【正文】 學”，使其設計學的發(fā)展已達到相當規(guī)模；美國成立了“設計委員會”；日本同樣也非常重視設計技術(shù)的發(fā)展，將設計看作是技術(shù)、經(jīng)濟、美學和人機工程學的一體化整體，并極力推廣和采用新技術(shù)。沒有形成合理的設計人員梯隊，產(chǎn)品仍然是幾十年不變樣，目前仍以照抄照搬為生存方式，沒有自己的知識產(chǎn)權(quán)，只是在應付低價拿來的合同。國內(nèi)的許多學者也對這一課題進行了數(shù)年的研究，提出了DFC 和DTC 的研究模式，完成了全方位分析比較的單臺和系列起重機設計水平和設計目標成本的綜合評價體系。 智能設計技術(shù)各主要工業(yè)發(fā)達國家正從傳統(tǒng)的CAD 技術(shù)不斷向智能CAD（ICAD）和人機智能化設計系統(tǒng)方向發(fā)展，電氣控制系統(tǒng)自分析、自調(diào)整、自糾錯的智能化水平不斷提高，使得起重機的設計和使用全過程的自動化和智能化得以實現(xiàn)。 快速設計技術(shù)極短交貨期的市場需求要求開展基于網(wǎng)絡的協(xié)同（異地）設計技術(shù)、并行工程技術(shù)研究，這樣可以縮短產(chǎn)品的開發(fā)周期。僅將優(yōu)化設計的范圍局限于優(yōu)化方法及其應用程序的編制上已不能適應當代起重機技術(shù)發(fā)展的需要，只有全局優(yōu)化才是現(xiàn)代起重機的優(yōu)化，廣義的優(yōu)化設計應是優(yōu)化設計的重要發(fā)展方向，其內(nèi)容主要包括工程優(yōu)化設計問題的自動建模技術(shù)、優(yōu)化設計問題的前處理與后處理、優(yōu)化設計結(jié)果的評價等。 廣義優(yōu)化技術(shù)和全過程的優(yōu)化設計起重機廣義優(yōu)化技術(shù)的研究將使得人們能夠從模型的建立、處理、一直到優(yōu)化結(jié)果顯示等全過程進行優(yōu)化。做到產(chǎn)品成本的即時反應，通過設計方案的調(diào)整實現(xiàn)設計階段控制產(chǎn)品成本的真實實現(xiàn)。數(shù)字化樣機的仿真設計對大型復雜起重機產(chǎn)品的方案評審、機構(gòu)動作原理審查、結(jié)構(gòu)干涉檢查等具有十分重要的現(xiàn)實意義。德國學者提出了成本結(jié)構(gòu)和分類，用相對成本概念來實現(xiàn)不同設計方案之間的對比評價，同時利用設計方法學和控制成本的設計思想研究成本特征與設計特征之間的轉(zhuǎn)化，提出了面向用戶的目標成本核算法；美國學者（在面向報價方面）對已有或生產(chǎn)過的產(chǎn)品作回歸統(tǒng)計的結(jié)果，建立了成本模型；日本、瑞士、英國等學者也均對制造階段的成本估算進行了較多的研究。同時將計算機應用技術(shù)引入設計領(lǐng)域，對起重機設計工作的發(fā)展起了很大的推動作用。設計工作從來都不是孤立存在的，由此產(chǎn)生了相關(guān)的技術(shù)和管理問題：從PDM、CAPP、ERP、PLM 到CRM 的全過程閉環(huán)反饋信息管理；從設計、工藝、制造、安裝、調(diào)試到運行的全過程信息化管理；面向企業(yè)異地協(xié)同設計與制造的MVPN 的研究；基于CPC 和MVPN 的快速設計與制造一體化系統(tǒng)；專利技術(shù)的大量涌現(xiàn)及知識產(chǎn)權(quán)保護問題。根據(jù)現(xiàn)實和發(fā)展，設計手段越來越體現(xiàn)出精確化、自動化、虛擬化與快捷的特點。 review of agency action principle, the structure interference check is of great practical significance. At the same time in the puter virtual reality system (VRS) in the virtual design environment (VD) for technical studies also began to receive attention. Intelligent designThe major industrial countries are from traditional CAD technology continues to intelligent CAD (ICAD) and the direction of manmachine intelligent design system, electrical control system from the analysis, selfadjusting, selfcorrection, intelligent level increased, which make cranes the whole process of design and use of automation and intelligence can be achieved. Optimal Design of GeneralizedHome about numerical optimization techniques applied to engineering design early 70s, and the current discrete and random variable optimization, structural optimization, intelligent optimization, optimization modeling and optimization of plex systems research methodology has been made in the fields of theory and a considerable level of application of the results, But extended to the forward modeling, processing model, backward extended to the whole process of optimization results show that lack of research indepth and prehensive, and there is a certain gap between the major industrial countries. China crane design parameters on the sensitivity analysis and optimization of the specific application of generalized also achieved initial success.3 Objectives and key content and direction TargetResearch and product innovation to grasp the theory and method, and applied to a number of focused product design, improve product design capability and level of integrated, so that crane products in the product quality, price, delivery and function of type (shape color) and so on to meet the evolving needs of users, in the fierce market petition take more share. Main contents Innovative design techniquesType carried out on the crane drive innovation, structures and functions of innovation theory and technology innovation base in theoretical research, we analyze the new material, new techniques, new gear, and thus through the optimization of different design, deposition and bination to produce a new design, has introduced a new innovative design results transmission. Cost designIn the product design process costoriented design techniques and technologies in parallel cost estimate is critical to product cost reduction, The focus is to study the cost structure analysis and value engineering analysis techniques, and the need to construct a variety of specific design knowledge base and cost data to accurately estimate the cost of parallel. Immediate response to achieve product cost through design adjustments to control the product design stage to achieve the true cost of implementation. Innovation does not always equal to the higher costs to the invention with new ponents, use standard ponents, and even standard parts and purchased parts also can be bined into a new product, which is an innovation. Rapid Design TechnologyMarket demand for very short delivery time requirement to carry out webbased collaboration (offsite) design, concurrent engineering technology, this can shorten the product development cycle. Among them, the series modular design, artificial intelligence, product design expert system technology and virtual