Multi-channel DC motor control system based on FPGA and DSP

Abstract

A multi-channel DC motor control system based on an FPGA and a DSP is characterized by comprising a master control programmable logic device module, a digital signal processor module, a human-computer interaction interface, a CPU power supply module, an internal communication module, a first status indication module, an underlying drive module, a 10-channel DC motor module, a second status indication module, a high voltage power supply module, a sampling module, a control interface module and the like. The multi-channel DC motor control system based on the FPGA and the DSP is advantageous in that first, two adopted main control chips of an EP1C6Q240C8N and a TMS320F2812 in the system are widely used with high processing speed and are applicable to large complex control systems; second, by use of an integrated chip MC33886, the underlying drive module is highly integrated, and when the underlying drive module is compared with the previous way of driving a motor with a manually-built H-bridge in markets, reliability is greatly improved, implementation circuits are also significantly reduced and cost is dramatically reduced; third, the overall system is highly flexible and can control different numbers of DC units (with a voltage level at 40V or less) according to actual needs; and fourth, the system is small in size, high in integration and easy in adjustment.

Description

(1) Technical field: [0001] The invention belongs to the technical field of motor control, and relates to a control system of an FPGA and a DSP multi-channel DC motor. (two) background technology: [0002] DC motor control technology is widely used in industrial production, and the rapid development of modern industry has higher and higher requirements for DC motor control, such as machine tools, printing machines, etc. The proportion of applications is particularly significant. The traditional motion control card with single-chip microcomputer as CPU can no longer meet the requirements of modern industry and social development. To sum up, it is mainly manifested in: [0003] (1) Closed structure [0004] What is provided to the user is only the target operation of a specific function in a specific environment, and the interior of the control system, including the control algorithm and the underlying interface, is a "black box" to the user. This structure is inconvenient ...

AI Technical Summary

Problems solved by technology

This structure is not convenient for expanding and improving the functions of the system, and it is also not convenient for sharing and reusing system resources.

[0005] (2) Poor compatibility of control software

[0006] The structure of the software depends on the processor hardware, it is difficult to port between different systems, and it is not convenient for software upgrades or updates

[0007] (3) Poor fault tolerance and reliability

[0008] (4) Poor parallel capability

[0009] The execution of single-chip instructions is completed with a simplified instruction system, that is, instructions are executed sequentially. In case of emergencies, the interrupt system can only be used for processing, which means that it must wait for a certain period of time, and parallel processing cannot be performed at all.

Therefore, it is incompetent when dealing with high-speed and complex systems

In addition, there are already DC motor control systems used in industry on the market today. The drive circuit uses an artificially built H-bridge, and the number of motors controlled is limited. Basically, one motor is controlled by one control system. The control range is limited and the cost is high. flexibility check

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