| ELECTRO STANDARDS LABORATORIES Patent applications |
| Patent application number | Title | Published |
|---|
| 20110307232 | COMPUTER READABLE PROGRAM CODE IMPLEMENTING MODELING OF A SYSTEM COMPRISING AT LEAST A LINEAR MOTOR AND A BLOCK SWITCHING CONTROLLER - An article of manufacture is provided having computer readable program code embodied therein which implements modeling of a system (e.g., an electromagnetic aircraft launch system) having at least a linear motor and a block switching controller. The computer readable program code implements the following steps: (a) generating a model of the system, the model having a plurality of sub-models, the plurality of sub-models comprising at least a sub-model of the linear motor and a sub-model of the block switching controller; (b) inserting at least one simulation artifact (e.g., a capacitive element) into the system model between two sub-models, the simulation artifact creating a virtual voltage state; and (c) simulating the operation of the system using the generated model. The insertion of a simulation artifact into the model between sub-models can enable the sub-models to be independently modeled in different reference frames (e.g., the stator abc-reference frame and the dq-reference frame). | 12-15-2011 |
| 20110304286 | BLOCK SWITCH CONTROLLER COMPRISING A CLOSED LOOP VECTOR CONTROLLER INCORPORATING A DELAY STATE HAVING A FEEDBACK GAIN - A block switch controller for a linear motor is disclosed, the linear motor having a plurality of motor blocks, a shuttle which is propelled by the magnetic forces generated by a motor current passing through the motor blocks, a plurality of motor block switches selectively passing the motor current through the motor blocks, and a plurality of position sensors determining the position of the shuttle relative to the motor blocks, wherein the controller comprises a closed loop vector controller that incorporates a delay state having a feedback gain. | 12-15-2011 |
