Novel vibration measuring platform and testing arrangement based on zero accurate rigidity is theoretical

Abstract

The utility model provides a novel vibration measuring platform and testing arrangement based on zero accurate rigidity is theoretical, its upper portion regulating part, load transducer, upper portion extension spring, quality piece, lower part extension spring and lower part regulating part that includes base, longeron, crossbeam and set gradually is formed with the support combination of horizontal support quality piece respectively between four sides of four longerons and quality piece, and it satisfies including card internal connection spare, external connection spare, linear bearing, two adjusting bolt, carbon fiber slide bar and compression spring on the side, compression spring's precommpression volume lambda 0: (Imgfile='DDA0000693254230000011. TIF'wi='578'he='128' /) wherein, an is the equivalent length of internal connection spare, and b is the equivalent length of external connection spare, and L0 is compression spring's former length, and kv does upper portion extension spring's rigidity, kh is compression spring's rigidity. This novel practicality has measures accurately, with low costs and measure timely advantage, has solved the delay that traditional acceleration sensor measuring vibrations faces, accumulated error and installation environment shortcoming such as expect much. 本实用新型提供了一种基于准零刚度理论的新型振动测量平台及测试装置，其包括底座、纵梁、横梁及依次设置的上部调节件、载荷传感器、上部拉伸弹簧、质量块、下部拉伸弹簧及下部调节件，四根纵梁与质量块的四侧面之间分别形成有水平支撑质量块的支撑组合，其包括卡于侧面上的内部连接件、外部连接件、线性轴承、两个调节螺栓、碳纤维滑杆及压缩弹簧，压缩弹簧的预压缩量λ0满足：其中，a为内部连接件的等效长度，b为外部连接件的等效长度，L0为压缩弹簧的原长，Kv为所述上部拉伸弹簧的刚度，Kh为压缩弹簧的刚度。本新型实用具有测量准确，成本低以及测量及时的优点，解决了传统加速度传感器测量振动面临的时间延迟，积累误差及安装环境要求高等缺点。