The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2016
Filed:
Jul. 14, 2014
Huawei Technologies Co., Ltd., Shenzhen, CN;
Zhaozheng Hou, Shenzhen, CN;
Chao Jia, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A feedforward control method, which includes: determining, whether the input voltage rapidly changes or slowly changes; when the input voltage rapidly changes, determining, a first feedforward gain coefficient corresponding to the difference between a input voltage reference value and a first input voltage measurement value acquired by a high-speed low-precision analog-to-digital converter in a current sampling period; when the input voltage slowly changes, determining a second feedforward gain coefficient which is a ratio of the input voltage reference value to a second input voltage measurement value acquired by a low-speed high-precision analog-to-digital converter in the current sampling period; and using the first or the second feedforward gain coefficient as a feedforward gain coefficient of a current input voltage, multiplying the feedforward gain coefficient by an output value of a feedback loop of an output voltage, so as to control stable output of the output voltage.