These separate digital and analog control circuits, with a power stage, provide a complete motor-control platform for air-conditioning applications. The platform enables variable-speed sinusoidal-current control and eliminates the need for position sensors. The IRMCF311 or IRMCF312 provides the digital control. A patented Motion Control Engine (MCE) in the unit implements the complex, sensorless permanent-magnet, synchronous-motor algorithm in hardware. In addition, an Analog Signal Engine (ASE) contains all signal-conditioning and conversion circuits, and an application-layer processor defines the operation of the air-conditioning system to control both the ac fan and the compressor motors. Design tools allow controller-performance evaluation and algorithm customization with minimal effort. The IRS2136D 600V, three-phase analog-driver IC includes built-in bootstrap diodes and other features to simplify driving and protect the power stage's insulated-gate bipolar transistors (IGBTs). Packages for the IRMCF3xx are 64- or 100-pin QFPs and for the IRS2136D 28-pin SOICs or a 44-pin PLCCs.
The new composites manufacturing innovation center is intended to be a source of grand challenges for industry, like the kind that got us to the moon under JFK. These aren't the words its new CEO Craig Blue used, but that's the idea and the vision behind the Institute for Advanced Composites Manufacturing Innovation (IACMI).
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.