Nós usamos cookies para melhorar sua experiência de navegação. Ao continuar usando nosso site, você aceita nossa política de cookies.
Close Cookie Notification
Skip to content
  • Contato
Brasil
Menu
  • PRODUTOS
    Sistemas de Ensaios Acessórios de Ensaios Software para ensaios de materiais
    Sistemas Universais de Ensaios
    Sistemas para Ensaios Automatizados
    Sistemas Dinâmicos e de Fadiga
    Sistemas para Impacto
    Sistemas para Torção
    Atualizações
    Câmaras e fornos ambientais
    Extensômetros
    Garras, dispositivos, braçadeiras, faces de mordentes, acoplamentos e adaptadores
    Crash Simulation Accessories
    Células de carga
    Acessórios para estruturas de carga
    Custom Accessories
    Software Bluehill Universal
    Bluehill LE for Basic Testing
    Bluehill 3
    CEAST
    CrashSim
    CrashSim Office
    DIC Replay
    Fracta
    LCF3
    Partner
    RS LabSite® modulogic
    Software para sistemas série 8800
    TrendTracker
    WaveMatrix
  • Soluções em ensaios
    Por material Por norma Por tipo de ensaio Soluções para a Indústria
    Adesivos
    Vestuário e calçados
    Biomateriais
    Biomedicina
    Cerâmicas e vidros
    Componentes
    Compósitos
    Concreto, asfalto e rocha
    Fixadores
    Filmes
    Espumas /Poliuretano
    Alimentos
    Metais
    Embalagens
    Papel
    Plásticos
    Borrachas e elastômeros
    Springs
    Têxteis
    Madeira
    ASTM
    ISO
    Outras
    Compressão
    Cisalhamento
    Flexão
    Fadiga de de alto ciclo
    Impacto
    Fadiga de baixo ciclo/TMF
    Multi-eixos
    Descolamento, rasgo e atrito
    Reologia
    Cíclico simples
    Tração
    Torção
    Thermomechanical Fatigue
    Soluções de Ensaios de Compósitos
    Sobre Ensaios de Plásticos
    Automotive
    Biomedical
    Electronics
    Metals
  • SERVIÇO E SUPORTE
    Instron Connect Product Life Cycle Serviços Treinamento Suporte técnico Resources
    Calibration and Verification
    Instron Implementation Assistance
    FAQs
    Software Update Services
    Serial Number Locator
    Manuais
  • NOSSA EMPRESA
    Contate-nos Sobre nós Careers Biblioteca Sala de imprensa
    Inscreva-se para os folhetos informativos
    Data Privacy Notice GDPR
    Privacy Notice
    Nossa história
    Localizações
    Credenciamentos e certificados
    Termos e Condições
    Controle de Exportação
    Política de Cookies e Privacidade
    Termos de Uso
    Literatura
    Glossário de Termos de Ensaios de Materiais
    Tipos de Ensaios
    Blog
    Estudos de Casos
    Folhetos
    Events
    Notícias
    Webinars
Página Inicial » PRODUTOS » Sistemas de Ensaios » Structural Durability » Structural Durability Products » Servo valves

Servo valves

Menu
  • Structural Durability Products
    • Controller Labtronic® 8800ml
    • Hydropuls® actuators
    • Power Packs and Accessories
    • Sensors
    • Servo valves
    • Test frames and fixtures
Contact Us
  • DESCRIÇÃO
  • Related Products
  • Software

Challenge

To provide the performance envelope required at each test axis, the actuator and servo-valve must be correctly sized and set up. Different tests require different performance characteristics such as a dynamic force, a displacement, a test frequency or a specific velocity. According to the requirement, the servo-valve type and size plays a critical role in getting good control accuracy at the performance level identified. The Servo-valve is therefore a key component in the design of any test system.

Solution

Instron offers a full range of servo-valves from 5 liters to 2400 liters/mins which can be fitted to the Hydropuls linear and rotary actuators to meet a wide range of test applications.

Up to 60 liters/min, we offer a variety of mechanical and electrical feedback 2 stage servo-valves, manufactured according to our specification. Manifolds are available to install up to four of these valves onto a single actuator providing high response performance up to 250litres/min per actuator.

From 250 to 2400 liters/min, Instron has developed a range of 3 stage valves. The characteristics of these valves have been optimized to provide the best possible performance in test applications when combined with the Hydropuls actuators. Special versions of these valves are also available for applications which require specific control characteristics.

For applications such as Damper testing where both high velocities and low speed precision control are necessary, it’s possible to install both 3 stage and 2 stage valves onto one control channel using a switching manifold to select the valve required.

2-stage servo valve

In the first stage an electrical input signal of low power is converted into a differential pressure signal. The differential pressure causes displacement of a spool which controls the effective power in the form of hydraulic energy flow. Bearing in mind the requirements of servohydraulic tests facilities, servovalves should have a linear frequency response in the upper frequency range.

It is possible to increase this power potential by connecting four servovalves in parallel. Where high energy flows are to be controlled Schenck prefer to use three-stage servovalves and have developed units capable of producing an effective power output of 2.2 MW.

3-stage servo valve

A second spool with a large cross sectional area is attached to a small 2-stage servovalve. The position of the second spool determines at this stage the supply and return flow resistance for the oil which acts on the piston areas of a Hydropuls® actuator. The spool position is measured by means of a displacement transducer and controlled by a PD controller and the pre-control servovalve. Using this electrical feedback principle, the 3-stage servovalve features almost the frequency characteristics of its pre-control valve.

Axle Test System

Axle test rigs are used to reproduce different loads applied to the axle elements when a vehicle is traveling over a variety of road surfaces. Instron can provide models for testing of car, van, truck and bus axles with 6 degree-of-freedom.

Component Test Systems

Instrons component testing systems are characterized by the highest quality and reliability, ensuring the highest productivity in daily use.

Multi-Axis Shaking Table (MAST)

Multi-axis simulation (MAST) tables are designed for testing of a variety of different specimens in six degrees of freedom. These include components and subassemblies exposed to vibratory loads during vehicle operation; from seats, dashboards and interior equipment components to engine mounts, and cooling modules.

Road Simulator

HYDROPULS® road simulators are a versatile and cost efficient solution for testing load inputs through the tires. They are used to perform durability tests, as well as acoustic and vibration analyses in testing and development (BSR, NVH) on complete vehicles, subsystems and power train assemblies.

Full Vehicle Test System

Instron offers comprehensive solutions with and without vehicle restraint, with long- or short-stroke introduction of lateral forces as well as the optional environmental simulation with regard to temperature humidity and sun loading.

Biaxial Wheel Test System (ZWARP)

The Biaxial Wheel Test (ZWARP) developed by Instron includes an additional hydraulic actuator which allows a controlled and highly accurate adjustment of the angle of attack to produce high lateral forces.

Dynamic Torsion Test System

The dynamic torsion test stand is designed for the operational fatigue testing of torsional vibration dampers under rotational speed.

Shock Absorber Test Systems

Instron's MSP test system is the ideal tool for reliable, fast and realistic tuning of vehicle chassis designs and development of shock absorber systems.

Elastomer Test System VHF and MHF

The MHF and VHF excel outstanding flexibility and the capability to adapt to constantly changing requirements of the viscoelastic properties of elastomeric suspension and chassis components. They are designed specifically for optimum testing of these components to establish their dynamic characteristics.

RSLabSite modulogic

All you need for your durability tests is the measurement data obtained from the proving ground – RS LabSite® modulogic will do the rest!

Instron Logo

“É nosso objetivo na Instron fornecer aos nossos clientes a melhor experiência de parceria fornecendo produtos da mais alta qualidade, suporte especializado e serviços de classe mundial.”


Yahya Gharagozlou 
Presidente do Grupo, ITW Test & Measurement

Links úteis

  • Oportunidades de carreira
  • Biblioteca
  • Folhetos
  • Estudos de Casos
  • Glossário
  • Acreditação
  • Sistemas de Ensaios
  • Acessórios de Ensaios
  • Soluções em ensaios

Connect with Us

  • Blog
  • LinkedIn
  • YouTube
  • Slideshare
  • Facebook
  • Twitter

Registre-se para receber nossos folhetos informativos

© Illinois Tool Works Inc. All rights reserved. | [email protected]

  • Política de Cookies e Privacidade
  • Termos de Uso
  • Controle de Exportação

SELETOR DE REGIÃO

Dismiss Region Selector

Americas

  • North America
  • Brasil
  • South America

All Other Countries

  • Global Site

Europe

  • France
  • Sweden
  • Deutschland
  • Hungary
  • Italia
  • Polska
  • Россия
  • España
  • Switzerland Deutsch | French | Italian
  • Türkçe
  • United Kingdom

Asia Pacific

  • Australia
  • 中国
  • India
  • 日本
  • 대한민국
  • Singapore
  • 台灣
  • ประเทศไทย