Development and production of rotational angle and position sensors (Rotasyn resolvers, RVDT) for extreme environments

Admotec Precision AG

Zürich (Kieselgasse 12, CH-8008)New on Amplifa

1987Founded

ZürichDevelopment and production location

AGLegal form (Switzerland)

20–290 mmComponent size (standard resolver outer diameter)

About Admotec Precision AG

Admotec Precision AG, based in Zürich, was founded in 1987 and develops, designs, produces and distributes motion and position sensors for original equipment manufacturers. The core product is the Rotasyn resolver with a solid full-metal rotor without insulation and without coils on the rotor, complemented by RVDT and brushless resolver solutions for absolute angle measurement over 360°. The sensors use PTFE or Kapton insulation and are nearly insensitive to temperature in the range of –200 °C to +250 °C. In addition to standard sizes (outer diameter 20–290 mm), Admotec offers customer-specific versions with special windings, special housings, air gaps up to 1 mm, external rotors and multipole versions from 8 pole pairs. Manufacturing includes chip-on-board and die-attach technology, electron beam and laser welding, and hermetically sealed sensors; resolver test benches and complete sensor-to-digital output solutions round out the offering. Customers come from aerospace, e-mobility, robotics, nuclear power and research, oil drilling, shipbuilding and motorsport; references include Airbus, Safran, Ariane, Williams, Renault, Parker, Wittenstein, UTC and AREVA.

Site: Zürich
Processes: Electron beam welding (e-beam welding), Laser welding (laser welding), Chip-on-board and die-attach technology, Development, design and production of rotational angle/position sensors (Rotasyn resolvers, RVDT,, Manufacture of hermetically sealed resolvers/RVDTs (hermetical units), Resolver test benches / sensor testing (resolver measuring benches, complete, Customer-specific modification of standard resolvers (special sizes, electrical parameters,, Development of customer-specific resolver/RVDT solutions (custom engineering)
Materials: PTFE (insulation material), Kapton (insulation material), Full-metal rotor (exact alloy not specified), PTFE insulation, Kapton insulation, Full-metal rotor
Certificates: ISO 9001:2015, EN 9100
Founded: 1987
Industries: Aerospace, E-mobility / Automotive, Industrial Automation / Robotics, Nuclear power and research, Nuclear power plant decommissioning, Oil drilling

01
Custom engineering and application analysis
02
Design and prototype development
03
Winding assembly with PTFE/Kapton insulation
04
Chip-on-board and die-attach
05
Electron beam and laser welding
06
Hermetic encapsulation/housing
07
Testing on resolver test bench
08
Series production and sales

Materials and Insulation Materials

PTFE

PTFE insulation

Insulation material of the windings for use at temperatures from –200 °C to +250 °C.

Kapton

Kapton insulation

Alternative insulation film of the Rotasyn windings with high temperature resistance.

Vollmetall-Rotor

Full-metal rotor

Riveted rotor without insulation and without coils, twice the MTBF compared to brushless resolvers.

Locations

Zürich

Headquarters, development, sales and production

Materials: Metal, PTFE, Kapton

Resolver test bench

Components and Products

**Rotasyn standard resolvers (sizes 08–290)**Full-metal rotor · Aerospace, robotics, e-mobility

Inside the production

Admotec – Precise rotational angle and position sensors

Industries

AerospaceE-mobility / AutomotiveIndustrial Automation / RoboticsNuclear power and researchNuclear power plant decommissioningOil drillingShipbuildingF1 motorsport and sports cars

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
Electron beam welding (e-beam welding)Joining	–	–	–	–	Metal
Laser welding (laser welding)Joining	–	–	–	–	Metal
Chip-on-board and die-attach technologyAssembly	–	–	–	–	–
Development, design and production of rotational angle/position sensors (Rotasyn resolvers, RVDT,Engineering	–	–	–	–	Metal, PTFE, Kapton
Manufacture of hermetically sealed resolvers/RVDTs (hermetical units)Assembly	–	–	–	–	–
Resolver test benches / sensor testing (resolver measuring benches, completeTesting	Resolution 12–16 bits (RDC), typ. accuracy 10–40 arcminutes	–	–	–	–
Customer-specific modification of standard resolvers (special sizes, electrical parameters,Engineering	Air gap up to 1 mm	–	–	–	–

1 Anlagen & Maschinen

Machine	Manufacturer / model	Quantity	Working area	Year built	Site
Resolver test bench (test stand for resolvers/sensors)	–	–	–	–	Zürich (Kieselgasse 12, CH-8008 Zürich)

Additional services

Development of customer-specific resolver/RVDT solutions (custom engineering)Prototype development, testing and series productionChip-on-board and die-attach technologyE-beam and laser weldingResolver test benchesComplete solution from sensor to digital outputHermetically sealed sensors

Reference customers

AirbusWilliamsRenaultParkerWittensteinSafranArianeUTCAREVA

Quality and Certification

The quality management system for the development, sales and production of sensors for aerospace, e-mobility and robotics is certified to ISO 9001:2015 (SQS, Reg. CH-46709); in addition, EN 9100 is cited. The sensors are tested on in-house resolver test benches, with RDC resolutions of 12–16 bits and typical accuracies of 10–40 arcminutes.

Evidence	Zürich
ISO 9001:2015
EN 9100

History

1987
Founding of Admotec for the development, design, manufacture and marketing of motion and position sensors for OEMs.