A Study Of Human-Modeling System And Its Key Techniques For Automotive Ergonomic Design

The automotive ergonomic design is one of the important parts during automobiles design and development. The automotive ergonomic design oriented digital 3-D human-modeling system makes it possible to integrate automotive ergonomic design into the 3-D computer-aided automotive design environment. It will reduce ergonomic redesign count, shorten the developing cycle of bodyworks, and decrease the manufacturing cost of automobile products. Based on database of human dimensions of Chinese adult populations, a human-modeling system for Chinese automotive industry is presented in this thesis. Some key techniques of this system are demonstrated and its prototype is developed. The major research works and creative aspects are outlined as follows.1. First of all, the architectures of major human-modeling systems developed around the world are analyzed. Based on Chinese anthropometric database and automotive industry practice, the architecture of SinoMAN (a new digital 3-D human-modeling system) is put forward, its prototype is established on UGII software platform, its elementary functional modules are developed, and relationships among these modules are also analyzed.2. The methods for making human models of Chinese male and female adult populations in different percentiles are studied. The procedures for data processing and supplements of missing data are discussed. The skeletal and flesh subsystems and their geometric representations are established parametrically, which have functions of real-time manipulations and realistic appearance of human models. In particular, the models for spine, clavicle and shoulder complex are elaborated.3. The movement controls of forward and inverse kinematics for human models are discussed. By means of realizing harmonious movement of skeletal and flesh subsystems of human models, a mixed strategy of movement controls for automotive ergonomic design is put forward. It makes it more efficient and usable to control human models' movements and manipulate their postures. It can be used for the reachability judgement and layout rationalization of components and buttons for driving and controlling.4. The posture recording methods, the comfort of postures and its influential factors are discussed. A procedure for defining postural angles planimetrically and parametrically is presented here. The relationships between postural manipulation and movement control are established. A new method of judging and comparing the comfort of different postures quantitatively is studied and realized.Finally, the main conclusions are made and future study areas are expounded.