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中文摘要：
影响电除尘器的除尘效率和能耗的关键问题之一是清灰振打控制系统的效率，有效的清灰振打控制不但能降低粉尘“二次飞扬”，而且能够有效的降低电除尘控制器的能耗。从电磁学理论和力学理论首次研究了顶部振打器的数学模型，分析了振打锤运动的三个阶段。研究表明，振打锤在第一运动阶段的非均匀磁场中，电能做正功，在电磁力的作用下，使振打锤从静止开始产生正向加速度运动；振打锤在第二阶段均匀磁场运动中，电能没有做功，能量主要在定子线圈内热能形式消耗；第三阶段非均匀磁场中，振打锤受到反向的电磁力作用，加速度和运动方向相反，电能做负功。由于振打锤提升的高度直接影响清灰振打力的强弱，所以电能对振打锤的有效作用只有在第—运动阶段。最后，通过Matlab仿真，对定子线圈电流大小和脉冲电流的频率进行了仿真研究，提出了节能振打的最佳脉冲电流频率，对电除尘器的节能研究具有重要的意义。
英文摘要：
One of the key problems of ESP is the deashing shaking control system. Shaking control system with effectively can not only reduce ＂the second free black＂of mill dust ,but also can reduce power-wasting of the ESP. The mathematic model of the top magnetic shaker controller was studied from the electro-magnetic theory and mechanics theory. It indicates that on the first moving stage of shaking hammer in non-uniform magnetic field, the electric energy makes positive work. The shaking hammer on acting of the electric magnetic moves with forward accelerated, On the second moving stage with uniform magnetic field, the electric energy does not make work, and the stator coil loses the electric energy on heat energy. On the third moving stage with non-uniform magnetic field, the shaking hammer receives back action and the electric energy makes opposing work. The hoisting depth of shaking hammer directly influences the deashing shaking, it indicates that the shaking hammer make useful effect on the first moving stage, however, on the other stage make no actual acting. The current of stator coil and the frequency of impulse current were studied by Matlab emulating. Aiming to energy saving, frequency of the impulse current was improved optimally. It is very meaningful to research on energy saving of the ESP.
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