| 摘要 |
PURPOSE:To precisely and stably find frequency characteristics by using uncontinuous sine wave sweeping waveforms to adjust the amplitude of a command so that constant response amplitude is obtained in every frequency point. CONSTITUTION:An initial input compensation amount is operated 55 by transmission characteristics from a mathematic mode) 35 and a command waveform is found 75, 70 and supplied to a control system 100. The percentage of amplitude focusing is found 15, the focusing is discriminated 20 and, if the amplitude is not focused, a result transmission characteristic is found 25 and smoothed 30 and the succeeding input compensation amount is found on the basis of said transmission characteristic and applied as a command waveform 70. The series processing is repeated until the amplitude is focused to the objective value. At the time of focusing, the result transmission characteristic at a corresponding frequency is stored 45 and an initial command waveform 55 is found to transfer to the succeeding frequency and a sampling pitch is culculated 60, 65 and applied to a high speed analog output device 6 and a sampling pitch switching device 7 to continuously find the frequency characteristics of a prescribed band. |
