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Abstract: Under
the condition of CAT (Computer aided test), the test data about
electro-hydraulic servo valve frequency response characteristic is
processed with the discrete way. The disposal brings some errors to the
test results. The magnitude of error is connected with the degree of
discreteness. By analyzing the data’s relation between the degree of
discrete and the magnitude of error in detail , some methods how to
increase the test precision of servo valve frequency response
characteristic are given, and the theory analyses in this article are
verified by the tests.
Key
words: Servo
valve Phase frequency characteristics CAT Data process
Error analysis
CLC No: TH137.52
Received 20040219, received in
revised form 20040820
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