【摘要】 基于零磁通霍尔电流传感器的原理和特性,设计了一种以DSP为核心的数字驱动电路,着重介绍了其中的DSP处理电路和功率放大电路的结构和功能。通过分析稳态误差的与系统参数的关系,得出了放大电路增益越大稳态误差越小的结论。实验验证了该设计的可行性,实验数据表明该传感器系统具有良好的精度和线性度。更多还原

【Abstract】 Based on the principle and characteristics of zero-flux hall current sensor,a digital driver circuit cored on DSP was designed,and the emphasis was introduced to DSP processing circuit and power amplifier circuit.By analyzing the relation between the steady-state error and the system parameter,the conclusion shows that the larger the amplification of the amplifier circuit,the smaller the steady-state error is.The experimental results indicate the feasibility of the design,and the experimental data shows that the system of this sensor has advantages of precision and linearity.更多还原