With analogue servos the frequency of the control pulse (aka frame rate) affects the operation of the internal electronics which in turn affects the voltage that is applied to the motor terminals. Increasing the frequency of the control pulse often affects the frequency and thus average current at the motor windings which may be considered as making the servo working harder than intended. Other undesirable behaviour may also manifest at these higher frequencies depending on the electronic design.
Unlike analogue servos, for most digital servos the frequency of the control pulse has no negative effects to the servo. The control pulse is simply a position command which the servo controller reads. The process that drives the motor runs independently and thus the frequency and current at the motor windings remain unaffected.作者: 昊月当空 时间: 2009-10-11 09:30
GY520...怎樣好??