Optimization-Based Virtual Surface Contact Manipulation at Force Control Rates

Previous interactive works have used springs, heuristics, and dynamics for surface placement applications. We present an analytical technique for kilohertz rate manipulation of CAD models with virtual surface and trimming constraints. The optimization approach allows best placement and sensitivity analysis for mechanical design objectives and parametric domain objectives. Such objectives are not readily incorporated into previous interactive methods. Force feedback is rendered to the user using previously developed haptics principles. Figure 1: OpenGLT M display and PHANToMT M force feedback interaction with a 3 paper clip surface constraint assembly. 1 Motivation CAD research into interactive and optimal surface placement is important for prototyping and design variation analysis. Very often, a designer cannot easily determine the best place and orientation for a surface in his virtual still life portrait or CAD assembly. The best surface configuration for some mechanical design obj...

• Type: Conference
• Year: 2000
• Where: VR
• Authors: Donald D. Nelson, Elaine Cohen
• Keywords: Mechanical Design Objective, Surface Placement, Surface Placement Applications, Virtual Reality, VR 2000