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General

Effective BLDC Design Approach

Pi Innovo was responsible for delivering a complete BLDC design including hardware and software for a motor used in an HVAC application. The scope of the program included a full design package, Design Failure Mode and Effect Analysis (DFMEA) and completed Design Verification Plan & Report  (DVP&R).  The timeline for the project was 10 months from project kickoff to completion of project deliverables. The design must:
  • Fit into the customer designed mechanical assembly
  • Operate on either a 12 V system or a 24... View More

LSU 4.9 control using OpenECU

Modern engine controls are increasingly using wide band lambda sensors for air/fuel measurement feedback.  These wideband oxygen sensors offer a typical range of 0.65 to 2.0 lambda as compared to the narrow operational range of a conventional oxygen sensor.  These wide band sensors require dedicated integrated circuits to operate and cannot be read with basic analog input circuits like switching oxygen sensors.  The implementation of a circuit to read a Bosch LSU 4.9 wideband oxygen sensor is described as well... View More