Consulting
An outside opinion with the authority to be uncomfortable: assessments, architecture reviews, gap analyses and second opinions on decisions that are expensive to reverse.
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Complex systems, intelligent answers
Systems engineering and functional safety
ZETOSON is an independent automotive engineering contractor: ISO 26262 functional safety, systems and requirements engineering, model-based design in Matlab and Simulink, and instrument cluster software. Engaged as a consultant, as a supplier of a fixed work package, or as the person leading a workstream inside your programme — across the European Union.
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Portfolio
Brands we have worked with
- Functional safety lead on an Audi programme, under contract to the supplier delivering it.
- Delivered as a sub-supplier to a supplier on the programme.
- Led the team that built the instrument cluster for the Macan, under contract to the supplier delivering the programme.
- Part of the team behind the seat-belt reminder: occupant and buckle detection, escalation logic and the visual and acoustic warning chain, developed to ISO 26262.
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Who you are hiring
Ten years of ISO 26262 work, in one pair of hands
ZETOSON is Tsvetan Tsvetkov, a systems engineer who has spent more than a decade on the safety and driver-information software of cars built by Audi, Porsche, Volkswagen and Mercedes-Benz — usually under contract to the supplier delivering the programme.
Our services
See how we can optimise your projects
Every engagement below is one of four commercial shapes.
Work package delivery
A defined scope, delivered against your specification, to your process, inside your toolchain — fixed deliverables, agreed acceptance criteria, one party accountable.
Learn moreWorkstream and team leadership
Taking technical responsibility for a workstream inside your programme, including the engineers on it — planning, reviews, escalation and the decisions that cannot wait.
Learn moreEuropean compliance
Getting a product that was not built for the European market through the requirements that apply to it — for manufacturers and suppliers placing goods in the EU.
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How we work
From requirement to validated system
A structured, traceable method that reduces errors, saves costs and accelerates design cycles. Scroll to build the vehicle.
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Analysis and requirements
We understand the system, its context and its constraints. We define clear, measurable and traceable requirements.
- 02
MBSE modelling
We build functional representations with Matlab, Simulink, Stateflow and Simscape.
- 03
Simulation and testing
We validate behaviour with virtual prototypes before physical development.
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Functional safety
We analyse risks and define mitigation measures in line with ISO 26262.
- 05
Documentation and delivery
We document every stage to guarantee traceability and regulatory compliance.
Instrument cluster live
Model-based design
A driveline tested before it is built
Before a single part is machined, the whole vehicle exists as a model: loads, ratios, response times and failure modes are all exercised in simulation.
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Frame and axles
The ladder frame and axle group come first: load paths, weight distribution and the limit each member has to hold.
- 02
Cab and trailer
Packaging follows. Cab, fifth wheel and trailer set the geometry everything else has to live inside.
- 03
Driveline
Engine, gearbox and propshaft become one model: torque, ratios and losses, exercised across the full duty cycle.
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Brake circuit
The pneumatic circuit is simulated end to end, because response time along a sixteen-metre combination is a safety number.
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Vehicle network
The J1939 bus ties it together. Every message has an owner, a rate and a timeout.
Spare wheel located
Systems engineering
Every stage has to work the first time
There is no prototype flight to learn from. The system is verified on paper, in models and on the bench before anything leaves the pad.
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Envelope and budgets
Length, diameter and mass budget come first. Every kilogram added downstream has to be taken from somewhere.
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Structure
Tanks, interstage and fairing: the load path from engine mount to payload, sized for flight loads.
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Propulsion
Engine cluster, turbomachinery and feed lines, modelled together because they fail together.
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Avionics
Guidance, the data bus and the sensors that close every control loop.
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Separation
Staging and fairing jettison: single-shot events verified by analysis, because there is no second attempt.
Engine cluster ignited
Tools and standards we work with
MATLABSimulinkStateflowSimscapeISO 26262MBSEModel-Based DesignRequirements managementMATLABSimulinkStateflowSimscapeISO 26262MBSEModel-Based DesignRequirements management
Connect with ZETOSON
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