Invention Grant
- Patent Title: Control systems and methods for preventing low vehicle speed
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Application No.: US15459486Application Date: 2017-03-15
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Publication No.: US10259341B2Publication Date: 2019-04-16
- Inventor: Love Lor , Adam J. Heisel
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Main IPC: B60L15/20
- IPC: B60L15/20 ; H02P27/06 ; B60W30/18

Abstract:
A road load module is configured to determine a road load torque to maintain zero vehicle acceleration. A closed loop (CL) module is configured to determine a CL torque based on a difference between a target vehicle speed and a vehicle speed. A motor torque module is configured to: produce a limited CL torque by limiting the CL torque to a predetermined torque limit when a magnitude of the CL torque is greater than a magnitude of the predetermined torque limit; when the vehicle speed is within a predetermined low speed range and a magnitude of the road load torque is greater than or less than a magnitude of a predetermined maximum torque, adjust the predetermined torque limit; and determine a motor torque command based on the limited CL torque and a motor torque request determined based on a position of an accelerator pedal.
Public/Granted literature
- US20180264970A1 CONTROL SYSTEMS AND METHODS FOR PREVENTING LOW VEHICLE SPEED Public/Granted day:2018-09-20
Information query
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