Data stream relating control method and architecture of computer digital control system

A digital control system and associated control technology, applied in the direction of digital control, electrical program control, etc., can solve the problems of surface quality degradation, restriction of machining accuracy and feed speed, energy waste, etc., to reduce energy consumption and feed speed The effect of optimization and optimization of machining accuracy

Inactive Publication Date: 2008-04-09
江俊逢
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generated approximation polylines about trajectory motion cannot be optimized, unoptimized approximation polylines will inevitably result in loss of speed, waste of energy and degradation of surface quality
In addition, it also restricts the improvement of machining accuracy and feed speed, resulting in frequent information exchange between modules, thus reducing the reliability of the system
[0006] 2. The "calculation and walking process" is a process iteration, and its nonlinear complexity not only fundamentally restricts the openness of the CNC system, but also leads to

Method used

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  • Data stream relating control method and architecture of computer digital control system
  • Data stream relating control method and architecture of computer digital control system
  • Data stream relating control method and architecture of computer digital control system

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Experimental program
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specific Embodiment approach 1

[0057] A kind of DRC control method applied to numerical control equipment as shown in Figure 1, comprises the following steps:

[0058] In the first step, the PC system reads in the user program and compiles the user program.

[0059] The user program is the control request sent by the user to the actuator, and the actuator is the control object of the numerical control system. The motion instructions in the user program are established based on the motion performance of the actuator. Therefore, the user program is oriented to the actuator and also to the user.

[0060] There are two types of actuators, one is to complete the trajectory movement according to the given rules, and this type of actuator is the feed servo system. Another type of actuator is a switching device, which activates a switch to output a given parameter value. For example, the X-axis feeds 50mm forward at a speed of 1m / s, and the water pump outputs coolant at a flow rate of 2L / s.

[0061] Generally, t...

specific Embodiment approach 2

[0171] As shown in Figure 6, the architecture of the numerical control system using the data flow correlation control technology includes a PC system 1, a data flow controller 2, and an actuator 3.

[0172] The PC system 1 includes a PC, a network card, and a system bus 7 . Its function is to calculate and process user information, input user information through PC or network card, and output and execute programs through system bus 7. There are two types of input of user information: input of user program through programming language and task file of flexible manufacturing system (FMS) input through network card.

[0173] The processing of user information adopts the data flow association control technology in the first embodiment to compile user programs, process data, generate data control flow, optimize data manifold, and generate data flow distribution matrix and DCFS files.

[0174] Among them, the data processing is mainly the numerical calculation of tool compensation ...

specific Embodiment approach 3

[0179]As shown in Figure 8, the architecture of the numerical control system adopting the data flow associated control technology includes a PC system 1, a data flow controller 2, and an actuator 3. It differs from the second embodiment in that: there are multiple sets of data flow controllers 2 and actuators 3 . The PC system 1 adopts the data flow association control technology in the first embodiment to process the user program and generate multiple DCFS files, which are respectively output to each data flow controller 1 and executed by each actuator 3 accordingly.

[0180] Since the data flow controller 1 is a numerical control system that takes DCFS files as input. In the DRC control method, the PC system generates the DCFS file of the user program offline without participating in real-time control. The powerful numerical calculation ability, information processing ability and real-time management ability of the PC system can be fully utilized, and it becomes a centralize...

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Abstract

The invention discloses a data flow correlation control method and an architecture of a computer numerical control system, namely DRC control technology. In accordance with the generation, transmission and execution of the control information processing flow and based on the movement command of the execution organism, the DRC control technology divides the numerical control technology into three levels, such as a PC system, a data flow controller and an execution organism. The PC system completes the user program compiler, trajectory numerical calculation, data control flow generation, data manifold optimization and data-flow distribution matrix generation, execution program generation, etc in off-line. The data flow controller operates the execution program and distributes movement command in real time. The execution organism carries out the movement command. The DRC control system realizes the real-time control of the soft opening and process parameter of the numerical control system, cancels the real time control function of the interpolation iteration control technology, and substitutes the control method and the architecture of the prior art taking the interpolation iteration control algorithm as core based on the real-time operation system.

Description

technical field [0001] The invention relates to a computer numerical control system, in particular to a data flow correlation control method and system structure of a computer numerical control system. Background technique [0002] Numerical control technology is an automatic control technology that uses digital information to control. The basic problem is to control multi-coordinate linkage and some switching devices, so that the feed servo system can complete complex plane curve motion or space curve motion and other real-time tasks. It is the core of the numerical control system to digitally process the trajectories of these curved movements. In the past and now, the numerical control system adopts interpolation iterative control technology. The basic method is: the starting point coordinates, end point coordinates and curve equation of the motion track are known, and the numerical control system calculates the coordinate value or coordinate value increment of an interme...

Claims

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Application Information

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IPC IPC(8): G05B19/414
Inventor 江俊逢
Owner 江俊逢
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