The resistive wall mode (RWM) control on the HL-2M tokamak is simulated with the MARS-F code (Liu et al 2000 Phys. Plasmas 7 3681), aiming at quantifying control current and voltage requirements when more realistic issues are taken into account, i.e. the control power saturation and the sensor signal noise. The fluid model predicts a narrow stability region for the n = 1 RWM without magnetic feedback, in the 2D parameter space of the plasma pressure versus the toroidal flow speed. Magnetic feedback can fully stabilize the RWM on HL-2M. Without considering the voltage limitation and the sensor signal noise, it is found that plasma flow helps active control of the mode, by reducing the required critical feedback gain for both flux-to-current and flux-to-voltage control schemes. In the absence of the sensor signal noise, the lowest control voltage saturation level, below which the RWM control is lost, is found to roughly satisfy a linear relation to the plasma flow frequency, indicating that subsonic plasma flow is effective in relaxing the control power requirement for the RWM feedback stabilization. The presence of the sensor signal noise substantially modifies the feedback results. A statistical study finds that the sensor signal noise, with the standard deviation of 0.1 G on HL-2M, roughly doubles the required control voltage for successful mode control. The synergistic stabilization effect due to plasma flow is somewhat weakened by the presence of the sensor signal noise. At a given rotation, the tolerable voltage limit generally increases with increasing feedback gain due to the sensor signal noise.

HL-2M 托卡马克上的电阻壁模式 (RWM) 控制使用 MARS-F 代码（Liu等人2000 Phys. Plasmas 7 3681）进行模拟，旨在在考虑更现实的问题时量化控制电流和电压要求，即控制功率饱和和传感器信号噪声。流体模型预测n的狭窄稳定区域 = 1 RWM，无磁反馈，在等离子体压力与环形流速的二维参数空间中。磁反馈可以完全稳定 HL-2M 上的 RWM。在不考虑电压限制和传感器信号噪声的情况下，发现等离子体流有助于主动控制模式，通过降低通量-电流和通量-电压控制方案所需的临界反馈增益。在没有传感器信号噪声的情况下，发现最低控制电压饱和水平（低于该水平将失去 RWM 控制）大致满足与等离子体流动频率的线性关系，表明亚音速等离子体流动在放松控制功率方面是有效的RWM 反馈稳定的要求。传感器信号噪声的存在实质上改变了反馈结果。一项统计研究发现，HL-2M 上标准偏差为 0.1 G 的传感器信号噪声大约是成功模式控制所需的控制电压的两倍。由于等离子流的协同稳定效应，传感器信号噪声的存在在一定程度上减弱了。在给定的旋转中，由于传感器信号噪声，容许电压限制通常随着反馈增益的增加而增加。