Invention Application
- Patent Title: RESPONSE OF AN UNDER-DAMPED SYSTEM
- Patent Title (中): 受阻系统的反应
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Application No.: US12968633Application Date: 2010-12-15
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Publication No.: US20110156763A1Publication Date: 2011-06-30
- Inventor: Sarah GAO , Jianhua ZHAO , Wadeo OU
- Applicant: Sarah GAO , Jianhua ZHAO , Wadeo OU
- Applicant Address: CN Shanghai
- Assignee: STMICROELECTRONICS R&D (SHANGHAI) CO., LTD.
- Current Assignee: STMICROELECTRONICS R&D (SHANGHAI) CO., LTD.
- Current Assignee Address: CN Shanghai
- Priority: CN200911000096.7 20091231
- Main IPC: H03B1/00
- IPC: H03B1/00

Abstract:
An embodiment of a circuit for driving an under-damped system comprises first and second signal generators. The first generator is operable to generate a first drive signal. And the second generator is operable to receive the first drive signal and a second drive signal, and to generate from the first and second drive signals a system drive signal having a first amplitude for a first duration and having a second amplitude after the first duration, the system drive signal operable to cause the under-damped system to operate in a substantially damped manner. Either or both of the first and second generators may be programmable such that one may adjust the response of any under-damped system by generating an appropriate drive signal instead of by physically modifying the system itself. In another embodiment, an under-damped system is caused to oscillate at a damped frequency having a first phase, and is also caused to oscillate at substantially the damped frequency having a second phase such that the oscillation at the first phase substantially cancels the oscillation at the second phase. Such embodiments may allow one to realize a faster settling time without slowing down the response time of an under-damped system.
Public/Granted literature
- US08570089B2 Improving the response of an under-damped system Public/Granted day:2013-10-29
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