| 摘要 |
PURPOSE:To obtain the position detecting device which eliminates limitations on the moving speed and acceleration of an object to be measured and has improved performance. CONSTITUTION:In the sampling system position detecting device consisting of a repetitive cycle waveform generating means 12 which generates a repetitive cycle waveform in relation with the moving body 11 to be measured and a processing means 13 which samples the output waveform of the repetitive cycle waveform generating means as shown by (131), inputs the waveform by digitization (132), and performs data processing for detecting the position of the body to be measured, the processing means estimate the current position as shown by (134) by using last detection data and determines a current position on the basis of the estimated position. When the current position is determined, phases generated with plural repetitive cycle waveforms are used (133) in concrete and the current phase is estimated (134) from the last phase data; and the quantity of variation between the inputted current phase data is found (135) and the current position is determined (136) according to the sum of the variation quantity and last position. |
