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Feedback Sensors

Other Feedback Sensors (LVDT, Tachometers, etc.)

What types of feedback sensors exist besides encoders and resolvers?

Modern automation and robotics rely on a wide range of sensors to provide accurate feedback for control systems. While encoders and resolvers are the most common, many other sensor types play a crucial role in monitoring motion, force, pressure, and environmental conditions. Selecting the right feedback sensor ensures optimal system performance, safety, and reliability.

  • LVDT (Linear Variable Differential Transformer): Non-contact sensor for precise linear displacement; widely used in aerospace and automation.
  • Tachometer Sensor: Measure rotational speed of motors/shafts; provide analog or digital output for speed control.
  • Force Sensors (Load Cells): Detect force, weight, or load; common in robotics and material testing.
  • Accelerometers: Measure acceleration and vibration; used in machinery monitoring, vehicles, and devices.
  • Gyroscopes: Provide angular velocity data; essential in navigation, drones, and robotics.
  • Pressure Sensors: Detect gas or liquid pressure; used in HVAC, hydraulics, and fluid systems.
  • Temperature Sensors: Thermocouples, RTDs, and thermistors track heat in manufacturing and electronics.
  • Proximity Sensors: Sense presence/absence of objects for automation and safety systems.
  • Hall Effect Sensors: Detect magnetic fields for position/speed; often used in motors and vehicles.
  • Strain Gauges: Measure mechanical strain in structures and aerospace applications.

These sensors complement or compete with encoders and resolvers, depending on application needs for accuracy, reliability, and performance.

What specific quantities do these sensors measure?

Sensors are designed to detect specific physical quantities, converting them into measurable signals for control and monitoring systems.

  • Temperature Sensors: Measure heat levels; results in °C, °F, or K.
  • Pressure Sensors: Detect force from gases/liquids; expressed in Pa, bar, or PSI.
  • Proximity Sensors: Measure distance without contact using IR, ultrasonic, or capacitive tech.
  • Accelerometers: Detect acceleration, vibration, or shock; measured in m/s².
  • Gyroscopes: Measure angular velocity; given in °/s or rad/s.
  • Light Sensors: Detect light intensity; results in lux or lumens.
  • Humidity Sensors: Measure air moisture; shown as %RH.
  • Gas Sensors: Detect gas concentration; reported in ppm.
  • Magnetic Sensors: Measure magnetic fields; expressed in gauss or tesla.
  • Sound Sensors (Microphones): Detect sound levels; measured in dB.

These sensors are applied across automation, environmental monitoring, industrial control, and consumer electronics to ensure accurate data collection and reliable system performance.

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When might you choose an LVDT or a tachometer for feedback?

LVDT is chosen when you need high-precision, contactless linear displacement measurement - such as in hydraulic actuator position feedback, material testing machines or precision assembly equipment.

Tachometer sensor is selected for direct, real-time rotational speed feedback in motor control, conveyor monitoring or any application requiring closed-loop speed regulation and over-speed protection.

Commitment to Quality Standards

Norck Robotics, as a division of Norck, proudly operates under ISO 9001:2015 certification.

Key aspects include:

  • International Standards: Ensuring all processes align with globally recognized quality benchmarks.
  • Customer Centric Approach: Prioritizing customer satisfaction through consistent and reliable service.
  • Continuous Improvement: Emphasizing the optimization of operations and workflows.
  • Operational Excellence: Maintaining efficiency and reliability in all activities.

This certification reflects Norck Robotics’ ongoing commitment to quality and performance.

View our ISO certification standards and compliance documentation.

How do force sensors enable closed-loop force control?

A force sensor measures the actual force applied and sends that signal to the controller, which compares it to the desired force setpoint. The controller then adjusts the actuator’s drive commands (current or pressure) to eliminate any difference. This continuous sense–compare–correct cycle maintains precise, consistent force in tasks like robotic assembly, torque control in screwdriving, or pressure regulation in sealing processes, protecting both tool and workpiece.

Norck Robotics - Expertise in Other Feedback Sensors (LVDT, Tachometers, etc.) Manufacturing

Norck Robotics develops several output feedback sensors for position, speed, and displacement measurement for high-performance motion systems. From high-end rugged tacho generator speed sensors for rotational feedback to high precision LVDT position sensors used for precision control culminating in sensing solutions for robotics, aerospace, manufacturing, and test environments, our feedback sensors provide real-time accurate measures for a vast array of applications. Whether you need consistent low-latency data in extreme environmental conditions, Norck Robotics feedback sensors are optimized for performance where the standard fails.

  • Accurate Linear Position Detection: LVDT position sensor creates and delivers consistent and repeatable linear position feedback.
  • Rotational Speed Measurement: Our tacho generator speed sensor creates and delivers real-time analog signals providing accurate measures to monitor motor speeds.
  • Flexible Sensing Integration: Our sensors support both analog and digital output allowing easy integration into an existing system.
  • Robust Design: Our sensors have calibrated redundancy for vibration exposure, temperate shifts, and electrical noise.
  • Norck Robotics Comprehensive Support: We provide selection, tuning and integration support to optimize performance for full motion control.

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Norck Robotics specializes in providing unique robotic automation and engineering solutions designed to meet the specific operational needs of each client. Our expertise covers a wide range of industries and applications.

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Engineering Expertise, Every Step of Automation

Norck Robotics delivers turnkey robotic automation and engineering solutions tailored to your specific needs across various industries.

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Whether you need a single robotic cell prototype or full-scale factory automation, Norck Robotics engineers are ready to collaborate with you to bring your concept to life.

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Optimize Your System for Automation

Norck Robotics engineers analyze your existing processes to provide feedback that enhances efficiency, cost-effectiveness, and productivity for robotic integration.

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In addition to its own expert engineering team, Norck Robotics provides access to a network of hundreds of top-tier system integrators, robot manufacturers, and component suppliers across the United States, Germany, and Europe.

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Working with Norck Robotics reduces dependency on manual labor, increases production consistency, and secures your operations against unforeseen disruptions, quality issues, and fluctuations. This enhances your company's supply chain resilience.

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Norck Robotics advances digital automation by developing custom-designed robot grippers, advanced vision systems, and innovative simulation software. With an AI-driven, data-centric approach, it enables smarter system design, optimal performance, and predictive maintenance solutions.

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Environment-Focused Approach

Norck Robotics encourages its partners to be carbon-neutral by reducing energy consumption and material waste through the efficiency of robotic automation, and prioritizes environmentally conscious suppliers.

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