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Design method for control structure of hardware-in-loop numerical control system

A technology of numerical control system and control structure, applied in general control system, control/adjustment system, instrument, etc., can solve problems such as strong dependence on hardware environment, difficulty in verifying system function, complicated development process, etc., and achieve convenient development, design and verification , to meet the test requirements, to ensure the accuracy of the effect

Active Publication Date: 2013-11-13
SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the disadvantages of the existing CNC such as complex development process, difficult verification of system functions, cumbersome testing process and strong hardware environment dependence, the present invention proposes a method that satisfies functional module testing and overall system control function testing, and reduces system testing risks and costs. The design method of the control structure of the hardware-in-the-loop numerical control system

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  • Design method for control structure of hardware-in-loop numerical control system
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  • Design method for control structure of hardware-in-loop numerical control system

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Embodiment 1

[0054] Such as image 3 As shown, it is a flow chart of the design method of the control structure of the hardware-in-the-loop numerical control system. The present invention adopts field bus technology and hardware-in-the-loop design ideas, and proposes a design method for the control structure of the hardware-in-the-loop numerical control system, which meets the application requirements such as functional module testing and overall system control function testing in the system development and design process, and improves the system The quality level and reliability of the development, reduce the risk and cost of testing, and reduce the testing time of the system.

[0055]The inventive method is a method for designing a control structure of a hardware-in-the-loop numerical control system, comprising the following steps:

[0056] According to the functional characteristics and control requirements of the CNC system, build a CNC simulation operating environment in the CNC syst...

Embodiment 2

[0085] Such as Figure 5 As shown, it is a test structure diagram of the overall control function test of the system in the hardware-in-the-loop system. In this embodiment 2, on the basis of the simulation operation environment in embodiment 1, it is necessary to increase the corresponding test requirements according to the overall control function of CNC. The simulation function module.

[0086] Simulation processing test process of the overall control function of the system: According to the processing test requirements of the CNC system, determine the basic function modules of the CNC system, including the man-machine interface module, interpreter module, trajectory planning module, interpolation algorithm module, tool compensation module, space Kinematic transformation; execute the specified machining test program in CNC to verify the machining control process of CNC; in the simulation running environment, simulate the actual machining process of CNC machine tools accordin...

Embodiment 3

[0090] Such as Figure 6 As shown, it is a test structure diagram of the motion drive device in the hardware-in-the-loop system. The simulation operating environment can also simulate CNC to test the functional characteristics of its external equipment. The test includes the following steps:

[0091] Establish the mathematical model of CNC, and use the simulation operating environment to simulate the specified CNC;

[0092] In each communication cycle, the simulation operating environment sends control commands to the external device;

[0093] The external device executes the specified system operation according to the obtained control command, and returns the response information to the simulation operating environment;

[0094] The simulation operating environment calculates the control command of the next communication cycle according to the established mathematical model and equipment response information, and repeats the above cycle communication process until the simula...

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Abstract

The invention discloses a design method for a control structure of a hardware-in-loop numerical control system. The method comprises the following steps of: constructing a simulation running environment of CNC (Computer Numerical Control) in the numerical control system according to the function properties and the control demands of the numerical control system; connecting the CNC with the simulation running environment by a field bus, and conducting two-way real-time and reliable data communication; executing a process testing program by the CNC, and conducting simulation processing test on a whole control function module or a whole specific function module in the CNC; according to the processing control information in the test process, simulating the control operations of the devices (except the CNC) in the numerical control system, and displaying the processing process of workpiece; and verifying whether the functions and the performances of the CNC meet the requirements or not according to the processing form and the test information of the workpiece. According to the method, the application demands such as the tests of function modules and the whole control functions of the system in the system development process can be met, the reliability of the system development is improved, the risk and the cost for the system test is reduced, and the test time is shortened.

Description

technical field [0001] The invention relates to a design method of a numerical control system structure, in particular to a design method of a control structure of a hardware-in-the-loop numerical control system. Background technique [0002] The CNC system is mainly composed of two parts: system software and hardware devices. Wherein, the hardware device mainly includes: a numerical control device (Computer Numerical Control, CNC for short), an input / output device, a motion drive device, and an electrical logic control device and other hardware devices. CNC is the control core of the whole system, and communicates with other control devices through designated interfaces to coordinate the overall control functions. [0003] With the continuous introduction of new control functions and hardware devices, the development and design process of CNC is becoming more and more complicated. On the one hand, new control algorithms, synchronization technology, hardware equipment, etc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B17/02
Inventor 于东杜少华黄艳郑飂默杨欢
Owner SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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