Controller, control system and control method of hydraulic machine movement on basis of Ethernet

Abstract

The invention provides a controller, a control system and a control method of hydraulic machine movement on the basis of Ethernet. A logic circuit conversion unit is connected with a digital signal processor, data exchange between the logic circuit conversion unit and the digital signal processor are achieved through interruption control, an Ethernet control bus, a data bus and an address bus in a digital signal processor (DSP) is connected into a field programmable gata array (FPGA), the logic circuit conversion unit and an Ethernet data communication module achieve parallel data exchange between the Ethernet data communication module and the logic circuit conversion unit, the logic circuit conversion unit enables control words to be wrote in analog to digital (A / D) through a single program initiation (SPI) bus, and electric isolation is performed through a digital quantity isolation circuit at the period. An external voltage signal is converted into a 12-bit high precision digital signal through A / D conversion, a serial digital signal experiencing the digital quantity isolation is transmitted to the logic circuit conversion unit through the SPI bus, the digital signal is transmitted to the digital quantity isolation by the logic circuit conversion unit through the SPI bus, and the serial digital signal is converted into an analog quantity signal through the D / A, and the analog quantity signal is output after being amplified.

Description

technical field [0001] The invention relates to a motion control device for a hydraulic press. In particular, it relates to an Ethernet-based hydraulic press motion controller, a control system and a control method. Background technique [0002] At present, my country's industrial production has entered a stage of rapid development. At the same time, the demand for various controllers has greatly increased in today's increasingly automated production. In high-tech fields such as aerospace, large-scale equipment manufacturing, and electronic information, higher requirements are put forward for the controller's stability, anti-interference, precision, speed and other indicators. But now the domestic motion controller market is still dominated by foreign products, and the high-level controller market is almost monopolized by several foreign companies, which means that our country now lacks a low-cost, high-reliability motion controller with independent intellectual property ri...

AI Technical Summary

Problems solved by technology

But now the domestic motion controller market is still dominated by foreign products, and the high-level controller market is almost monopolized by several foreign companies, which means that our country now lacks a low-cost, high-reliability motion controller with independent intellectual property rights. controller

[0003] In the large-scale hydraulic machine production industry, on the one hand, subject to the technical monopoly of foreign-produced motion controllers, domestic hydraulic machines in my country have not been able to have complete independent intellectual property rights; It is unique, but in practical applications, general-purpose motion controllers are often used, which will bring a lot of inconvenience to producers due to the mismatch of signal characteristics and specification requirements, and will also cause unnecessary waste of resources.

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