@article{oai:yamagata.repo.nii.ac.jp:00000686,
 author = {大内,  隆夫 and 福寿,  三典 and 鈴木,  春男},
 issue = {1},
 journal = {山形大学紀要.工学},
 month = {Jan},
 note = {論文(Article), If the first-order system approximation is made in the transfer function of DC motor, the response time of DC motor is obtained from the time constant of this function. Since the engineering of the dividing into equal parts with a high-degree of accuracy has developed, the photoelectric pickups which generate 6000 pulses for one revolution have been on the market it is also possible to make the repeated frequency high at very low rotating speed.　The square wave with repeated frequency which is in proportion to rotating speed is generated by using those photoelectric pickups. This paper describes on circuit forms of measuring the response time of DC motor by means of detecting the difference between reference pulse width and this square wave pulse width in case that the rotating speed increases. This method has a merit that it can measure with no contact to DC motor, and it is possible to make the sensitivity of measurement high at very low rotating speed if the number of dividing into equal parts increases.},
 pages = {149--165},
 title = {光電的方法による直流電動機の応答時間測定},
 volume = {10},
 year = {1968}
}