| 摘要 |
PURPOSE:To check any influence attributable to speed variations in a crankshaft as well as to improve the responsive speed of control, by finding a differential compensation value in accordance with a difference between a speed signal prior to two turns of the crankshaft and a speed signal at a certain point of time. CONSTITUTION:This controllr is provided with two elements, that is, a speed detection circuit 20 which finds the time required for one rotation of the crankshaft of an engine 10, namely, a counting value serving as a speed signal out of a period and a differential operation part 30 which finds a difference in a calculating value between a certain period and such a period as prior to two cycles, namely, a differential compensation value D on the basis of a difference in engine speeds. Also it is provided with an error operation part 50 calculating an error Y between the actual revolving speed and the desired speed. And, this controller is constituted so as to perform the following functions that it adds a proportional compensation value P made up of multiplying the said error Y by a coefficient K2 with a multiplier 62 to the said differential compensation alue D with an adder 80 and further transmits the value given by adding an integral compensation value I at an integral operation part 70 with an adder 82 to a throttle control part 90 to control the opening of a throttle valve 14. |
