磁気ポジション センサー

Blog

Precision in Motion: Advanced Sensing for Industrial Control

Explore how the world of industrial automation, precision and reliability are not just goals; they are absolute necessities. Whether it's a multi-axis robotic arm, a smart valve, or a complex human-machine interface (HMI), the ability to accurately and dependably track motion and position is critical.

Application Note

A31315 Slide-By Introductory Application Guide

AN296189 - The A31315 is a multi-axis Halleffect sensor with advanced integrated signal processing capabilities that simplifies the numerous design challenges that the systems designer faces.

Application Note

Advanced On-Chip Linearization in the A1335 Angle Sensor IC

AN296127 - This document shows how magnetic-input-related errors in excess of ±20 degrees can be linearized by the A1335 to as low as ±0.3 degrees—roughly a 65× improvement.

Application Note

Linearization and Two-Point Programming on the A31100 and A31102

AN296213 - This application note highlights the procedure for calculating the magnetic field compensation parameters through two-point programming and calculating the linearization coefficients using our available software tools with the intention of providing an easy-to-use guide to programming these sensor ICs.

Application Note

System Advantages of High-Resolution Wheel Speed Sensing

AN296228 - With the vehicle market trending toward autonomous driving in the near future, the need for high resolution in the wheel speed sensor (WSS) business becomes essential. Allegro, with input from market leaders, has released the first high-resolution wheel speed sensor (HRWSS) that targets this demand.

Application Note

Short-Stroke Rotary Application of the A31315

AN296204 - This guide is intended to assist you in applying the A31315 Samples Programming Software to your short-stroke rotary application, such as a throttle-body, which uses the A31315 Advanced Linear Sensor and a target motion of 0° to 90°.

Application Note

A31315 Single Die Sensor Error Function - How to Use

AN296229 - The Allegro 3D magnetic sensing devices can be used in a wide range of applications where mechanical motion (linear or rotational) can be expressed by a changing magnetic angle. Read More.

Application Note

Non-Contact Based Controller Solutions

AN296227 - Implementing controller functions through non-contact solutions provides both performance and reliability advantages over typical contact-based input methods.

Application Note

Achieving Fast SENT Message Response with A1346 Linear Hall-Effect Sensor ICs on Shared Bus 

AN296131 - In safety-critical magnetic sensing applications, such as torque sensing in electronic power steering (EPS) modules, redundant sensors are often the approach used to achieve desired performance while maintaining strict safety requirements.

Brochure

Brochure: Driving Change by Advancing Personal Mobility Through Cutting-Edge Technology

Our advanced sensor and power IC solutions are engineered specifically to meet the unique requirements of these designs, providing superior performance and reliability in harsh environments and under complex operating conditions.

Application Note

Signal Path Delay for A31315 3D Sensor

AN296263 - The delay in a signal path can be described as the trail between the real-time angle and the displayed output angle. This delay represents the time needed to convert the magnetic field data sensed by the Hall plates into angle information.

Application Note

Giant Magnetoresistance versus Hall-effect: A Comparison of Technologies for Speed Sensor Applications

Allegro MicroSystems giant magnetoresistance (GMR) effect technology offerings build on lessons learned from experience with Hall-effect devices to enable new options for speed sensing system design.

Application Note

Two-Point-Programming for the A1330

AN296199 - This application note serves as a guide for using a two-point programming algorithm to calculate and program the values needed for short-stroke rotational position sensing with the A1330 angle sensor IC.

Application Note

Effect of Ring Magnet Dimensions on Differential Speed Sensor Performance

AN296251 - In this application note, we describe how ring magnet dimensions affect speed sensor performance is given.

Brochure

3DMAG Position Sensors

Combining our proven planar and vertical Hall technologies, 3DMAG solutions offer robust, high-performing, three-axis magnetic field measurements in a single IC.

Application Note

3D Hall-Effect Sensor Magnetic Tamper Detection Smart Home Systems

AN296223 - The experiment results highlight several advantages of 3D Hall-effect sensors such as their ability to detect strong magnetic fields that are randomly applied to the outside of a smart home device.

Technical Article

The Future of Automotive Wheel Sensing with GMR

P0083 - With the rise of vehicle electrification, computerized control systems, and subsystem reliability monitoring, it has become essential for systems to have accurate rotational information for each wheel of the vehicle.

Application Note

Using the SENT Communications Output Protocol with A1341 and A1343 Devices

AN296108 - This application note provides a description of the Allegro implementation of the SENT protocol, which includes extensions developed by Allegro to enhance the information carrying dimensions of the output from the Allegro sensor IC to the vehicle electronic control units (ECU).

Application Note

PCB Ground Plane Optimization for Coreless Current Sensor Applications

AN296277 - This application note provides guidelines on how a PCB ground plane around the sensor location should be designed to achieve optimum performances.

Application Note

Differential Hall-Effect Sensors: Safer and More Reliable for Two-Wheelers of the Future

AN296173 - The use of electronic controls for engine, transmission, and wheel speed in two- and three-wheeled vehicles is growing, particularly in developing nations. This trend is largely driven by mandates to improve air quality, fuel efficiency, and vehicle safety worldwide.

Video

Circular Vertical Hall Sensor IC Technology Overview

Allegro’s family of contactless Hall magnetic high resolution 360° angle sensor ICs are designed for safety critical automotive and industrial applications. With their system-on-chip (SoC) architectures, they provide fast output refresh rates and low signal path latency.

Application Note

How to Determine and Remove Systematic Channel Errors Using 3D Linear Angle Sensors

AN296201-This application note intends to describe the channel level errors and their impact on reported angle in 3D linear angle sensors when using the device in an on-axis rotary application. This document will also describe how to compensate for these errors using internal customer settings.

Application Note

Using the A1330 in a Short Stroke Application

AN296163 - This application note is a guide for using the A1330 angle sensor IC for short stroke rotational position sensing, including information on magnet choice and orientation.

Application Note

Slide By Sensing for Long Stroke applications using Allegro Angle Sensors

This application note is a guide through the design process for using angle sensor ICs for linear position sensing, including magnet choice and orientation, output linearization, and using sensor IC arrays for extending the measurement range.

Application Note

Chopper-Stabilized Amplifiers With Track-and-Hold Signal Demodulator

The conventional signal demodulator of a chopper amplifier can be substituted by track-and-hold (T/H) and averaging functions. This arrangement provides offset cancellation without requiring low-pass filters and can ignore the residual offset generated by input spikes.