vme bus motor controller based on fpga chip

Abstract

The invention discloses a VME bus-based motor controller developed with a programmable logic chip (FPGA) as the core. The motor controller can form a motor control system with a single-board computer meeting the VME standard. The hardware structure of this controller mainly includes VME backplane connector 1, voltage conversion chip: +5V to +3.3V power chip 2, +5V to +2.5V power chip 3, +3.3V to +1.2V power chip 4, and VME bus address signal driving circuit 5, VME bus data transmission control signal driving circuit 6, VME bus data signal driving circuit 7, FPGA chip 8, optical fiber signal driver 9, optical fiber transmitter 10 and optical fiber receiver 11, the control The mechanical specifications of the device are 12 on a standard 6U circuit board. The invention can realize fast data communication capability and good motor control effect by combining with a VME bus single-board computer. And because the FPGA has hardware programmable capability, it can be programmed to change the logic structure inside the FPGA when the external circuit is fixed, which has a certain degree of flexibility.

Description

technical field [0001] The invention relates to the field of motor controllers, in particular to a motor control system based on the VME bus standard. Background technique [0002] The control system based on VME bus is widely used in high-power AC speed control systems such as steel and rail transit. This bus system has the advantages of openness and real-time performance, but its structure is complicated and the cost is high. [0003] Field-programmable gate array (FPGA) chips have hardware programmable capabilities and can develop a variety of combinational logic and sequential logic. Due to their flexibility and cost-effectiveness, FPGAs are also being used in motor control systems. [0004] In the patent 200510083982.6, the invention of realizing data exchange with the VME bus controller through a digital signal processing (DSP) chip is introduced. The invention involves a chip including a complex programmable logic device (CPLD), a dual-port memory (RAM) and a digital...

AI Technical Summary

Problems solved by technology

[0002] The control system based on the VME bus is widely used in high-power AC speed control systems such as steel and rail transit. This bus system has the advantages of openness and real-time performance, but the structure is complex and the cost is high.

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