公开(公告)号：US10371018B2

公开(公告)日：2019-08-06

申请号：US15468508

申请日：2017-03-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Klaus Pochner ,  Uwe Steinmann ,  Kea Hyuk Chang ,  Scott T Feldmann ,  Jon C Wasberg

IPC: F01L1/34 ,  F01L1/344 ,  F02D13/02 ,  F02D41/20 ,  F01L13/00 ,  F02D41/00

Abstract: A method, control system, and variable valve timing system are provided for controlling an actuator that can be switched into an on state and an off state with pulse width modulation. The systems and method include controls configured to determine an actual system parameter on a first time schedule and a desired system parameter on a second time schedule. On a third time schedule, a position error difference between the actual system parameter and the desired system parameter is determined. The third time schedule is configured to begin and to determine the position error difference each time that the actual system parameter is determined and each time that the desired system parameter is determined. A desired duty cycle is determined, and a duty cycle command is sent to a pulse width modulation output unit.