【正文】 P是壓電元件， R 是夾持環(huán)。圖 為環(huán)形剪切型，結構簡單，能做成極小型、高共振頻率的加速度計，環(huán)形質量塊粘到裝在中心支柱上的環(huán)形壓電元件上。螺栓不得全部擰入基座螺孔，以免引起基座 變形，影響加速度計的輸出。某種典型的加速度計采用上述各種固定方法的共振頻率分別約為：鋼螺栓固定法 31kHz，云母墊片 28kHz，涂簿蠟層 29kHz，手持法 2kHz，永久磁鐵固定法 7kHz。 壓電晶體加速度計的橫向靈敏度表示它對橫向（垂直于加速度計軸線）振動的敏感程度，橫向靈敏度常以主靈敏度（即加速度計的電壓靈敏度或電荷靈敏度）的百分比表示。電荷放大器 以電容作負反饋，使用中基本不受 電纜電容的影響。 概括起來，加速度傳感器可應用在控制，手柄振動和搖晃，儀器儀表，汽車制動啟動檢測，地震檢測，報警系統(tǒng)，玩具，結構物、環(huán)境監(jiān)視，工程測振、地質勘探、鐵 路、橋梁、大壩的振動測試與分析；鼠標，高層建筑結構動態(tài)特性和安全保衛(wèi)振動偵察上。所用電壓放大器就是高輸入阻抗的比例放大 器。一般來說，加速度計尺寸越大 ，其 固有頻率越低。此法也可使加速度計與試件絕緣。加速度計與試件的各種固定方法見 圖 。加速度計感受軸向振動時，壓 (a)中心安裝壓縮型 (b)環(huán)形剪切型 (c) 三角剪切型 圖 壓電式加速度計 電元件承 受切應力。經(jīng)過阻抗變換以后，方可用于一般的放大、檢測電路將信號輸給指示 儀表或記錄器。 The mouse, highrise building structure dynamic characteristics and security vibration on reconnaissance. Six, the piezoelectric acceleration sensor of practical application At present the latest IBM Thinkpad laptops in the builtin acceleration sensors, dynamic monitoring out to use notebook in the vibration, and according to the vibration data, the system will be intelligent choice closed or let it continue to run hard drive, so can the greatest degree of protection because, for example, the turbulence vibration work environment, or accidentally fell off the puter to do damage caused by the hard disk, the greatest degree of protection in the inside of the data. Another use is the currently used digital cameras and video cameras, also have add speed sensor, used to detect when shooting in the hand of the vibration, and according to the vibration, automatic regulation to focus the camera. Generally speaking, acceleration sensor can be used in the control, the handle vibration and shaking, instruments, the brake start testing, testing, earthquake warning system, toys, structures, environmental monitoring, engineering geological exploration, vibration measurement, railway, Bridges, DAMS vibration test and analysis。 畢業(yè)論文 (設計 )外文資料翻譯 學 院 ： 專 業(yè)： 電子信息工程 姓 名： 學 號： 07418502 外文出處： （用外文寫） 附 件： 外文資料翻譯譯文； 外文原文。 Additional charge, the drift integral leakage circuit (used for measuring vibration velocity and a move), the noise of the device is inevitable, so the actual low frequency end also appear cutoff frequency, about ~ 1 Hz ac or so. Five, the piezoelectric acceleration sensor of practical application At present the latest IBM Thinkpad laptops in the builtin acceleration sensors, dynamic monitoring out to use notebook in the vibration, and according to the vibration data, the system will be intelligent choice closed or let it continue to run hard drive, so can the greatest degree of protection because, for example, the turbulence vibration work environment, or accidentally fell off the puter to do damage caused by the hard disk, the greatest degree of protection in the inside of the data. Another use is the currently used digital cameras and video cameras, also have add speed s