A New Family of Parameterized Polynomials for Cam Motion Synthesis

Lee, H. P.

doi:10.1115/1.2826737

Cited by 9 publications

(2 citation statements)

References 2 publications

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“…Although it has comparatively satisfactory properties for general applications, it is not easy for local modification. A parameterized polynomial curve can be adopted to present a more flexible cam profile [2,7,12,13]. In the multi-body system dynamics model explained earlier, the cam profile is modelled as a smooth curve passing through a series of design points.…”

Section: Description Of the Local Cam Profilementioning

confidence: 99%

Optimum Design of Local Cam Profile of a Valve Train

Qin

2010

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this paper, optimization of the local cam profile of a valve train modelled by a parameterized Bezier curve is described. Dynamic responses of the valve train are simulated through its multi-body system dynamics model built using ADAMS software. The kriging method is used to build the surrogate model, which presents the relationship between dynamic responses resulting from the multi-body system dynamics simulation and the parameters of the local Bezier profile. The local cam profile is optimized through a generic algorithm, such that the acceleration peak at the valve open phase is reduced significantly.

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Section: Description Of the Local Cam Profilementioning

confidence: 99%

Optimum Design of Local Cam Profile of a Valve Train

Qin

2010

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…One is pre-planned by mechanical or electronic cam; the other is real time calculation by the CNC system according to the given acceleration and deceleration. The free-form curve is used to design mechanical cam profile to achieve smooth motion of the slave shaft [2][3][4][5][6][7][8][9][10][11][12][13]. But the cost of the mechanical cam manufacturing is very high, and one cam can only achieve one movement, not flexible.…”

Section: Introductionmentioning

confidence: 99%

The Track Motion Control of the Flying Shear Based on Quintic Spline Curve

Zhang

Zhou

2012

AMR

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If the acceleration and deceleration of the flying shear track motion is constant, the acceleration and jerk of the tracking algorithm are not continuous, these result in a mutation of the force on moving parts and a great impact on the abrasion and service life of the equipment. Moreover, these affect the following effect of the servo system, make the cutting precision decreased. To improve the shear precision and cross section quality, an algorithm of the synchronous motion tracking of the flying shear is proposed. This algorithm directly uses the quintic spline curve profile to track the strip feed without any cam profile table. The quintic spline curve trajectory of the flying shear can make the velocity and acceleration of the blade rotation movement smooth. According to the length that user inputs, the control system uses iteration method to calculate the initial waiting length of the feed to carry out long cutting or short cutting automatically. Nonlinear synchronous movement is carried out to synchronize the horizontal speed of the flying shear with the feed speed of the strip on the cutting zone, which ensures the high-precision cutting length and smooth cutting cross section.

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A universal optimal approach to cam curve design and its applications

Qiu

Lin

et al. 2005

Mechanism and Machine Theory

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A New Family of Parameterized Polynomials for Cam Motion Synthesis

Cited by 9 publications

References 2 publications

Optimum Design of Local Cam Profile of a Valve Train

Optimum Design of Local Cam Profile of a Valve Train

The Track Motion Control of the Flying Shear Based on Quintic Spline Curve

A universal optimal approach to cam curve design and its applications

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