Research on the current sampling precision in the electric quantity gauge;

And the problem of current sampling was stressed in the software.

Considering the discrete sampling character of the digital system,the current sampling point was regulated according to the duty ration for each switching period in order to make better sampling precision.

Research on sampling circuit of dynamic weighing system about wheel loader

By using an electric current sensor named CSK7-5A and an A/D converter named AD7705,the embedded array blocks of FLEX10K10 were selected as buffers,and the control module FIFO1 of changed A/D data entering buffers was designed to complecte a sampling circuit.

After summarizing the collectivity constitutes of this system, the writer puts stress on the polar coordinates sampling circuit, coordinates transformation and software, and simply puts forward its applications.

According to the characteristics of the BOOST converter, this paper presented a novel current sensing circuit.

A current sensing circuit for power management IC is proposed,using high voltage power devices.

According to application requirement of portable electronic devices, through system design, circuit design and performance simulation, a peak current-mode synchronous Rectification buck DC-DC converter with current sensing technology on chip is realized in this thesis.