High-precision electric automobile suspension stiffness measuring transducer
A technology for measuring sensors and electric vehicles, used in suspension, elastic suspension, vehicle components, etc., can solve the problems of poor matching, complex sensor structure, low measurement accuracy, etc., to achieve high measurement accuracy, compact structure, weight light effect
Active Publication Date: 2017-12-19
重庆国贵赛车科技股份有限公司
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Problems solved by technology
[0003] In order to meet the needs of electric vehicles, the current automobile suspension gradually adopts the active suspension system, that is, the vibration between the road surface and the wheel is monitored in real time, so as to actively adjust the stiffness of the coil spring or the damping characteristics of the shock absorber, but the current measurement of the suspension The structure of the stiffness sensor is relatively complex, and it is not specially designed for the coil spring, the matching degree is not good, and the measurement accuracy is low
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[0013] Such as Figure 1-Figure 3 The shown high-precision electric vehicle suspension stiffness measurement sensor includes a DNA-type double helix structure formed by two helical generator coils 31 coiled with each other; along the axial direction of the generator coil 31, it is arranged Multiple groups of generating units, each group of generating units includes two coaxially arranged permanent magnets 32, the axial direction of the permanent magnets 32 is perpendicular to the axial direction of the generating coil 31, and the outer ends of the two permanent magnets 32 are respectively insulated from a generating coil 31 connected, the inner ends of the two permanent magnets 32 approach each other and leave a certain gap, and the polarities of the inner ends of the two permanent magnets 32 are oppositely set; the inner ends of the two permanent magnets 32 are sleeved in the guide sleeve 33, so that the permanent The inner end of the magnet 32 can slide along the axial dir...
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The invention particularly relates to a high-precision electric automobile suspension stiffness measuring transducer. The high-precision electric automobile suspension stiffness measuring transducer is compact in structure and high in measuring precision. The transducer comprises a DNA type double helix structure which is formed by mutual spiraling of two spiral-shaped generating coils. A plurality of sets of generating units are arranged between the two generating coils, and each set of generating units comprises two permanent magnets. The outer ends of the two permanent magnets are in insulating connection with one generating coil, the inner ends of the two permanent magnets are close to each other and a certain gap is left, and the polarity of the inner ends of the two permanent magnets is arranged to be reverse mutually. The inner ends of the two permanent magnets are arranged in guide sleeves in a sleeved mode. When a spiral spring vibrates, the length of each generating coil does not change, and the vibration is filtered automatically. When one section of the spiral spring deforms, it can be regarded as that the shape of a section of arc line in the space changes, precise corresponding to such a minimal change can be conducted through the length changes of the wound generating coils, so that the measuring precision is high. The transducer is wound on the spiral spring, so that the structure is compact.
Description
technical field [0001] The invention relates to the technical field of automobile suspension, in particular to a high-precision electric automobile suspension stiffness measurement sensor. Background technique [0002] In the independent suspension system of a car, in order to counteract the vibration and shock in the vertical direction and transfer the weight of the vehicle body to the axle, the spring and the shock absorber are usually used together. The spring can transmit the vertical force and delay the shock. The shock absorber can absorb impact energy, thereby attenuating vibration. Most of the springs currently used are coil springs or air springs. The advantages of coil springs are simple structure and low price, so coil springs are used as elastic components in most cars. [0003] In order to meet the needs of electric vehicles, the current automobile suspension gradually adopts the active suspension system, that is, the vibration between the road surface and the w...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60G17/019
CPCB60G17/019B60G2401/17
Inventor 陈子龙
Owner 重庆国贵赛车科技股份有限公司