公开(公告)号：US20190135550A1

公开(公告)日：2019-05-09

申请号：US15804539

申请日：2017-11-06

Applicant: Caterpillar Inc.

Inventor： Lee M. Hogan ,  Timothy Michael O'Donnell ,  Daniel Podany

IPC: B65G43/00 ,  B65G23/00

Abstract: A control system for a conveyor system of a machine includes a motor to drive the conveyor system, and a pump operably coupled to the motor. A solenoid actuator actuates the pump. The control system includes operator interfaces to enable an operator to provide inputs indicative of a desired engine speed, and a desired conveyor speed. The control system includes a controller which determines a pump speed based on the desired engine speed, and determines a maximum possible motor speed based on the pump speed and a maximum possible gear ratio between the pump and the motor. The controller determines a desired motor speed based on the desired conveyor speed. The controller determines a solenoid actuation current based on the desired motor speed and the maximum possible motor speed, and supplies the solenoid actuation current to the solenoid actuator to control a speed of the conveyor system.