电磁自动平衡式智能测力仪
DEVELOPMENT OF A INTELLIGENT FORCE METER BY AUTOMATIC ELECTRO-MAGNETIC BALANCING
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摘要: 在表面减阻试验测量中,测力方式有多种多样[1],但是,由于它们测力的基本原理是测量在力作用下使弹性元件产生的位移,这将影响测量摩擦阻力的精度。Abstract: In wind tunnel measurement of surface drag a force meter with high sensitivity and accuracy is urgently needed.This paper reports the development of the automatically balancing force meter which is a new device not yet seen before.The design principle,software and hardware,and the application of this meter are presented in this paper.Its accuracy is 0 5%,repetition 0.1%,responce time 5ms,sampling period 100μs.
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