近年來材料噴塗成型技術以使用多樣化的材料為發展趨勢，對於不同性質的材料，一種壓電驅動波形將無法適用，將需要重新設定。由於驅動波形直接影響噴出液滴的好壞，而液滴的型態決定物件成型的完整性與精度。因此本研究針對波形參數的調整，發展一套波形設計方法，快速針對不同材料性質的應用去設計波形，且能夠噴出良好的液滴型態。
因應噴印圖形之噴墨量需求，定義三脈衝波形的各項參數如：驅動電壓、停留時間、間隔時間等，分析其對液滴飛行速度、體積的影響。主要以高速攝影機搭建觀墨系統，實際觀測調整參數後的噴墨現象，以液滴飛行速度與衛星液滴為實驗指標，調校最佳波形參數，以及訂定波形設計的流程。此設計方法將套用不同性質的材料做驗證，並探討單層列印時液滴的尺寸與厚度，回饋製程參數如層厚與位移填補的設計。實驗結果顯示，液滴的飛行速度的影響因子，為填充時間與停留時間，兩者合併的脈衝寬度將有一定值，使飛行速度最大化。而液滴體積依據脈衝個數的多寡而定，近乎以倍數成長，且使的液滴落在基質上的攤平直徑以線性增加。依據本研究歸納的波形設計方法，以單脈衝為基礎，延伸至三脈衝波形，可噴出三種不同尺寸的液滴，且只需調整特定參數，即可快速完成該材料可用的波形。且透過波形設計，可提供列印製程參數的設定，達成所需的精度要求。

Recently, using a variety of materials is the development trend of the material jetting technology. But the same piezoelectric drive waveform will not be applicable for different property of photopolymer resin. As the waveform directly affects the droplet performance which determines the quality and accuracy of printing object. Therefore, this study developed a waveform design method by adjusting waveform parameters to rapidly apply various materials to the printing process.
For gray level printing, the triple-pulse parameters such as voltage, hold time and separating time were defined and analyzed their effect on droplet velocity. An observation system with a high-speed camera could actually observe the material ejection after the parameters adjustment. The jetting drop without satellite is the target for the optimal waveform. Exploring the size and thickness of droplets when printed on one layer to feedback the process parameters such as layer height and printhead shift. As result, the droplet velocity is affected by fill time and hold time. Under the fixed pulse width, it jets droplet with maximum velocity. As the number of pulses increased, the droplet volume almost linearly grows, and its spreading diameter raise on based material. In the end, this design method will be applied to the other material to verify its feasibility. The design waveform base on single-pulse extending to triple-pulse, that can eject three different sizes of droplets. Through the waveform design, only a few parameters tuned, can provide the user setting the printing process to achieve the requirements of the accuracy.

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