Inventor

MESSERSMITH DAVID M

US20 patents

⚠️ This page may combine multiple inventors who share the name “MESSERSMITH DAVID M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MESSERSMITH DAVID M

ROCKWELL AUTOMATION TECH INC

System and method for transient-based motor speed estimation with transient excitation

Dual PWM relay driver with diagnostics for functional safety system

Parameter estimation system and method for an induction motor

Switching apparatus and method

Predicting zero-crossings for point-on-wave (POW) switching techniques

Systems and methods for controlling contactor open time

Detecting welded relay contacts using spanner voltage measurement

Detecting welded relay contacts using electrical pulse

Detecting welded relay contacts using contact close time measurement

Systems and methods for detecting welded contacts in a switch system

Systems and methods for detecting welded contacts in an electromagnetic switch system

Systems and methods for dynamically switching a load of a current transformer circuit

LU HAIHUI

Control method and system with feedback indicative of load flux

Method and apparatus for controlling motor torque

Control method and system with feedback indicative of load flux

EATON CORP

DC braking of inverter-driven AC motors

Bumpless rotating start

MESSERSMITH DAVID M

Parameter estimation system and method for an induction motor

Control method and system

ROCKWELL INTERNAT TECHNOLOGIES

System and method for transient-based motor speed estimation with transient excitation