Invention Grant
US07992850B2 System and method for controlling electromagnet lift power for material handlers
有权
用于控制材料处理机的电磁铁电力的系统和方法
- Patent Title: System and method for controlling electromagnet lift power for material handlers
- Patent Title (中): 用于控制材料处理机的电磁铁电力的系统和方法
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Application No.: US11729440Application Date: 2007-03-29
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Publication No.: US07992850B2Publication Date: 2011-08-09
- Inventor: Xiaojun Zhang , Timothy Lynn Cooper , James Ivan Portscheller
- Applicant: Xiaojun Zhang , Timothy Lynn Cooper , James Ivan Portscheller
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- Main IPC: B25B1/00
- IPC: B25B1/00

Abstract:
A method for operating an electromagnetic lift that includes a generator-driven electromagnet comprises adjusting a position of the electromagnet, in response to a first position command. Upon receiving a lift command, an output power level of a generator is established at a predetermined level above a predefined normal power level. In response to an excess release command, the output power level is set to a first predetermined level below the normal power level. In response to a transport command, the output power level is established as approximately the normal power level. Upon receiving a release command, the output power level is established at a second predetermined level below the normal power level.
Public/Granted literature
- US20080239612A1 System and method for controlling electromagnet lift power for material handlers Public/Granted day:2008-10-02
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