DIGITAL CONTROLLER

• Main Authors: ISOMURA, SHIGENORI, IIDA, HISASHI, KATO, TASUNORI, KONDO, TOSHIO, NAKABAYASHI, KATSUHIKO, KAWAI, KATSUHIKO
• Format: Patent
• Language: English; Korean
• Published: 15.04.1998
• Edition: 6
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

본 발명의 디지틀 제어장치는 이른바 현대제어의 개량에 관한 것이며, 특히 내연기관의 아이들 회전수 제어장치에 있어서 외부로부터의 부하가 변동하였을 경우의 목표회전수에의 수속속도를 대폭 향상시킨 것이다. 특히 상태변수의 값을 오우픈 루우프(open loop) 제어되고 있을때부터 역연산을 함에 따라서 초기값을 정확하게 정할 수 있다. A device for controlling the engine speed in idling of an internal combustion engine to which so-called ''modern control theory'' is applied, and is directed to improve drastically the converging speed to a target number of revolution. The present invention updates the values of state variables even in an open-loop control state, to calculate initial values at the time of shift to feedback control. When a change of state of an external load is detected, an integration value is corrected in a feed-forward manner before it is limited to a predetermined range integration value limiting means in accordance with such a change of state. The present invention divides dynamic model for a control system into a dead time portion and a portion after the dead time portion, and identifies the dynamic model by a discrete system for each of these portions to configurate it.