gradient magnetic field meaning in English
磁场梯度
梯度磁场
Examples
- Clinical and mechanical studies progress on treatment of malignant tumour by ultralow frequency pulsed - gradient magnetic fields
半梯度磁场治疗恶性肿瘤的临床和机理研究进展 - But can keep even gradient magnetic field range strong , hall ' s component can only measurement displacement among a small circle ( usually only about 1mm )
然而，能保持均匀梯度磁场的范围不大，霍尔元件只能小范围(通常仅约1mm )的测量位移。 - The hore component is set on the tracking mechanical system to detect the magnetic field ' s movement . under this situation , the hore component will always keep up with the target ' s movement and keep in the magnet ' s unitary gradient magnetic field
这样，霍尔元件惯性小、非接触的优点将使它在各种位移与振动的测量中发挥作用，成为一种性能优良的位移传感器。 - According to more effect , when the hore component is placed in a gradient field , at the same time the direction of the current is perpendicular to the direction of the voltage , then between the two parallel side face come out the hore voltage . when hore component is set in this kind of uni - gradient magnetic field and the electric current is unchanged , the voltage output of hore component will be proportional to the position of the hore component in the magnetic field . so we can use the hore component to measure the movement of hore component against magnetic field
根据霍尔效应可知，置于磁场中的霍尔元件若电流方向与磁场方向垂直，则在霍尔元件垂直于磁场和电流方向的两个侧面将产生电势，将霍尔元件置于强度随空间位置线性变化的磁场中，且控制电流恒定，输出就正比于霍尔元件处于磁场中的位置，因此可以用霍尔元件来测量磁场与霍尔元件间的相对位移量。 - If we want to compose in a larger area a uni - gradient magnetic field , the device will be too complicated and unfit for move . it will restrict the application of hore component in displacement measuring . in order to change this situation , in this dissertation , a kind of auto - tracking measuring system is introduced
若能在简单磁场的条件下，通过自动跟随系统驱动霍尔元件跟随测量移动物体的位移，使霍尔元件尽可能地保持在均匀梯度磁场内，就可以在很大程度上增加测量范围。