System and method for optimizing physical characteristics of a physical device

A system for optimizing structural parameters of a physical device, the system comprising:

• a controller including one or more processors coupled to memory, wherein the memory stores instructions that when executed by the one or more processors cause the system to perform operations including:
• performing a time-forward simulation of a field response in a simulated environment describing the physical device, wherein the simulated environment describes the physical device via a plurality of voxels, wherein each of the plurality of voxels is associated with a structural value to describe the structural parameters, a field value to describe the field response, and a source value to describe an excitation source, and wherein the field response is based, at least in part, on the structural parameters and the excitation source;
• incrementally updating the field value over a plurality of time steps for each of the plurality of voxels to perform the time-forward simulation;
• extracting decomposition components from the field response associated with a performance parameter of the physical device while performing the time-forward simulation;
• computing a loss value based on a difference between the performance parameter at a time step included in the plurality of time steps of the time-forward simulation and a desired performance value;
• backpropagating the loss value from the time step using the decomposition components to determine an influence of changes in the structural parameters of the physical device on the loss value;
• and
• generating a revised description of the physical device by having the structural parameters optimized to reduce the loss value.

A non-transitory computer-readable storage medium having stored thereon instructions which, when executed by one or more processing units, cause the one or more processing units to perform operations comprising:

• performing a time-forward simulation of a field response in a simulated environment describing an electromagnetic device, wherein the simulated environment describes the electromagnetic device via a plurality of voxels, wherein each of the plurality of voxels is associated with a structural value to describe the structural parameters, a field value to describe the field response, and a source value to describe an excitation source, and wherein the field response is based, at least in part, on the structural parameters and the excitation source;
• incrementally updating the field value over a plurality of time steps for each of the plurality of voxels to perform the time-forward simulation;
• extracting decomposition components from the field response associated with a performance parameter of the electromagnetic device while performing the time-forward simulation;
• computing a loss value based on a difference between the performance parameter at a time step included in the plurality of time steps of the time-forward simulation and a desired performance value;
• backpropagating the loss value from the time step using the decomposition components to determine an influence of changes in the structural parameters of the electromagnetic device on the loss value;
• and
• generating a revised description of the electromagnetic device by having the structural parameters optimized to reduce the loss value.