大仰角俯仰机构布局方案优化方法及应用  

Reseach on Method and Application of Layout Scheme Optimization for Large Angle Pitching Mechanism

作　　者：方子帆[1,2] 高术[1] 周刚[1] 张毅敏[3] 黄朝学[3] 何孔德[1] 

机构地区：[1]三峡大学机械与动力学院,河北宜昌443002 [2]三峡大学水电机械设备设计与维护湖北省重点实验室,河北宜昌443002 [3]中国船舶重工集团公司第七一○研究所,河北宜昌443003

出　　处：《机械设计与研究》2015年第1期17-21,共5页Machine Design And Research

摘　　要：为解决大仰角俯仰机构布局方案的优化问题,以始末状态中俯仰传动油缸最大作用力和近似功率的加权函数最小为优化目标,考虑空间铰点位置、机构传动角、俯仰传动油缸稳定性等约束条件,建立了其优化方法数学模型,利用复合形法算法编写了MATLAB优化程序。提出了基于优化设计数据构建产品原理性样机,并利用虚拟样机技术进行产品性能评价的方法。以某型装置为算例进行优化设计,获得其大仰角俯仰机构布局方案优化数据,与作图法相比,优化后:俯仰传动油缸作用力的压力峰值与拉力峰值基本持平且最大作用力降低了28%,功率正负分布更为均衡且变化范围减小,俯仰机构最小传动角提高了30%。所建立的大仰角俯仰机构优化方法数学模型及设计数据评价方法可以应用于其他机械装备概念创新设计中。In order to solve the optimization of high elevation pitching mechanism layout scheme, the weighted function of the hydraulic cylinder maximum force in the initial and final state and the minimum approximation power was taken as the optimization target, considering the constraints of joint space position, transmission angle and the hydraulic cylinder stability, the mathematical model of optimization design is established. The optimization program is written in MATLAB with the complex algorithm. The method constructing the prototype of product principle based on optimization design data and evaluating the product performance based on virtual prototyping technology was put forward. The optimization data of high elevation pitching mechanism was gained by the optimization design method for a certain device. Compared to the mapping method, after the optimization： the hydraulic cylinder maximum force reduces 28 % , and two peak values of the force curve are the same; the hydraulic cylinder power consumption is reduced, and the power distribution of positive and negative are more balanced; the minimum transmission angle increases 30%. The mathematical model of optimization design and the method to evaluate design data for high elevation pitching mechanism can be applied to creative concept design for other mechanical equipments.

关 键 词：俯仰机构 布局方案 优化设计 数据评价 大仰角 

分 类 号：TH113[机械工程—机械设计及理论]