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Embedded digital servo controller

A servo controller, digital servo technology, applied in electrical program control, program control in sequence/logic controllers, etc., to achieve the effects of reliability assurance, high reliability, and precise management

Inactive Publication Date: 2012-05-30
江苏省机械研究设计院有限责任公司
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  • Description
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AI Technical Summary

Problems solved by technology

The system can implement more advanced and complex control algorithms and complete the precise management of the servo action system, but it still needs further improvement in the reliability of the system control

Method used

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Embodiment Construction

[0026] like figure 1The hardware platform shown is composed of a PCI plug-in 1553B control card based on the upper computer, a 1553B coupler, a 1553B special cable, a controller based on USB and 1553B, and a digital servo controller based on 1553B. Among them, the multi-channel servo controller with 1553B interface based on FPGA and DSP technology is the core, which can complete the RT function of multi-channel servo controller and 1553B. And all functions are completed by a piece of FPGA and a piece of DSP, FPGA completes all logic functions and RT functions of 1553B, and DSP completes all calculation functions.

[0027] like figure 1 As shown, the digital servo controller includes: RT communication unit of 1553B, A / D acquisition unit of state parameters, D / A unit of control output, FPGA logic unit, DSP operation unit and power supply and distribution system.

[0028] Its specific implementation plan is as follows:

[0029] RT communication unit of 1553B: fully utilizes FP...

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Abstract

The invention provides an embedded digital servo controller which is used for servo control over a hydraulic system and can realize totally digital control. The embedded digital servo controller comprises a 1553 bus (1553B) control card based on an upper computer, a 1553B coupler, a 1553B special cable and a digital servo control chip with a 1553B interface, wherein the digital servo control chip comprises a radio telephone (RT) communication unit for a 1553B, an analog / digital (A / D) acquisition unit for state parameters, a D / A unit for controlling an output, a field programmable gate array (FPGA) unit, a digital signal processing (DSP) unit and corresponding power supply and distribution systems, wherein by adoption of the FPGA unit, bus control (BC), bus management (BM) and RT functions of the 1553 bus are realized. Compared with the conventional analog controller and the conventional digital controller, the embedded digital servo controller can realize a more advanced complicated control algorithm, finishes accurate management of a servo motion system and has control reliability.

Description

technical field [0001] The invention relates to an executive control mechanism for a hydraulic system, in particular to an embedded digital servo controller based on DSP, FPGA and USB. Background technique [0002] Commonly used hydraulic system servo mechanisms are mostly separated from the control system and the hydraulic system, and most of the servo controllers are realized by analog circuits. Once the control parameters are set, it is difficult to change. In order to meet the needs of the digital control system, a digital control servo controller must be designed. [0003] Chinese patent 200420093571.6 discloses a high-performance electro-hydraulic servo controller for precise control of linear displacement or angular displacement. It is composed of hydraulic control system and electrical control system. The core of the electrical control system is the AC motor servo controller. According to the deviation of the control object, it automatically performs stepless freque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
Inventor 杨永军朱军
Owner 江苏省机械研究设计院有限责任公司
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