Microelectronics, Volume. 51, Issue 1, 47(2021)

A Fast Compensation Driving Method of the Second Order Load with Small Damping Coefficient

PAN Gao and ZHANG Bo
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  • [in Chinese]
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    A fast compensation driving method of the second order load with small damping coefficient was presented. According to the transfer function of the second order system, the driving signal of the second order load with small damping coefficient was transformed, and the positive and negative step response with the same damping oscillation period were added with different time to compensate the damping oscillation amplitude of a single step response, so as to achieve the fast and stable driving response of the second order load with small damping coefficient. Applied in this compensation driving method, an open loop controlled voice coil motor driver chip was designed and tape-out in a 0.18 μm CMOS technology. The results showed that the displacement amplitude of voice coil motor corresponding to the optimal driving current was only 0.925%, and the establishment time was only 7.8 ms under the condition of the resonant period of 10 ms.

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    PAN Gao, ZHANG Bo. A Fast Compensation Driving Method of the Second Order Load with Small Damping Coefficient[J]. Microelectronics, 2021, 51(1): 47

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    Paper Information

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    Received: Feb. 5, 2020

    Accepted: --

    Published Online: Mar. 11, 2022

    The Author Email:

    DOI:10.13911/j.cnki.1004-3365.200066

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