Pulse control method and system

Abstract

The invention discloses a pulse control method and system. The method comprises the following steps: A, marking pulse frequency as multiple stages, and dividing the stages into multiple sub-stages, wherein each of the sub-stages corresponds to a pulse frequency value, and one stage is marked as the current stage; B, setting an FIFO (First In, First Out)-based data storage queue; C, sequentially storing pulse frequency values corresponding to the sub-stages to which the current stage belongs into the data storage queue, and marking the next stage of the current stage as a secondary stage; D, sequentially reading the pulse frequency values from the data storage queue and outputting the pulse frequency values; E, updating the secondary stage as the current stage; F, repeating the steps C-E until the pulse frequency values corresponding to all the sub-stages into the data storage queue. The system is used for executing the method. The pulse frequency is divided into the multiple stages andsmaller sub-stages according to the variation trend, variations of the pulse frequency can be well distinguished, and motor control is facilitated. The pulse frequency values are stored by the FIFO,so that memory limitation of the memory can be reduced, and the motor control efficiency is improved.

Description

technical field [0001] The invention relates to the field of PLC control, in particular to a pulse control method and system. Background technique [0002] Multi-segment pulse output means that in the process of pulse transmission, the speed can be automatically adjusted to a specific fixed frequency according to the different parameter settings and the specified displacement can be moved. There must be a smooth transition between each segment without obvious pauses. In addition, the acceleration and deceleration steps should be as delicate as possible, otherwise the frequency change during the acceleration and deceleration process will cause the motor to vibrate. The motor needs an acceleration process from a standstill to a stable frequency, and a deceleration process when decelerating to zero. In the actual processing process, the acceleration will be The process of deceleration and deceleration is discrete into the step change of frequency. When the number of acceleratio...

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Problems solved by technology

The disadvantage of this method is that the maximum number of segments is limited, and all the data is preprocessed, and the user cannot add or modify segment parameters. In addition, the reduction in the number of segment segments will make the frequency curve control the stepper motor process, and the acceleration and deceleration will be obvious. The vibration of the motor

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