linear production

Actual production to a level schedule, so that a plotting of actual output versus planned output forms a straight line, even when plotted for a short segment of time.

Mathematical models for solving linear optimization problems through minimization or maximization of a linear function subject to linear constraints. For example, in blending gasoline and other petroleum products, many intermediate distillates may be available. Prices and octane ratings as well as upper limits on capacities of input materials that can be used to produce various grades of fuel are given. The problem is to blend the various inputs in such a way that (1) cost will be minimized (profit will be maximized), (2) specified optimum octane ratings will be met, and (3) the need for additional storage capacity will be avoided.

1) The balancing of the assignment of the tasks to workstations in a manner that minimizes the number of workstations and minimizes the total amount of idle time at all stations for a given output level. In balancing these tasks, the specified time requirement per unit of product for each task and its sequential relationship with the other tasks must be considered. 2) A technique for determining the product mix that can be run down an assembly line to provide a fairly consistent flow of work through that assembly line at the planned line rate.

A measure of actual work content versus cycle time of the limiting operation in a production line. Line efficiency (percentage) is equal to the sum of all station task times divided by the longest task time multiplied by the number of stations. In an assembly line layout, the line efficiency is 100% minus the balance delay percentage.

The physical transportation of inventory from one location to another within a facility. Movements are usually made under the direction and control of the inventory system.

In a Just-in-Time context, a card or other signal indicating that a specific number of units of a particular item are to be taken from a source (usually an outbound stockpoint) and taken to a point of use (usually an inbound stockpoint). It authorizes the movement of one part number between a single pair of work centers. The card circulates between the outbound stockpoint of the supplying work center and the inbound stockpoint of the using work center. Syn: move signal. See: kanban.