Search results
- something that controls what you do by keeping you within particular limits:
dictionary.cambridge.org › dictionary › english
People also ask
What are optimal control constraints?
What are point constraints?
What is a constraint in business?
What is the theory of constraints?
Control Constraint. Constraints control the size and position of the new feature. From: Product Design Modeling Using CAD/CAE, 2014
Abstract. An ubiquitous problem in control system design is that the system must operate subject to various constraints. Although the topic of constrained control has a long history in practice, there have been recent significant advances in the supporting theory. In this chapter, we give an introduction to constrained control.
- Graham C. Goodwin, Tristan Pérez, José A. De Doná
- 2003
- Introduction
- The Six Constraints
- How to Use The Six Constraints Model
- Where The Six Constraint Model Fits Into The PMBOK® Guide
- Next Steps
For many years project managers have been encouraged to look to the Triple Constraints to provide a framework to plan, monitor and control a project. In its Glossary, A Guide to the Project Management Body of Knowledge (PMBOK® Guide) defines the Triple Constraint as “a framework for evaluating competing demands.” (PMI, 2004, p. 378) These Triple Co...
Time and Cost
These are considered the standard constraints. They are reflected in our estimates and presented as ranges (plus-or-minus). In PRINCE2™ terms, as long as we are operating (delivering our projects) inside that agreed range limit, we are considered on-target. Good project management practice requires us to provide ranges for these constraints – ranges representing the estimating uncertainties associated with a project's particular circumstances. (PRINCE2™ separates these estimating uncertaintie...
Scope
Scope doesn't have the same ease of definition – ie, as normally being defined through “ranges”. Scope refers to the particular deliverables (“products” in PRINCE2™ terminology), which have been agreed to by the project's owners. In most cases there are no “ranges of acceptability” for scope: we asked for particular items, and we expect to get them – neither more nor less. We can, however, represent scope as a range, and it might look like the following. I typically would ask the project mana...
Quality
The quality constraint (or “quality tolerance”) is actually quite similar to that of scope – except that quality focuses on characteristics of a deliverable. When we address quality we are not looking to add (or delete) a new item. We are only looking to alter or provide flexibility (or “breathing space”) for some feature of an already-defined item – or to assure that a particular characteristic is present and working properly (quality checking). Here's an example. If I am building you a cust...
We use the constraints model to help us control the project. Building on the examples we have provided above, the project manager with the sponsor/ stakeholders/ Project Board (Project Boards are how PRINCE2™ clarifies the sponsor role and responsibilities) establish what the project's (and phase/ stage) limits are in these six key areas. (Benefits...
Even though it defines the Triple Constraint as “a framework for “evaluating competing demands,” the PMBOK® Guide makes no specific reference as to how or when to applythe Triple Constraint to do just that. It is clear, though, that application of the constraints/ tolerances occurs in 2 key points in the PMBOK® Guide's process flow. The first is in...
The next time you work on a project – or observe a project others are working on – think about these six constraints. Consider the assumptions and the decisions that are made about the six without their being discussed. Think, then, about how a clear discussion of these six constraints would allow better control of the project's key elements from a...
The Theory of Constraints is a methodology for identifying the most important limiting factor (i.e., constraint) that stands in the way of achieving a goal and then systematically improving that constraint until it is no longer the limiting factor. In manufacturing, the constraint is often referred to as a bottleneck.
Feb 19, 2021 · The point constraints are expressed as functions of the states at the end point or some intermediate interior points of the time horizon. Download chapter PDF. 9.1 Introduction. In real world, optimal control problems are often subject to constraints on the state and/or control.
- Kok Lay Teo, Bin Li, Changjun Yu, Volker Rehbock
- 2021
While constraint and control are often used interchangeably, they have distinct meanings and implications. Constraint refers to limitations or restrictions that are placed on a system or process, while control involves the ability to influence or direct behavior.
Mar 20, 2024 · Theory of Constraints (TOC), a process improvement approach that aims to improve the performance and profitability of any system by identifying and eliminating the “constraint” that limits its output, throughput, and goal achievement.
