Research on a Novel Acceleration and Deceleration Control Method of Continuous Jerk

The linear and exponential acceleration/deceleration algorithms are adopted in traditional acceleration/deceleration control in CNC systems,but the machine vibration due to the mutation of acceleration also exists.S-curve acceleration and deceleration is adopted in some advanced CNC systems at present,but actually,S-curve is treated as Piecewise Polynomials,the value of jerk is piecewise constant,some discrete points may arose the mutation of jerk.An acceleration/deceleration control method based on Jerk control is presented,by restricting the value of jerk,and use of filters to complete smooth processing to reduce the machine vibration due to the jerk mutation,accordingly realize the high quality surface machining,and the machine tools can achieve a good acceleration and deceleration performance at the same time.