摘要:
A system and method for self-synchronization of modular production systems having components with various alternative capabilities for processing and transporting work units along transport highways, for various component/transport highway configurations. The method includes determining jobs of interest, with each job requiring the production of at least one work unit. The configuration of the components, including at least one machine module, and the transport highway is determined. Each component duration time is determined and a default self-synchronization time is identified. The default self-synchronization time is optimized by adjusting not less than one component duration time.
摘要:
Respective coordinators are spawned or activated to coordinate activities with regard to respective tasks. Where the respective tasks require cooperative efforts of a plurality of controllers, the respective coordinators ensure cooperative efforts by generating and communicating cooperative commands to the plurality of controllers. The coordinators may act as clearinghouses for system data, selectively requesting and relaying system information to appropriate controllers. For example, a document processing system activates respective coordinators for respective sheets of print media. The respective coordinators orchestrate the transportation of the sheets by sequentially orchestrating the activities of sequentially selected pluralities of transportation actuator controllers. Selected sheet position information from sensors and/or from models maintained by the actuator controllers may be relayed by the coordinators to selected actuator controllers as appropriate to the sheet transportation tasks.
摘要:
For an automated manufacturing system having a number of modules with numerous alternative capabilities, a computer-controlled system provides for configuration-specific reprioritization of jobs. The computer-controlled system includes at least one system controller for planning and scheduling utilization of selected module capabilities in the production of jobs having not less than one work unit. Module capabilities include the relative costs of the module capabilities.
摘要:
A modular object handling system has a multi-level control architecture, which includes a system controller that coordinates the functions and/or operations of individual module controllers, that in turn control corresponding actuators, to provide a desired system function. The system controller performs the overall trajectory planning by taking the constraints of each of the module actuators into account. The system controller may compensate for deviations of objects from their planned trajectories by contemporaneously redetermining trajectories and trajectory envelopes to encode the various combinations of the system constraints and task requirements. The trajectory envelopes can denote regions around other trajectories to indicate control criteria of interest, such as control and collision boundaries. However, by predetermining the trajectories and trajectory envelopes, and comparing the current state of an object with the predetermined trajectory envelopes, the system controller can even more quickly determine the extent to which the state satisfies the criteria. Thus, this system simplifies on-line determinations to merely include a comparison between a particular object, a particular trajectory and the corresponding trajectory envelope. It is also desirable to predetermine multiple trajectories, as well as trajectory envelopes associated with each of the multiple trajectories, for each object. The apparatus and methods of the invention can then monitor the status of each object, and switch between the multiple predetermined trajectories in order to actively improve energy usage efficiency. The apparatus and methods can also modify the trajectories of other objects to avoid collisions with the object whose trajectory was originally switched. Other exemplary embodiments of the invention include determining the multiple trajectories, as well as the trajectory envelopes associated with each of the multiple trajectories, by taking various requirements of the trajectory envelopes into account.
摘要:
A modular object handling system has a multi-level control architecture, which includes a system controller that coordinates the functions and/or operations of individual module controllers, that in turn control corresponding actuators, to provide a desired system function. The system controller performs the overall trajectory planning by taking the constraints of each of the module actuators into account. The system controller may compensate for deviations of objects from their planned trajectories by contemporaneously redetermining trajectories and trajectory envelopes to encode the various combinations of the system constraints and task requirements. The trajectory envelopes can denote regions around other trajectories to indicate control criteria of interest, such as control and collision boundaries. However, by predetermining the trajectories and trajectory envelopes, and comparing the current state of an object with the predetermined trajectory envelopes, the system controller can even more quickly determine the extent to which the state satisfies the criteria. Thus, this system simplifies on-line determinations to merely include a comparison between a particular object, a particular trajectory and the corresponding trajectory envelope.
摘要:
An electronic image processing apparatus has a controller and a plurality of resources in an arbitrary configuration. Each of the resources includes an associated processor storing data related to operational constraints of the associated resource and a bus interconnects the processors to the controller for directing the operation of the resources. The controller is adapted to operate independent of a particular configuration of the plurality of resources by receiving from each of the processors the data related to the operational constraints of each associated resource and interrogating each of the processors to determine the geometrical relationship of the interconnection of the resources. The controller then responds to the data related to the operational constraints of each of the processors and to the geometrical relationship of the interconnection of the resources to dynamically configure the image processing apparatus to operate in accordance with the the operational constraints of each of the processors and to the geometrical relationship of the interconnection of the resources.
摘要:
A combinatorial search method implemented in a computer control system utilizes on-line state-space planning of operations for multi-step production processes. The planner considers various possible combinations of actions, searching for one that correctly transforms the initial state of the object into the specified desired final state. Each combination of actions the planner considers is called a search node, with each node containing a plan representing a series of actions of various machines on a single object and also containing the predicted state of the object with those actions applied either forward or backward. The method includes determining which of the search nodes to extend further at each search iteration and if the object state in the chosen search node conforms to the desired state of the object, or whether actions should be added to the node's plan. Actions that are applicable to the chosen node's object state are selected, transformations are applied to the attributes, and the resulting plan is returned to the system.
摘要:
A method for performing exception handling operates within a computer controlled multi-step production system for producing objects. The system includes a system controller, within which reside a planner/scheduler and module controller(s). The system controller receives a stream of object specifications for objects to be produced including the jobs to which they belong. The planner/scheduler plans and schedules the jobs incrementally, and the system controller sends commands to the module controller(s) directing production of the planned and scheduled objects by production system modules. The method includes receiving notice in the system controller of a problem situation present within the multi-step production system and halting planning for the production of subsequent objects. Plans are canceled plans for all objects that have not begun production, and all objects affected by the problem situation are marked as bad objects. The system controller planned exception handling/recovery or module controller directed exception handling/recovery is applied and normal operation is resumed.
摘要:
In a problem partitioning method for problem solving in a computer system, a definition of a system to be controlled, a hierarchical control structure definition, problem definitions for a plurality of control nodes in the hierarchical control structure, and a structure evaluation function are used in partitioning the system problem. The partitioning method defines an instantiation of the hierarchical control structure by decomposing the system into a plurality of hierarchical control structure instances, with each control structure instance having a plurality of control levels. The performance of each of the hierarchical control structure instances is evaluated with the structure evaluation function and an optimal hierarchical control structure instance is selected.
摘要:
A method implemented in a computer control system utilizes temporal constraints to coordinate multiple planning sessions for multi-step production processes such that scheduling constraints are satisfied and flexibility for individual job planning is retained. The computer control system includes an outer planner loop module, which manages the queue of planned and unplanned jobs and interacts with the computer control system, and an individual job planner. The method includes checking the queue of planned jobs for imminent planned jobs, performing a temporal clamping process for planned jobs scheduled to begin soon, and releasing planned jobs for production. Checking is performed for additional imminent planned jobs and the individual job planner is called to produce a plan for the next job if no imminent planned jobs are identified. A plan is produced for the next job by the individual job planner.