Automation system and method of manufacturing product using automated equipment

• US 9,720,393 B2
• Filed: 02/27/2014
• Issued: 08/01/2017
• Est. Priority Date: 08/31/2012
• Status: Expired due to Fees

• Current Assignee: P.C. Automax Inc.
• Original Assignee: P.C. Automax Inc.
• Inventors: Cote, Pierre E
• Primary Examiner(s): Shah, Kamini S
• Assistant Examiner(s): Hann, Jay B
• Application Number:
  US14/374,947
• Publication Number:
  US 20160033962A1
• Time in Patent Office: 1,251 Days
• CPC Class Codes: G05B 17/02 electric
• CPC Class Codes: G05B 19/41885 characterised by modeling, simulation of the manufacturing system
• CPC Class Codes: G05B 2219/32342 Real time simulation
• CPC Class Codes: G05B 2219/32385 What is simulated, manufacturing process and compare results with real process
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

An automated control of a system having a plurality of cooperating components involving controlled elements and sensors uses a simulator configured to simulate operation of the components. The simulator stores data representing states of the components and modifies the states over time in accordance with simulated operation of the system. An input module receives data from at least the sensors and updates in the simulator the data representing states of the components. An output module reads from the simulator the data representing states of the components and generates at least controlled element control signals for the controlled elements of the components. The simulator contains a virtual state machine representing the system, and automation of the system is achieved without state machine logic representing the system within the input module and the output module.

Claims

1. An apparatus for automated control of a system having a plurality of cooperating components involving controlled elements and sensors, the apparatus comprising:

a simulator configured to simulate operation of said components, said simulator storing data representing states of said components and configured to modify said states over time in accordance with simulated operation of said system;

an input module receiving data from at least said sensors and configured to update in said simulator said data representing states of said components; and

an output module reading from said simulator said data representing states of said components and configured to generate at least controlled element control signals for said controlled elements of said components,

wherein said simulator contains a virtual state machine representing said system, and automation of said system is achieved without state machine logic representing said system within said input module and said output module,

wherein said simulator comprises;

one or more automated control system component simulators configured to generate said data representing states of said components using a dynamic model of a automated control system component;

one or more product component simulators configured to generate data representing at least one state of a unitary product or component thereof made by said automated control system; and

control logic configured to respond to said data representing said states of components and to said data representing said at least one state of a unitary product or component thereof to generate data representing states of actuators associated with said components,

wherein said control system component simulators and said product component simulators comprise said input module and are configured to receiving data from at least said sensors and to update in said component simulators said data representing states of said components.

2. The apparatus as defined in claim 1, wherein said control logic is configured to:

execute a sequence of logical statements in a predetermined order of priority such that later executed statements have priority for setting states over earlier executed states; and

said output module is configured to control said actuators of said system in accordance with said states as set following executing of all statements, wherein said executing can be continually repeated to control said system to manufacture said product.

3. The apparatus as defined in claim 2, wherein said control logic is configured to provide a non-automated mode of operation, wherein said component and/or said product states further define operator command states, said sequence of logical statements include manual control logical statements, and said executing causes said system to follow operator command.

4. The apparatus as defined in claim 2, further comprising an input device configured to accept operator input to adjust one or more of said component and/or said product states not directly related to data obtained from said sensors, wherein said executing can continue automated operation of said system following said operator input.

5. The apparatus as defined in claim 1, further comprising:

a user interface configured to provide an operator with system operation information, to accept operator input to control system operation, and to accept operator input to disable operation of said input module and said output module and to observe simulated operation of said system.

6. The apparatus as defined in claim 1, wherein said controlled elements include mechanical actuators.

7. The apparatus as defined in claim 1, wherein at least some of said component simulators are configured to adjust parameters of their dynamic model using an analysis over time of said sensor data.

8. The apparatus as defined in claim 7, wherein said component simulators are configured to generate an alarm when adjustment of parameters of their dynamic model exceeds a predetermined threshold.

9. The apparatus as defined in claim 1, wherein said input module is configured to generate an alarm when a difference between said data representing states of said components and a corresponding value determined from said sensor data is greater than a predetermined threshold value.

10. The apparatus as defined in claim 9, wherein said input module is configured to generate said alarm without updating said data representing states of said components.

11. A method of manufacturing a product using automated machinery having system components including actuators and sensors, the method comprising:

recording in a computer signals from said actuators and said sensors during operation of said automated machinery or a simulator of said automated machinery using manual control or a first automated control system;

generating state machines for said components based on said recorded signals;

defining product state machine based on the complete life cycle of a product along the process, preferably including defining a product information path of said product information based on said product path;

wherein said state machines for said components and said product state machines form together simulator logic;

generating, using said recorded signals, automatic command logic for said automated machinery using said state machines for said components and said products, said automatic command logic defining operation of said system components as a function of a state of a group of said components or products or product components handled by said system of components;

generating a user interface for said automated machinery that permits an operator to suspend operation of said automated machinery, change said state of products or product components handled by said system of components, and resume operation of said automated machinery taking into consideration said change;

executing said simulator logic using at least said actuators signals generated during operation of said automated machinery using said first control system to produce test sensor signals;

comparing said test sensor signals with said recorded sensor signals to correct, if required, said simulator logic, said simulator logic being validated;

executing said automatic command logic using as input at least said sensors signals generated during operation of said automated machinery using said first control system to produce test actuator signals;

comparing said test actuator signals with said recorded actuator signals to correct, if required, said automatic logic, said automatic command logic being validated;

connecting at least one processor executing said validated simulator and automatic command logic and said user interface to said system components including said actuators and said sensors; and

controlling said automated machinery to manufacture said product using said validated simulator and automatic command and said user interface.

12. The method as defined in claim 11, wherein said executing and said comparing are performed using signals recorded from said actuators and said sensors during operation of said automated machinery or a simulator of said automated machinery using manual control or a first automated control system, wherein said signals used for said executing and said comparing are different from said signals used for defining said state machines.

13. The method as defined in claim 11, wherein a projection in virtual space of objects handled by an automated system is maintained by said control logic system so as to manage the expected position of the objects within an automated control system.

14. The method as defined in claim 11, further comprising detecting when a sensor is defective and using a simulation of said defective sensor done by said control system logic.

15. The method as defined in claim 11, wherein said state machines use spatial models having a higher spatial resolution that a resolution of sensors in said automated machinery.