Method of determining a switch sequence plan for an electrical system

• US 6,925,427 B1
• Filed: 04/04/2000
• Issued: 08/02/2005
• Est. Priority Date: 04/04/2000
• Status: Expired due to Term

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Montgomery, Thomas Anthony
• Primary Examiner(s): Teska, Kevin J.
• Assistant Examiner(s): GARCIA OTERO, EDUARDO
• Application Number:
  US09/543,028
• Time in Patent Office: 1,946 Days
• Field of Search: 703/13, 703/14, 307/35, 700/11, 701/36
• US Class Current: 703/13
• CPC Class Codes: G06F 30/15 Vehicle, aircraft or watercraft design
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30

Abstract

A method of determining a switch sequence plan for an electrical system includes the steps of identifying switches for the electrical system and organizing the identified switches within a switch group by defining a coincident group of switches to be closed together or a sequential group of switches to be closed one at a time and by defining a duration of time the switches should be closed. The method also includes the steps of organizing the switch group in a data tree structure for the switch sequence plan and traversing the data tree structure recursively to calculate opening and closing times for the switches within the switch sequence plan. The method further includes the steps of generating a simulation command for setting a position sequence of the switches from the opening and closing times for the switch sequence plan and using commands within the switch sequence plan to operatively control the switches in a simulation of the electrical system.

Claims

1. A method of determining a switch sequence plan for an electrical system, said method comprising the steps of:

identifying switches for the electrical system;

organizing the identified switches within a switch group by defining a coincident group of switches to be closed together or a sequential group of switches to be closed one at a time and by defining a duration of time the switches should be closed;

organizing the switch group in a data tree structure for the switch sequence plan;

traversing the data tree structure recursively to calculate opening and closing times for the switches within the switch sequence plan;

generating a simulation command for setting a position sequence of the switches from the opening and closing times for the switch sequence plan; and

using the commands within the switch sequence plan to operatively control the switches in a simulation of the electrical system.

2. A method as set forth in claim 1 including the step of selecting an individual switch or a group of switches from a list displayed on a video terminal of a computer system.

3. A method as set forth in claim 1 wherein said step of organizing the switches within a switch group includes nesting sequential switch groups and coincident switch groups within a top level switch group.

4. A method as set forth in claim 1 including the step of determining a duration of time between switch closings for a sequential switch group.

5. A method as set forth in claim 1 wherein said step of organizing the switch group in a data tree structure includes nesting lower level sequential switch groups or coincident switch groups within higher level sequential switch groups or coincident switch groups.

6. A method as set forth in claim 1 including the step of using the switch sequence plan to analyze an electrical load distribution of the electrical system.

7. A method of determining a switch sequence plan for an electrical system, said method comprising the steps of:

identifying switches from a circuit schematic of the electrical system;

selecting an individual switch or a group of switches from a list displayed on a video terminal of a computer system;

organizing the identified switches within a switch group by nesting within each other a coincident group of switches to be closed together or a sequential group of switches to be closed one at a time;

defining a duration of time the switches in the sequential switch group or coincident switch group should be closed;

organizing the switch group in a data tree structure for the switch sequence plan;

traversing the data tree structure recursively to calculate opening and closing times for the switches in the sequential switch group or coincident switch group for the switch sequence plan;

generating a simulation command for setting a position sequence of the switches within the sequential switch group or coincident switch group from the opening and closing times for the switch sequence plan; and

using the commands within the switch sequence plan to operatively control the switches in a simulation of the electrical system.

8. A method as set forth in claim 7 including the step of determining a duration of time between switch closings for a sequential switch group.

9. A method as set forth in claim 7 wherein said step of organizing the switch group in a data tree structure includes nesting lower level sequential switch groups or coincident switch groups within higher level sequential switch groups or coincident switch groups.

10. A method as set forth in claim 7 including the step of using the switch sequence plan to analyze an electrical load distribution of the electrical system.

11. A method of determining a switch sequence plan for an electrical system, said method comprising the steps of:

identifying switches from a circuit schematic of the electrical system;

selecting an individual switch or a group of switches from a list displayed on a video terminal of a computer system;

organizing the identified switches within a top level switch group by nesting within each other a coincident group of switches to be closed together or a sequential group of switches to be closed one at a time;

defining a duration of time the switches in the sequential switch group or coincident switch group within the top level switch group should be closed;

organizing the top level switch group in a data tree structure for the switch sequence plan by nesting lower level sequential switch groups or coincident switch groups within higher level sequential switch groups or coincident switch groups;

traversing the data tree structure recursively to calculate opening and closing times for the switches within the sequential switch group or coincident switch group within the top level switch group for the switch sequence plan;

generating a simulation command for setting a position sequence of the switches within the sequential switch group or coincident switch group within the top level switch group from the opening and closing times for the switch sequence plan; and

using the switch commands within the sequence plan to operatively control the switches in a simulation of the electrical system.

12. A method as set forth in claim 11 including the step of determining a duration of time between switch closings for a sequential switch group.

13. A method as set forth in claim 11 including the step of using the switch sequence plan to analyze an electrical load distribution of the electrical system.