For the lack of analytical method of acceleration and deceleration algorithm of S-shaped curve in NC system,this article proposes an acceleration and deceleration control algorithm of seven-segment S-shaped curve,which summerizes all the possible cases of the seven-segment S-shaped curve into 11 many times a dollar equation,and uses the root formula to abtain the acceleration and deceleration time.A multi-axis motion control card is independently studied and developed to verify all cases of the acceleration and deceleration control algorithm of seven-segment S-shape curve.The verification result shows that the algorithm is simple for application,stable in operation,which meets the requirements of high speed and high precision of numerical control system.
NC systemS-shape curveacceleration and deceleration controlseven-segmentroot formula