LVDT Sensor Modeling and Signal Conditioning Design
This presentation shows how the VHDL-AMS modeling language can be used to model a “multi-physics” sensor component: A Linear Variable Differential Transformer (LVDT). The model is based on fundamental textbook equations, but it can be characterized to match actual LVDT datasheet specifications. This model is then used to analyze performance trade-offs for various analog and digital signal conditioning circuits and algorithms. These include an analog rectifier/low-pass filter, a digital phase demodulation method, as well as the unique ratiometric algorithm of a commercial AD598 LVDT Signal Conditioning IC. Simulation is used to quantify the degradation effects of a long cable run, between the sensor and the conditioning circuit. Temperature variations cause the cable resistance to change, which generally leads to position measurement errors. Parametric analysis techniques are used to identify the design that is most effective at mitigating these environmental disturbance errors.
A tour of the xtUML methodology demonstrating analysis, design, verification, and code generation in...…View Technology Overview
This segment of the xtUML "How To" Series covers three methods that can be used to create...…View Product Demo
Other Related Resources
White Paper: This paper shows how Model Driven Development can address common challenges in the system design, verification & testing of complex systems and systems of systems. Model Driven Development and virtual...…View White Paper
White Paper: This paper describes a model-driven development approach that leverages modeling efforts to validate functionality and transform high level models into forms that are useful at the next development step....…View White Paper
White Paper: This paper discusses model-driven development (MDD) as the enabler of virtual system integration. MDD dramatically reduces the risks of complex mechatronic system development, increases productivity within...…View White Paper