Previous

In aeronautics, Sherpa is concerned by the dynamic control of jet engines: 

  • System engineering: traceability of requirements, validation plan.
  • Functional design: hydraulics, heat exchanges.
  • Software: detailed specifications of the control laws, gas circuit
  • Tests: application and supervision of the tests of experimental systems

Since 2000, Sherpa Engineering performs projects on the Fuel Cell for car manufacturers such as PSA and Renault.

The deep experience of Sherpa in dynamic control is useful for the success of the R&D projects in partnership with PSA and the CEA :

  • design of the architecture of the fuel cell system
  • selection of the elements (compressor, radiator, control valves,...)
  • validation of the selected elements (dynamic simulation)
  • integration of the characteristics of each element
  • dynamic control of the cell system (fuel cell, hydrogen and air circuits, cooling)
  • checking against the requirements
φsim (Multi Physics System Simulation) is a Matlab/ Simulink tool-box for engineers for:
  • modelling dynamic physical systems belonging to several domains
  • manipulating models of physical systems and dynamic control inside a Simulink block-diagramme environment with increased flexibility
  • making easier the maintenance thanks to a limited number of basic polymorphic elements
  • making possible to access complex problems

In the field of metallurgy and steel industry, Sherpa Engineering proposes software solutions and engineering services for designing and revamping of the control systems on site.

Our experience concerns the dynamic control of hot and cold rolling mills, continuous casting, furnaces and strip accumulators.

Our offer aims to: 
  • improve the handling of the controlled variables
  • increase the knowledge thanks to simulators
The libraries of dedicated models are designed for modelling sub-systems having a specific task:
  • power transmission,
  • cooling,
  • air conditioning, …
Developed on the basis of the PhiSim technology, each module allows:
  • studying and validation of the system architecture
  • control system design in a dedicated environment
Oil, chemical and petrochemical plants are typical sectors where Sherpa applies multivariable predictive control with success.

The local dynamic optimization makes the process run closer to its specifications while respecting the constraints.
The pay-out-time is usually shorter than 6 months.

The contribution of the Sherpa Process-Control team is a guarantee of success.
Sherpa Engineering has been involved in powertrain activities for automotive and trucks industries for more than ten years.

The know-how in several research and industrial projects with car manufacturers and their suppliers, in France and abroad, ensured to set up performing tools in modelling and powertrain control domains.

Sherpa proposes a technological support to customer from know-how to technological transfer, according to the requirements:
modélisation et régulation de la qualité de l'eau
 Sherpa performs applications of modelling, Procees Control and optimization in the field of environment (water treatment, waste incineration, etc.).

The picture shows the site of Mery sur Oise in France (Generale des eaux) where sherpa built the model and the dynamic control of the Saturation Index IS of the water.

The model represents the chemical reaction.

The dynamic control of the IS is based on the Model Based Predictive Control technology.
Next

Sherpa Engineering is a SSIS (Service Company for System Engineering©)

Our projects take place in System Engineering gathering the processes of design, production and validation of technical systems. The Sherpa's offer relies on creation and systematic usage of a coherent set of generic models along each step of design cycle. These models, structured and validated through appropriate plant tests, are used for the design of the system. Aiming to industrial efficiency, our offer is for:
  • decreasing the duration and reducing the cost of the projects of our clients
  • enriching the knowledge by capitalising on the experience
Major industrial sectors where Sherpa is operating: