Shenzhen Alu Rapid Prototype Precision Co., Ltd.

1.Strain Gauge-Based Sensors:

Principle: Measure deformation (strain) in a material under force using strain gauges, which change electrical resistance proportional to the applied force.

Advantages: High accuracy, cost-effective, widely used.

Applications: Industrial robotic arms for tasks like assembly or material handling.

Example: Wheatstone bridge circuits process resistance changes for precise force measurement.

2.Piezoelectric Sensors:

Principle: Generate an electric charge when mechanical stress (force) is applied to piezoelectric materials like quartz or ceramics.

Advantages: High sensitivity, fast response for dynamic forces.

Applications: High-speed tasks like robotic grinding or impact detection.

Limitations: Less effective for static force measurement due to charge leakage.

3.Capacitive Force Sensors:

Principle: Detect changes in capacitance between plates caused by force-induced displacement.

Advantages: High resolution, low power, suitable for small-scale force detection.

Applications: Precision robotics, such as surgical robots or delicate pick-and-place tasks.

Limitations: Sensitive to environmental factors like humidity.

5.Piezoresistive Sensors:

Principle: Use materials whose resistance changes under mechanical stress, often integrated into MEMS (Micro-Electro-Mechanical Systems).

Advantages: Compact, suitable for miniaturized robots.

Applications: Tactile sensing in robotic grippers or prosthetics.

Limitations: May have lower durability under high forces.

6.Optical Force Sensors:

Principle: Measure force by detecting changes in light properties (e.g., intensity or phase) caused by mechanical deformation, often using fiber optics.

Advantages: Immune to electromagnetic interference, high precision.

Applications: Cleanroom robotics or medical applications.

Limitations: Complex and expensive.

7.Multi-Axis Force/Torque Sensors:

Principle: Combine multiple sensing elements (often strain gauges) to measure forces and torques in multiple directions (e.g., 6-axis sensors for X, Y, Z forces and torques).

Advantages: Comprehensive feedback for complex tasks.

Applications: Collaborative robots (cobots) for safe human interaction or intricate assembly.