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1. 发明授权

US07651427B2 Electro-hydraulic control system with multiplexed pressure switch diagnostic system 有权
标题翻译：电液控制系统采用多路压力开关诊断系统
公开(公告)号：US07651427B2
公开(公告)日：2010-01-26
申请号：US11626524
申请日：2007-01-24
申请人： Charles F. Long , Bryan H. Hagelskamp
发明人： Charles F. Long , Bryan H. Hagelskamp
IPC分类号： F16H31/00
CPC分类号： F16H61/12 , F16H59/68 , F16H61/684 , F16H2059/683 , F16H2061/1208
摘要： An electro-hydraulic control system is provided with a diagnostic system that uses extensive multiplexing of pressure switches to reduce the number of required components. The control system includes a controller with a pressure switch diagnostic system having first, second, third and fourth pressure switches each having a high and a low logic state, first and second logic valves each movable between a respective first position and second position, and first, second, third and fourth trim valves each movable between a respective first position and second position. The pressure switches are multiplexed to report one of the high and low logic state to the controller in accordance with a relatively high and low fluid pressure, respectively, at different ones of the trim valves and logic valves, thereby enabling a determination of a change in or failure to change position of the respective the trim valves or logic valves.
摘要翻译：电液控制系统设有诊断系统，该诊断系统使用压力开关的大量复用来减少所需部件的数量。控制系统包括具有压力开关诊断系统的控制器，压力开关诊断系统具有分别具有高和低逻辑状态的第一，第二，第三和第四压力开关，第一和第二逻辑阀，每个可在相应的第一位置和第二位置之间移动，每个可在相应的第一位置和第二位置之间移动的第二，第三和第四调节阀。按照分别在不同的调节阀和逻辑阀上的相对较高和较低的流体压力，压力开关被复用以向控制器报告高逻辑状态和低逻辑状态之一，由此能够确定或者不能改变相应的调节阀或逻辑阀的位置。

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