Servosystem high-speed data interactive communication unit based on USB

Abstract

The invention relates to a servosystem high-speed data interactive communication unit based on a USB. According to the technical scheme, the COM end of an upper computer (1) is connected with the input and output end 2a of a USB interface module (2); the data end and the control end 2b of the USB interface module (2) are connected with the data end and the control end 11b of an FPGA (11) respectively; a data bus and an address bus of the FPGA (11) are correspondingly connected with a data bus and an address bus of a DSP controller (8); the PWM output end of the DSP controller (8) is connected with the PWM input end of a power drive module (10); two current feedback ends of a permanent magnet synchronous motor (9) are correspondingly connected with the input end 8c and the input end 8d of the DSP controller (8); the position feedback end of the permanent magnet synchronous motor (9) is connected with the input end 8b of the DSP controller (8); the output end of the power drive module (10) is connected with the input ends of the permanent magnet synchronous motor (9). The servosystem high-speed data interactive communication unit based on the USB has the advantages of being simple in structure, high in transmission rate, stable in transmission and convenient to use.

Description

technical field [0001] The invention belongs to the technical field of communication units for high-speed data interaction in servo systems. In particular, it relates to a communication unit for high-speed data interaction of a USB-based servo system. Background technique [0002] Servo systems aiming at high speed and high precision are widely used in high-tech fields such as laser processing, robots, and high-precision machine tools. As the control algorithm of the servo system becomes more and more complex, the servo control effect is largely determined by several related parameters of the algorithm. During the operation of the servo system, various state parameters, such as position, speed, error, etc., are obtained by modifying the algorithm parameters. basic basis. In the research and development process, in order to have a deeper and more convenient understanding of the operating status of the servo system, it is necessary to use a host computer to monitor and d...

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Problems solved by technology

[0003] At present, the main methods of communication between the servo system and the host computer used in China are as follows: serial port communication, which has a simple structure, but the data transmission rate is low and the stability is poor, and the transmitted data is unreliable; optical fiber communication, the transmission rate is high And the transmission stability is good, but the cost is high, the structure is complicated, and it is not convenient for data communication with conventional PC computers

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