Research And Design For Efficient And Flexible NC Algorithm With Continuous Jerk And Adaptive Error Property

Precision CNC machining equipment is widely used, its control software algorithm is its most core technology, currently the technology gap at home and abroad in this field are obvious.Popular trapezoidal acceleration and deceleration algorithm and S-shaped acceleration and deceleration algorithm exists the acceleration or jerk break,and the motor start and stop that is to reach the goal with maximum acceleration,In the face of high curvature require frequent acceleration and deceleration of highly flexible processing situations often leads to inefficiencies, machine vibration,product gouge, less cutting and other adverse outcomes,and long time use can also lead to increased wear of the motor,decreased life expectancy;Common types of linear and circular interpolation algorithm class variety,but it is difficult to obtain a compromise in accuracy and resource consumption,and often overlook the importance of the transition between segments,to a certain extent, affected the efficiency and product quality.In both cases, the study abroad more solid and fruitful, significantly ahead of domestic related technologies, its core achievement level as confidential material be kept strictly confidential, to become technical barriers.In this paper, and proposed inter-segment interpolation algorithm based on adaptive forward deceleration algorithm and an error rate high order polynomial model, combined with the complete transition algorithm, which used self-developed based on DSP + CPLD development board, to do a more detailed evaluation of progress and improvement in the field of domestic made some contribution.Firstly contrast trapezoidal, S-shaped, exponential acceleration and deceleration traditional algorithm, noted disadvantages of each method and the advantages of improved methods and ideas proposed for technical points; cited iterative interpolation, linear interpolation, circular interpolation, etc. interpolation algorithm is universal, analyzing their problems and conflicts, and put forward a comprehensive optimization program.Then, establish a standard of Quintic deceleration velocity model, so speed, continuous implementation of acceleration, jerk and made jmax variable speed control mechanism based on improved hyperbolic tangent function on this basis, so that enhance the body's processing efficiency, further enhance system flexibility, then verified in simulation testing.On this basis, in order to cope with the continuous change in curvature of the reality of working environment, the different processing point of view put forward different transition mechanism. Then, set up a model based on adaptive error trichotomy proposed adaptive error optimized circular interpolation algorithm combines the advantages of other parameters method and error method, so that in the case do not take up a lot of resources, and to obtain more high accuracy, and greatly enhance the processing efficiency.Then, designs based on DSP + CPLD hardware test cards, the design ideas, implement the program, the paper collection of schematics, layout and basic design process, the necessary simulation tests, the final design to the finished product.Finally, set up the simulation environment and test platform. Proven, this set of algorithms have stronger flexibility, improve performance and accuracy while ensuring proper resource consumption, and strengthen the protection of the motor system, with practical industrial applications.