Method for multi-dimensional sensor dynamic test device based on stable-state sine excitation force
2011
The invention provides a method for a multi-dimensional sensor dynamic test device based on a stable-state sine excitation force. Known sine excitation force signals can recovered by a centrifugal force, which is generated by that a rotary motor drives an eccentric excitation block and the output shaft of the rotary motor to synchronously rotate, through adjusting the rotating speed of the rotary motor, the mass center position of the eccentric excitation block, and the mounting directions of the rotary motor and a to-be-measured force sensor in a process of loading a T-shaped rack and an L-shaped rack, and using a permanent magnet steel block to periodically excite a Hall sensor to output a pulse response signal, so as to realize the sine excitation force and the excitation force moment with continuously varied frequency and amplitude value in each dimension direction of the to-be-measured force sensor. By utilizing a physical method of the multi-dimensional sensor dynamic test device based on the stable-state sine excitation force, the sine excitation signals which are not influenced by an external environment and are foreseeable are generated, so as to realize the sine excitation force with stable amplitude, easiness for adjustment and continuously-varied frequency. The method is simple and convenient to operate, and the dynamic transmission property of the to-be-measured force sensor within an entire use frequency band range can be obtained.
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