| 摘要 |
PURPOSE:To obtain the characteristics approximate to the speed-to-torque characteristics of an engine easily and to perform accurate testing without using any engine by controlling the speed output of a dynamometer with a controlling amplifier and supplying the same again to the dynamometer. CONSTITUTION:A controlling amplifier CAM detects the speed of a dynamometer DY1, transmits a torque command as its output and supplies the same to the dynamometer DY1. Rotating speeds are set at N1, N2 by the 1st, 2nd rotating speed setters 14, 18, and when the dynamometer DY1 is started, the driving force is transmitted to a transmission TM. When the rotating speed N exceeds the N1, a rotating speed signal is inputted to the input of an amplifier 16, and is added together with the inputs of the angles by a slot opening setter 26 and the 1st setter 19, the output whereof is inputted to the dynamometer DY1. When the rotating speed attains the N2, the value set in the 1st setter 19 is transmitted to the output of the amplifier 16, and is changed of polarities with an amplifier 22, the output whereof is applied to the 2nd setter 23. The output of an amplifier 25 is applied to the dynamometer DY1, whereby it is controlled. |
