Delayless differentiation algorithm and its efficient implementation for motion control applications

被引：26
|
作者：
Väliviita, S [1 ]
Vainio, O
机构：
[1] Helsinki Univ Technol, Inst Intelligent Power Elect, FIN-02150 Espoo, Finland
[2] Tampere Univ Technol, Signal Proc Lab, FIN-33101 Tampere, Finland
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1999年 / 48卷 / 05期
关键词：
acceleration measurement; digital filters; prediction methods;
D O I：
10.1109/19.799655
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Acceleration feedback can improve the performance of motion control in motor drives. Acceleration control is, however, seldom implemented in practical drive systems due to the unsatisfactory results of most acceleration measurement methods, In this paper, we introduce an finite impulse response (FIR) filter-based algorithm which makes it possible to differentiate polynomial-like velocity signals with optimal white noise attenuation. The proposed filter does not delay the acceleration signal but, instead, the prediction step can be freely adjusted to compensate for various delays in the physical implementation. Our differentiator can be implemented recursively so that the amount of multiplications and additions required does not depend on the filter length. The performance of the new algorithm is evaluated by applying it to a simulated motion control application.
引用
收藏
页码：967 / 971
页数：5
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