真;優(yōu)化方案
Abstract: The stability, the dynamic and steady-state performances of the numerically-controlled system are the important factors, which affect the accuracy of the product. In this treatise, simulation of the initial photo-electronic tracking servo system shows the disadvantages in performance, and three kinds of optimization schemes based on PID controller are designed to improve the whole control system. After composing and simulating the three new models with MATLAB, the results of simulations are analyzed to decide the best optimization parameters for the enhancement of function.
Keywords: servo system, system model, performance, system simulation, optimization scheme
1 引言
數(shù)控銑床是集光學(xué)技術(shù)、激光技術(shù)、計(jì)算機(jī)技術(shù)、信息處理、控制技術(shù)等多學(xué)科技術(shù)為一體的現(xiàn)代化生產(chǎn)設(shè)備,現(xiàn)代控制理論與技術(shù)是其理論基礎(chǔ)和技術(shù)支撐。光電跟蹤伺服系統(tǒng)作為數(shù)控銑床控制系統(tǒng)的重要組成部分,其性能會(huì)直接影響到其工作性能和加工精度。隨著現(xiàn)代數(shù)控銑床不斷向著高速、高效率、高精度方向的發(fā)展,伺服系統(tǒng)的工作要求也越來(lái)越高。對(duì)現(xiàn)有的伺服系統(tǒng)進(jìn)行優(yōu)化設(shè)計(jì),能夠使之達(dá)到不斷提高的工作要求,同時(shí)也為同類控制系統(tǒng)的優(yōu)化方案選擇及參數(shù)調(diào)整提供了參考。
詳情請(qǐng)點(diǎn)擊:
數(shù)控銑床光電跟蹤伺服系統(tǒng)仿真及優(yōu)化研究