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style="font-size:14px;">应变式动态力传感器即<b><a href="http://haimiaosong.net/" target="_blank" style="font-weight:bold">测力传感å™?/a></b></span></b><span style="font-size:14px;">是将冲击过程的弹性变形转换成应变电阻的变化,通过惠斯通桥路、放大调理电路将变化转换为测量电路可识别的信号ã€?/span><br /> <br /> <span style="font-size:14px;"> 压电式动态力传感器:压电材料在冲击过程晶体表面产生正负电荷,电荷量与受动态力大小成正比,电荷通过外置的电荷放大电路转换为后端采集电路可识别的电压,压电式动态力传感器是依据压电效应设计的ã€?/span>   </p> <p> <span style="font-size:14px;">由于采用压电陶瓷、压电石英材料,压电动态力传感器的刚度更大,结构更小,并且拥有更高的固有频率,适合动态测量。采用压电传感器测量时,压电材料产生电信号,但几乎不产生位移。压电传感器的灵敏度不依赖尺寸和压电材料结构,而是依赖使用的压电材料类型和几何形状ã€?/span><br /> <br /> <span style="font-size:14px;"> 实际应用过程的选择</span> </p> <p> <span style="font-size:14px;">在力加载过程中,压电传感器只有非常小的变形,具有极高的刚度。使其具有很高的谐振频率,非常适合用于动态测试。但是,完整的测量链对于动态特性是非常关键的。因此,安装传感器的部件需要有更大的质量,并且其对系统的整体质量和截止频率具有一个较大的冲击,避免附加质量引起结构振动、冲击形态的变化。另外,电荷放大器的带宽取决于电荷,因此,在进行较大的力测量导致的高电荷反过来会限制带宽ã€?/span><br /> <br /> <span style="font-size:14px;"> 在较大额定力情况下,应变传感器具有更高的截止频率。小量程的力传感器的弹性体更软,结构刚度小ï¼?谐振频率也就更低。但是,进行小量程力进行快速测试时,可以选择压电力传感器,而对于较大的力是,应该选择应变原理的传感器ã€?/span><br /> <br /> <b><u><span style="font-size:14px;"><a href="http://haimiaosong.net/supply/" target="_blank">动态力测力传感å™?/a></span></u></b><br /> <br /> <span style="font-size:14px;"> 标定任务</span><br /> <span style="font-size:14px;"> 连接应变传感器的放大器可以进行多种误差补偿。包括温度对灵敏度和零点的补偿以及线性和弯矩误差等ã€?因此,应变传感器非常适合高精度静态标定, 通过弹性体结构可以实现更高的可重复性。因此,对于力学标定来说,需要选择基于应变原理的传感器。压电式力传感器在安装过程采用螺栓安装,实际产生动态力时螺栓会分流动态力,用户在实际使用时不能使用传感器厂家提供的出场参数,需与结构件安装后整体标定,标定一般采用冲击加速度法和应变等效冲击法ã€?/span><br /> <br /> <span style="font-size:14px;"> 高初始负è½?/span><br /> <span style="font-size:14px;"> 在力施加过程中,如果需要,压电传感器产生的电荷可以短路。电荷放大器输入状态可以显示为零。因此,电荷放大器的输入范围可以不受高初始负载影响。因此,压电传感器可以在高初始负载状态下维持高精度ã€?/span><br /> <br /> <span style="font-size:14px;"> 在恶劣环境下</span><br /> <span style="font-size:14px;"> 一些应变力传感器具有IP68保护等级。紧致密封的外壳保护灵敏的应变片。这让其可以用于恶劣的环境中。压电传感器的电缆可以采用特殊的防护来保证其连接,来保证其操作安全性ã€?/span><br /> <br /> <span style="font-size:14px;"> 高精度测é‡?/span><br /> <span style="font-size:14px;"> 现代力传感器都具有很高的精度,应变传感器的误差仅æœ?00 ppm。压电传感器具有稍高的线性误差,一般为满量程的0.5%。其限制主要来自于漂移,通过对整个量程的标定,可以使其获得更高的精度ã€?/span><br /> <br /> <span style="font-size:14px;"> 空间受到限制</span><br /> <span style="font-size:14px;"> 压电传感器结构非常紧凑,例如CLP系列高度仅有4 mm。因此非常适合集成到现存系统中。尽管其精度比较低,但是在空间要求较高的应用中,可以考虑选择压电传感器ã€?/span> </p> <p> <span style="font-size:14px;"><br /> </span> </p> <p> <span style="font-size:14px;"></span> </p> <hr /> <p> <span><span style="color:#333333;"><br /> </span></span> </p> <ul> <li> <span><span style="color:#333333;"><a href="http://haimiaosong.net/" target="_blank">深圳市力准传感技术有限公å?/a>是专业生产高品质、高精度测力传感器厂家。主要产品有微型拉压力传感器、拉杆式拉压传感器、S型拉压力传感器、环形传感器、柱式传感器、轴销类传感器、称重类传感器、多轴力传感器、扭矩传感器ã€?a href="http://haimiaosong.net/wxwycgq/" target="_blank">微型位移传感å™?/a>、压力变送器(液压传感器)、变送器/放大器、控制仪表、以及手持仪等力控产品达百余种,并已获得多项国家专利ï¼?/span><br /> </span> </li> <li> <span><span style="color:#333333;">产品广泛应用äº?0多种新型和智能化高端领域,包括工业自动化生产线ã€?C、新能源、机器人、机械制造、医疗、纺织、汽车、冶金以及交通等领域ï¼?/span><br /> 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