CAD Based Trajectory optimization of PTP Motions using Chebyshev Polynomials

Oosterwyck, Nick Van; Yahya, Abdelmajid Ben; Cuyt, Annie; Derammelaere, Stijn

doi:10.1109/aim43001.2020.9158893

Cited by 9 publications

(8 citation statements)

References 23 publications

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“…Mechanism models replace prototyping, allowing computational evaluation of multiple designs with limited cost. In [4], [11], the machine's system properties are derived from CAD models to optimize the motor's motion profile towards minimal energy consumption. However, the present paper does not include the optimization of the motor's motion profile, yet focuses on the consequence of the component's geometry on energy consumption.…”

Section: Minmentioning

confidence: 99%

“…This is a consequence of having an objective function with local minima, as in this case (see Table I). On the one hand, using the Genetic Algorithm reduces the risk of getting stuck in local minima, yet it cannot be assured [4], [25]. On the other hand, the result of the SQP algorithm is strongly influenced by the selected starting point of the algorithm.…”

Section: Design Optimizationmentioning

confidence: 99%

“…Many recent studies [3] pay attention to minimizing the energy dissipation in the electric motor to reduce the consumed electrical energy. Moreover, reducing the energy losses in the motor lowers the probability that the motor can be overheated [4]. The link lengths in a mechanism can differ while fulfilling the same task, being the end-effector's Point-To-Point (PTP) displacement.…”

Section: Introductionmentioning

confidence: 99%

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An Industrial Applicable Approach towards Design Optimization of a Reciprocating Mechanism: an emergency ventilator case study

Yahya

Oosterwyck

Herregodts

et al. 2023

2023 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM)

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Design optimization of mechanisms is a promising research area as it results in more energy-efficient machines without compromising performance. However, machine builders do not actually use the potential described in the literature, as these methods require too much theoretical analysis. Therefore, this paper proposes a novel industrial applicable approach that enables the design optimization of reciprocating mechanisms using CAD models.The 3D multi-body software is used to perform motion simulations, from which the objective value samples can be extracted. In this paper, the considered objective value is the required torque, for a specific combination of design parameters, to fulfil the movement. Dedicated software can execute multiple motion simulations sequentially and interchange data between the different simulations, which automates the process of retrieving objective value samples. Therefore, without in-depth analytical design analysis, a machine designer can evaluate multiple designs at a low cost. Moreover, an optimal design that meets the objective can be found by implementing an optimization algorithm. In a case study of an emergency ventilator mechanism which considers three link lengths as design parameters (DP's), 39 CAD motion simulations allowed a reduction of the RMS torque of the mechanism by 57.2%.

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Section: Minmentioning

confidence: 99%

Section: Design Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Industrial Applicable Approach towards Design Optimization of a Reciprocating Mechanism: an emergency ventilator case study

Yahya

Oosterwyck

Herregodts

et al. 2023

2023 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM)

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“…The intersection point R of the normal plane with (10) is thus given by ∆, R = 0, R = U + r∆, or more explicitly,…”

Section: Multidimensional Sparse Interpolationmentioning

confidence: 99%

“…Awareness about the influence of machine components geometry on energy consumption has recently attracted attention [6,7,8]. Mechanism models [9,10] replace the prototyping, allowing computational evaluation of multiple designs with limited costs. A coronaventilator is used as a validation case within this study.…”

Section: Introductionmentioning

confidence: 99%

CAD Based Design Optimization of Four-bar Mechanisms: a coronaventilator case study

Yahya¹,

Oosterwyck²,

Knaepkens³

et al. 2022

Preprint

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Design optimization of mechanisms is a promising research area as it results in more energy-efficient machines without compromising performance. However, machine builders do not actually use the design methods described in the literature as these algorithms require too much theoretical analysis. Moreover, the design synthesis approaches in the literature predominantly utilize heuristic optimizers leading to suboptimal local minima.This research introduces a convenient optimization workflow allowing wide industrial adoption, while guaranteeing to reveal the global optimum. To guarantee that we find the global optimum, a mathematical expression of the constraints describing the feasible region of possible designs is of great importance. Therefore, kinematic analysis of the point-to-point (PTP) planar four-bar mechanism is discussed to obtain the static and dynamic constraints. Within the feasible region, objective value samples are generated through CAD multi-body software. These motion simulations determine the required torque to fulfill the movement for a certain combination of design parameters.

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