| 摘要 |
<p>PURPOSE: To always stably performing transport and travel of a belt, in always adequately maintaining the belt biasing control operation, regardless of an external condition change giving effect of the belt biasing control, by providing respectively specific control means, state quantity detection means, regulation means and calculation means. CONSTITUTION: The belt biasing control means controls the belt biasing in the direction orthogonal to the moving direction so as to align the position of the belt driven to move in the direction orthogonal to the moving direction, a state quantity detection means detects or inputs the state quantity in connection with the biasing control by the biasing control means. Namely, a control circuit 100 controls a motor 5 of a displacing mechanism 80 of a tension roller 8 rotated in a forward or a backward direction based on the belt biasing position information detected and inputted by belt biasing position detection means. A regulation means relates the state quantity with the manipulated variable at the time of performing the biasing control by the biasing control means as a nonlinear regulation. A calculation means calculates the manipulated variable according to the regulation outputted from the regulation means.</p> |
