通過對研發(fā)一臺寬幅面彩色噴墨繪圖機需求的分析，提出了其噴頭小車的驅(qū)動設(shè)計方案。該方案是一個由LMD18245芯片控制的直流直線電機，直線型容柵位移傳感器以及數(shù)字PID控制算法構(gòu)成閉環(huán)控制系統(tǒng)。經(jīng)過詳細(xì)設(shè)計和仔細(xì)調(diào)試，實踐證明該方案完全成立，小車驅(qū)動的性能指標(biāo)完全達(dá)到要求。
關(guān)鍵詞：噴墨繪圖機；容柵傳感器；直線電機
【Abstract】This paper gives a drive design scheme of print head carriage by analyzing the need of a color wide format ink-jet plotter. The design is a closed loop control system that consists of a linear DC motor drived by LMD18245, a linear capacitive grid displacement
transducer and a digital PID controller. After detailed design and careful debug, test results prove the scheme is correct and doable and the performance satisfies all design requirements.
【Key words】Ink-jet plotter; Capacitive grid transducer; Linear motor