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.
A new method of modeling how they are created with chemical vapor deposition (CVD) could reduce the cost of carbon nanostructures used for for research and commercial applications, including advanced sensors and batteries.
BMW has already incorporated more than 10,000 3D-printed parts in the Rolls-Royce Phantom and intends to expand the use of 3D printing in its cars even more in the future. Meanwhile, Daimler has started using additive manufacturing for producing spare parts in Mercedes-Benz Trucks.
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.