采样电阻

采用外接输出采样电阻的方式，实现输出电压的可编程。芯片内设过热保护和欠压保护，以实现电路的可靠性操作。

The sensor resistor is externally connected , which realize output voltage programmable .

选择采样电阻，既要信噪比好，又要避免产生过大的测量信号。

Sampling resistance is both the signal to noise ratio to be good and avoiding to produce the oversized survey signal .

电子束焊机加速电源中由于高压变压器杂散电容的耦合作用，在束流采样电阻上产生较大的干扰信号，从而给焊机运行带来不利影响。

Coupling of mixed capacitor in high-voltage transformer may produce disturbance signal in beam current sampling resistance , and it will effect the welding machine .

此技术精度更高，使用器件更少，重量更轻，避免了采样电阻的能量损耗。

This technique , higher accuracy , the use of fewer components , lighter in weight , avoid the energy loss of the sampling resistor .

噪声试验中，通过变换回路采样电阻值的大小来验证阻值不同对输出的影响。

In the noise testing , we changed the value of the sampling resistor of the closed-loop to observe its influence on the output noise level .

为了保证电路正常工作，还推荐了一种该芯片的外围电路（包括采样电阻及功率管）。

In order to ensure the circuit to work , the paper also recommended a peripheral circuits of the chip ( including the sample resistance and power management ) .

通过分析该电路的系统误差得出影响电流源输出精度的最关键的环节，分别是基准电压、采样电阻和运算放大器，并提出了抑制系统误差的方法和措施。

Through analyzing systematic error of the circuit system , it is obtained that voltage reference , sampling resistance , operational amplifier affect the output precision of current source mostly .

自积分式罗果夫斯基电流线圈是在输出端并联一的采样电阻，并选用磁导率小的铜或铝作为与线圈配合的待测母线。

Self-integral Rogowski current coil is used parallel sampling resistance in the out-port , and is selected the small magnetic conductivity copper or aluminum as the generatrix to be measured .

与此同时，等效电感的变化引起采样电阻上信号的相位与激励信号相位之间相位差的变化，利用幅值变化和相位变化与液体粘度之间的相关关系实现对液体粘度的测量。

And equivalent inductance change causes the difference between the signal phase and driving signal . We can use the relationship between breadth change and phase differences and the liquid viscosity , get the result of liquid viscosity .

提出了一种基于数字正交采样测量参数电阻R、电感L、电容C的新方法，分析了该方法的测量原理，并对其进行了计算机仿真。

Based on digital quadrature sampling , a new RLC parameter measurement approach is introduced and the elementary implementation principle is analysed .

采用P型栅压自举开关补偿技术，可以有效地克服采样管导通电阻变化引入的非线性失真，提高采样精度。

By compensating with P-type bootstrapped switch , this circuit can overcome nonlinear distortion , which is generally introduced by signal-dependent on-resistance , and improve sampling resolution .