Control and Validation for Original-feeding System of Adf

【摘要】：An automatic document feeder (ADF) is an important part of a copier, which is capable of feeding a document for double-sided scanning, includes mechanical structure and control system. Control system is the core unit, which is responsible for original feeding, original separation, original registration, original conveyance, etc. Control system will directly affect the accuracy of machine efficiency. In order to design control system, mathematical model should be well-designed first. The original-feeding system of an ADF is controlled and validated in this paper. The ADF studied here is a prototype developed by Konica, a company that develops professional printing systems. We construct a model of original-feeding system for the ADF in Simulink, and software which is using for modeling dynamic system, simulating and analyzing, and express the PID gains. Next, we contrast original feed motor's speed on real condition to simulation results for checking whether the PID gains are reasonable. The comparison shows the upward trend in motor speed is similar, and the actual rise time is shorter. The reason for that is: the test data on real condition focus on the moment when the original feeds in, all the loads involved in simulation are not added to motion control system. In this sense, in addition to finding better PID gains in the ADF motion control system, our analysis also led to a better understanding of system.