Invention Grant
- Patent Title: Method of using feedforward compensation based on pressure feedback for controlling swash plate angle in a hydrostatic power unit of a continuously variable transmission
- Patent Title (中): 基于压力反馈的前馈补偿方法，用于控制无级变速器的静液力动力单元中的斜盘角度
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Application No.: US14239929Application Date: 2012-08-27
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Publication No.: US09550490B2Publication Date: 2017-01-24
- Inventor: Haibo Guo , Peter J. Dix , Garth H. Bulgrien , Brian A. Hartman , Robert C. Prasse , Cecil A. Weeramantry , Brian E. Felsing
- Applicant: Haibo Guo , Peter J. Dix , Garth H. Bulgrien , Brian A. Hartman , Robert C. Prasse , Cecil A. Weeramantry , Brian E. Felsing
- Applicant Address: US PA New Holland
- Assignee: CNH Industrial America LLC
- Current Assignee: CNH Industrial America LLC
- Current Assignee Address: US PA New Holland
- Agent Rickard K. DeMille; Rebecca L. Henkel
- International Application: PCT/US2012/052560 WO 20120827
- International Announcement: WO2013/029050 WO 20130228
- Main IPC: B60W10/30
- IPC: B60W10/30 ; B60W10/04 ; F16H61/431 ; F16H61/462 ; F16H59/68
Abstract:
A swash plate angle for a hydrostatic power unit of a continuously variable hydromechanical transmission is determined using a feedforward compensation term, to reduce reliance on closed loop control. The feedforward term is based on knowledge of the hydrostatic power unit determined as a function of knowledge of certain parameters, including, but not limited to, hydrostatic power unit pressure, swash plate angle, desired hydrostatic power unit ratio, and pump speed.
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