Process curve trajectory planning method for servo press
A technology of processing technology and curve trajectory, which is applied to the planning of curve trajectory of servo press processing technology, and the field of curve trajectory planning of servo press processing technology based on open servo control system, which can solve the problems of poor process adaptability and operability, etc. Achieve the effect of improving process adaptability and reducing signal processing volume
Active Publication Date: 2017-01-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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[0007] The technical problem to be solved by the present invention is to overcome the disadvantages of relatively poor process adaptability and operability of existing trajectory planning schemes, and provide a track planning solution that can adapt to different driving mechanisms and different processing technology requirements, and has good feasibility and process Adaptive servo press machining process curve trajectory planning method to establish a servo motor speed control scheme based on different optimization target conditions
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[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0033] In the trajectory planning process of the servo press processing process curve, the parameter range of some key position control points during the operation of the slider, partly according to the relevant characteristics of the processing material and the processing mode of the servo press, etc. can be determined by the user through the user interface. The given parameters are directly or indirectly derived, but the complete geometric parameters of the process curve cannot be directly determined by these key parameters, that is, some parameters of the curve are uncertain, so by adjusting the correlation between the key position control points of the curve The optimal design of process curves adapting to different target conditions can be achieved by combining parameters. The trajectory planning method of the servo press processing process curve of the ...
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The invention discloses a machining technology curve trace planning method for a servo press on the basis of an open servo control system and belongs to the technical field of control and manufacture. The method comprises the geometrical feature step for a machining technology curve, the discrete step of the machining technology curve, the interpolation step of the machining technology curve, the optimal technology curve step and the storing step of optimal data. By means of the machining technology curve trace planning method for the servo press, an original curve segment meeting the requirement for precision control is constructed through guide points in a point-by-point mode, and the signal processing amount of a motor control system between the guide points is reduced. The guide points are connected through a sliding block stroke curve segment under the condition of a uniform rotating speed of a motor, namely the same type of machining technology curve, curve planning according to different parameters can be achieved by adjusting time points corresponding to speed control points, and the technological adaptability of the machining technology curve planning is improved.
Description
technical field [0001] The invention relates to a method for planning a curve trajectory of a machining process of a servo press, specifically a method for planning a curve trajectory of a machining process of a servo press based on an open servo control system, belonging to the technical field of control and manufacturing. [0002] technical background [0003] At present, the trajectory planning of the processing curve of the servo press is mostly realized by the method of high-level curve discrete approximation. The geometric descriptiveness and differentiability of the process curve and the operability of its curve planning are the core technical indicators of the existing trajectory planning methods. [0004] The basic idea of the trajectory planning method based on higher curves is to adjust the fitting effect of higher curves between key control points to achieve the geometric continuity requirements of the target curve for the given curve geometric parameter charact...
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IPC IPC(8): G05B19/19
Inventor 唐敦兵杨俊张泽群孙竞伟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS