Bridge inspection vehicle frequency conversion control system and control method thereof

Abstract

The invention discloses a bridge inspection vehicle frequency conversion control system. The bridge inspection vehicle frequency conversion control system comprises a frequency converter, a PID controller, an image acquisition module and a speed prejudgment module; the frequency converter is in communication connection with a motor and is used for conducting frequency conversion control on the motor; the PID controller is in communication connection with the frequency converter and a speed sensor and is used for conducting closed-loop control on output signals of the frequency converter according to detection signals of the speed sensor; the image acquisition module is used for acquiring image information in the advancing direction of a bridge inspection vehicle; and the speed prejudgment module is in communication connection with the frequency converter, the PID controller and the image acquisition module and is used for prejudging the driving speed of the bridge inspection vehicle according to the image information acquired by the image acquisition module on the one hand and used for correcting the driving speed prejudging process according to real-time control information sent by the PID controller. According to the bridge inspection vehicle frequency conversion control system, the defects in the prior art can be overcome, and the real-time computation amount of the PID controller is decreased by presetting the driving speed.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a bridge inspection vehicle frequency conversion control system and a control method thereof. Background technique [0002] The bridge inspection vehicle is an engineering vehicle driven by a motor. The control of its driving state is realized through the frequency converter. Existing control methods are generally realized through PID controller and PID adjustment. However, this control method relies on a large number of real-time calculations of the PID controller, which requires high hardware. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a bridge inspection vehicle frequency conversion control system and its control method, which can solve the deficiencies of the prior art, and reduce the real-time calculation amount of the PID controller by presetting the driving speed. [0004] In order to solve the ab...

AI Technical Summary

Problems solved by technology

However, this control method relies on a large number of real-time calculations of the PID controller, which requires high hardware requirements.

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