engineering

Robotic paradigm

Robotic paradigm is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Robotic paradigm rather than just read about it. In short: In robotics, a robotic paradigm is a mental model of how a robot operates. A robotic paradigm can be described by the relationship between the three basic elements of robotics: Sensing, Planning, and Acting.

Key takeaways

Robotic paradigm belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Robotic paradigm to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Robotic paradigm from memory before moving on to harder problems.

Reference excerpt

In robotics, a robotic paradigm is a mental model of how a robot operates. A robotic paradigm can be described by the relationship between the three basic elements of robotics: Sensing, Planning, and Acting. It can also be described by how sensory data is processed and distributed through the system, and where decisions are made.

Hierarchical/deliberative paradigm The hierarchical or deliberative paradigm describes a top-down control structure in which the robot's actions are driven by explicit planning. The robot follows a sense-plan-act sequence. At each step, it collects sensory information, updates an internal model of the world and determines the next action based on the model.

The robot operates in a top-down fashion, heavy on planning. The robot senses the world, plans the next action, acts; at each step the robot explicitly plans the next move. All the sensing data tends to be gathered into one global world model.

The reactive paradigm The reactive paradigm describes a bottom-up control structure in which the robot's actions emerge from direct interactions between the robots sensors and behaviours, without relying on a central plan or world model. Sense-act type of coupling. The robot can have multiple instances of Sense-Act couplings. These couplings are concurrent processes, called behaviours, which take the local sensing data and compute the best action to take independently of what the other processes are doing. The robot will do a combination of behaviours.

Hybrid deliberate/reactive paradigm The hybrid paradigm combines elements of both the behaviours and reactive approaches. The robot first plans (deliberates) how to decompose a task into smaller subtasks and selects suitable behaviours to accomplish each one. Once planning is complete, these behaviours execute concurrently following the reactive paradigm.

The robot first plans (deliberates) how to best decompose a task into subtasks (also called “mission planning”) and then what are the suitable behaviours to accomplish each subtask. Then the behaviours starts executing as per the Reactive Paradigm. Sensing organization is also a mixture of Hierarchical and Reactive styles; sensor data gets routed to each behaviour that needs that sensor, but is also available to the planner for construction of a task-oriented global world model.

See also Behavior-based robotics Hierarchical control system Subsumption architecture

References Asada, H. & Slotine, J.-J. E. (1986). Robot Analysis and Control. Wiley. ISBN 0-471-83029-1. Arkin, Ronald C. (1998). Behavior-Based Robotics. MIT Press. ISBN 0-262-01165-4.

Illustrations

Robotic paradigm: Reactive Paradigm schema — Reactive Paradigm schema

Robotic paradigm: Hybrid Deliberate/Reactive Paradigm schema — Hybrid Deliberate/Reactive Paradigm schema

Worked examples

Example 1 — a first encounter with Robotic paradigm

Start with the simplest possible case. Write down what Robotic paradigm claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Robotic paradigm before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Robotic paradigm ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Robotic paradigm

In research: Robotic paradigm appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Robotic paradigm in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Robotic paradigm is common in secondary-school and first-year university syllabi. It links to neighbouring topics Robot architectures, so understanding it makes those chapters shorter.
In everyday life: Look for Robotic paradigm outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Robotic paradigm in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Robotic paradigm means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Robotic paradigm out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Robotic paradigm in simple terms?

Why does Robotic paradigm matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Robotic paradigm?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Robotic paradigm.