Many studies to find solutions for the optimum synthesis problems of linkage mechanisms for path, motion or function generation have appeared in the literature. However, their main focus has been on the development of optimization algorithms or synthesis methods without the handling of the defect problems or only with consideration of the same assembly mode. Hwang and Chen's pioneering work proposed a defect-free optimum synthesis method with constraint equations to eliminate order, circuit and branch defects for Stephenson III six-bar motion generators. However, their proposed constraint equations for the three types of defects are incomplete or not clear enough. In this discussion, we not only examine these faults but also offer the correct and complete constraints to eliminate the three types of defects.

中文翻译：

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讨论 Hwang 和 Chen 的约束方程消除阶次、电路和分支缺陷的论文：Stephenson-III 运动发生器的无缺陷合成，发表在机械工程科学杂志，2008 年；222: 2485–2494

文献中出现了许多为路径、运动或函数生成的连杆机构的最佳综合问题寻找解决方案的研究。然而，他们的主要重点是开发优化算法或综合方法，而没有处理缺陷问题或仅考虑相同的组装模式。Hwang 和 Chen 的开创性工作提出了一种具有约束方程的无缺陷优化合成方法，以消除 Stephenson III 六杆运动发生器的阶次、电路和分支缺陷。然而，他们提出的三种缺陷的约束方程不完整或不够清晰。在本次讨论中，我们不仅检查了这些故障，而且还提供了正确和完整的约束来消除这三种类型的缺陷。