David W Carnegie

Title: David W Carnegie: Innovator in Torque Measurement Technology

Introduction

David W Carnegie is a notable inventor based in Valparaiso, IN (US). He has made significant contributions to the field of technology, particularly in the measurement of torque in hard disk drive actuators. His innovative approach has led to the development of a unique method that enhances the accuracy of torque measurement.

Latest Patents

David W Carnegie holds a patent for a "Method and system to measure torque per unit current as a function of angle in hard disk drive actuators." This patent describes a method and apparatus for calculating a torque constant, K, of an actuator for a computer disk drive. The process involves passing the actuator through a magnetic field and measuring the induced change in potential. A stepper motor moves the coil through the magnetic field, and a fluxmeter measures changes in flux. The measurements are synchronized using an encoder, which commands a digital multimeter to sample the fluxmeter. By passing the actuator in both forward and reverse directions, the contribution based on voltage integrator drift is minimized. This method is designed to be unaffected by mechanical effects such as friction or torque from current-carrying leads.

Career Highlights

David W Carnegie is associated with Ugimag, Inc., where he applies his expertise in innovative technologies. His work has been instrumental in advancing the capabilities of hard disk drive actuators, contributing to the efficiency and performance of data storage devices.

Collaborations

One of his notable coworkers is James H Wise, with whom he has likely collaborated on various projects within the company.

Conclusion

David W Carnegie's contributions to torque measurement technology exemplify the spirit of innovation in the field of computer engineering. His patent reflects a significant advancement that enhances the functionality of hard disk drives.