A synchronous serial control system and method

Abstract

The invention provides a synchronous serial control system, which is characterized in that it includes a synchronous signal line, a serial data line, a controller and a plurality of actors; the controller includes a frame counter and a synchronization module; the frame counter The counting initial value is 0; the behavior device includes a cycle counter and a running module; the controller is connected to the running module through the serial data line; the controller is connected to the cycle counter through the synchronization signal line; The counting initial value of the period counter is 0. A synchronous serial control method using a synchronous serial control system. The beneficial effect of the present invention is: on the premise of not keeping the same clock frequency between the sending device and the receiving device, the optimized serial bus can be used to realize the synchronous communication between the devices.

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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