Synchronous serial control system and method

Abstract

The invention provides a synchronous serial control system, which is characterized by comprising a synchronous signal line, a serial data line, a controller and a plurality of behavior devices; the controller comprises a frame counter and a synchronization module; the counting initial value of the frame counter is 0; the behavior device comprises a period counter and an operation module; the controller is connected with the operation module through the serial data line; the controller is connected with the period counter through the synchronizing signal line; and the counting initial value ofthe period counter is 0. A synchronous serial control method uses a synchronous serial control system. The system and method have the beneficial effects that synchronous communication between the devices by utilizing the optimized serial bus is realized on the premise of not keeping the clock frequency between the sending device and the receiving device to be the same.

Description

technical field [0001] The invention relates to the field of synchronous control, in particular to a synchronous serial control system and method. Background technique [0002] With the development of my country's economy and the improvement of people's living standards, my country's industrial automation is booming, and the industrial automation production based on multi-axis robots is increasing day by day. However, with the increasing requirements for production accuracy, traditional multi-axis robot control systems It is becoming more and more difficult to meet the needs of production accuracy. [0003] The traditional multi-axis robot control system uses serial or parallel communication to control each axis of the multi-axis robot: serial communication, the data exchange between the control switchboard and the motor is carried out bit by bit, and the data is transmitted bit by bit. Each bit of data occupies a fixed length of time. Although this communication method save...

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Problems solved by technology

There is no limit to the number of data characters after the synchronization character, which is determined by the length of the data block to be transmitted; there are 1 to 2 check characters, which are used by the receiving end to verify the correctness of the received character sequence, but This method requires the sending clock and the receiving clock to maintain strict synchronization, and if clock synchronization is to be achieved, frequency synchronization must be achieved first, and the phase error in the transmission process of the clock signal will inevitably lead to frequency error, resulting in difficulty in frequency synchronization , resulting in always being out of sync

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