Multi-level gear switching circuit and control method

Abstract

The invention discloses a multi-level gear switching circuit and a control method. The multi-level gear switching circuit comprises a battery management module and a motor driving module, the battery management module comprises a port X1, a port X2, a port X3 and a port X4; the motor driving module comprises a port Y1, a port Y2, a port Y3 and a port Y4; the port X1 is connected with the port Y1 through a power line L1; the port X2 is connected with the port Y2 through a power line L2; the port X3 is connected with the port Y3 through a power line L3; the port X4 is connected with the port Y4 through a power line L4; the battery management module outputs a multi-level signal through a port, and the motor driving module performs multi-level gear switching control according to the multi-level signal. According to the invention, an original I / O port with an AD function of a motor driving system is utilized, multi-level gear switching is realized by adopting analog signals, and compared with a traditional gear switching circuit, accurate positioning of gear memory can be completed without assistance of a duty ratio method of an internal timer.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a multi-level shifting circuit and a control method. Background technique [0002] At present, the gear-cutting circuit for controlling the motor drive system has been widely used in more and more industries. [0003] Some traditional gear-cutting circuits send and receive information through signal lines to control the switching of the switch and gear position, but the information transmission and communication of this scheme has a certain delay and slow response; there are also some traditional gear-cutting circuits. The gear circuit uses level control to switch on and off, and uses pulse voltage to control gear switching. Although the problem of communication delay is solved, this solution cannot remember the gear position, and if the duty ratio method is used to assist the gear position For memory, the use of internal timers will also be added to increase the detection...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a multi-level gear-cutting circuit and control method to solve the problems of signal delay, no gear memory, heavy detection burden and high cost in the prior art.

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