抄録
With using the transfer matrix method, a dynamic analysis of the automatic draft control system with hydraulically controlled three-point linkage (Frguson system) was done by auther.
Transfer matrixes of the mechaical elements represented with force-displacement mobilities easily introduced the control equation of the system. To prevent “hunting” of the system and to stabilize the draft and the tillage depth, frequency and inditial responses were studied and numerical examples were shown.
