# US 11,113,437 B2 · Joint hardware and controller design

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- Number: US 11,113,437 B2
- Document ID: US11113437B2
- Status: Granted
- Kind: B2
- Application number: 16/086,089
- Filed: 2017-09-30
- Published: 2020-09-24
- Granted: 2021-09-07
- Earliest claimed: 2017-09-30
- Assignees: Siemens Aktiengesellschaft
- Applicants: Siemens Aktiengesellschaft
- Inventors: Ulrich Münz; Edward Slavin, III
- Web page: https://patentgrep.com/patent/US11113437B2

## CPC

- G06F 30/20: Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30)
- G06F 30/23: using finite element methods [FEM] or finite difference methods [FDM]
- G06F 30/12: characterised by design entry means specially adapted for CAD, e.g. graphical user interfaces [GUI] specially adapted for CAD
- G06F 2111/06: Multi-objective optimisation, e.g. Pareto optimisation using simulated annealing [SA], ant colony algorithms or genetic algorithms [GA]
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A method for designing a product comprising physical hardware and a controller for controlling the physical hardware includes generating a detailed hardware model describing the physical hardware and a controller model corresponding to the controller based on a set of user requirements. An optimal design of the physical hardware and the controller is determined by solving a multi-objective optimization problem comprising a first objective function defining hardware design objectives, and a second objective function defining objectives for the controller model for the physical hardware.

## Claims

### Claim 1

A system for designing a product comprising physical hardware and a controller for controlling the physical hardware, wherein the system comprises:
a computer-readable medium comprising a detailed hardware model corresponding to the physical hardware and a controller model corresponding to the controller;
a receiver module configured to receive one or more user requirements via a user input device;
an optimization module configured to jointly optimize the detailed hardware model and the controller model over a plurality of iterations, wherein each iteration comprises (i) optimizing of the detailed hardware model with respect to the one or more user requirements; (ii) matching the detailed hardware model to a reduced order model of the detailed hardware model; and (iii) optimizing the controller model with respect to the reduced order model of the detailed hardware model.

### Claim 2 (depends on 1)

The system of claim 1, wherein the optimization module jointly optimizes the detailed hardware model and the controller model using a process comprising:
determining an optimal design of the physical hardware and the controller by solving a multi-objective optimization problem comprising:
a first objective function defining hardware design objectives,
a second objective function defining objectives for the controller model for the physical hardware, and
a third objective function that minimizes the differences between the reduced order model of the detailed hardware model and the detailed hardware model.

### Claim 3 (depends on 2)

The system of claim 2, wherein the detailed hardware model is a finite element model of the physical hardware.

### Claim 4 (depends on 3)

The system of claim 3, wherein the reduced order model of the detailed hardware model is a low-order linear model obtained through reduction of the finite element model of the physical hardware.

### Claim 5

A method for designing a product comprising physical hardware and a controller for controlling the physical hardware, wherein the method comprises:
generating a detailed hardware model corresponding to the physical hardware and a controller model corresponding to the controller;
receiving one or more user requirements via a user input device;
jointly optimizing the detailed hardware model and the controller over a plurality of iterations, wherein each iteration comprises (i) optimizing of the detailed hardware model with respect to one or more user requirements; (ii) matching of the detailed hardware model to a reduced order model of the detailed hardware model; and (iii) optimizing the controller model with respect to the reduced order model of the detailed hardware model.

### Claim 6 (depends on 5)

The method of claim 5, wherein the optimization module jointly optimizes the detailed hardware model and the controller model using a process comprising:
determining an optimal design of the physical hardware and the controller by solving a multi-objective optimization problem comprising:
a first objective function defining hardware design objectives,
a second objective function defining objectives for the controller model for the physical hardware, and
a third objective function that minimizes the differences between the reduced order model of the detailed hardware model and the detailed hardware model.

### Claim 7 (depends on 6)

The method of claim 6, wherein the detailed hardware model is a finite element model of the physical hardware.

### Claim 8 (depends on 7)

The method of claim 7, wherein the reduced order model of the detailed hardware model is a low-order linear model obtained through reduction of the finite element model of the physical hardware.

### Claim 9 (depends on 5)

The method of claim 5, wherein generating the detailed hardware model comprises:
using an optimization of the reduced order model is used to minimize an error between the detailed hardware model and the reduced order model.