VME bus motor controller based on FPGA chip

Abstract

The invention discloses a motor controller which is developed by taking a programmable logical chip (FPGA) as a core and is based on a VME bus. The motor controller and a single-board computer meeting a VME standard can form a motor control system. A hardware structure of the controller mainly comprises a VME backboard socket connector 1, a voltage conversion chip converting +5V into +3.3V, a power supply chip 2 converting +5V into +2.5V, a power supply chip 3 converting +3.3V into +1.2V, a power supply chip 4, a VME bus address signal drive circuit 5, a VME bus data transmission control signal drive circuit 6, a VME bus data signal drive circuit 7, an FPGA chip 8, an optical fiber signal driver 9, an optical fiber transmitter 10 and an optical fiber receiver 11; the mechanical specification of the controller is a standard 6U circuit board 12. By combining a VME bus single-board computer, the invention can realize quick data communication capability and reach a favorable motor control effect. Moreover, because the FPGA has hardware programmable capability, the invention can program and modify a logical structure inside the FPGA under a condition that an external circuit is fixed, and has certain 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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