| 摘要 |
PURPOSE:To retrieve the correction position of a body to be tested easily and accurately by starting detecting the rotary phase of a drivng motor on detecting the reference mark of the body to be tested after unbalance is measured and displayed, and driving an unbalance angle display meter with the output of a comparing circuit which compares the output of an encoder output correcting circuit with the measurement result of an unbalance angle. CONSTITUTION:The unbalance angle theta0 of the body W to be tested is displayed on the unbalance angle indication meter 11 when a test is completed. Then, when the body W to be tested is rotated by a hand or motor, the indication meter 11 is driven with the output of the comparing circuit 15 once a photocell 6 detects the reference mark M, so theta0-theta obtained by subtracting an angle theta of rotation from the reference mark M of the body W to be tested from said point of time is displayed on the indication meter 11. Therefore, the body W to be tested is rotated after the unbalance measured and displayed and then stopped where the unbalance indication meter 11 indicates 0; the unbalance position of the body W to be tested, i.e. place where a correction is made is set, for example, right above. |
