磁気ポジション センサー
モーション、角度、直線位置をよりスマートにセンシング
Allegro の位置センサは、過酷な車載および産業環境下で、高精度な非接触の直線および回転測定を実現します。複数の出力プロトコルに対応しているため、これらのセンサは設計を簡素化し、システムの複雑性を低減し、安全性が重視されるアプリケーションにおいて高度な診断機能を可能にします。
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リニア ポジション センサー IC
当社のリニアポジションセンサは、高度な線形化とエアギャップの変動に対する強い耐性により、高精度な1次元（1D）位置検出を実現します—精密な非接触モーショントラッキングが求められるアプリケーションに最適です。
角度ポジション センサー IC
Allegro の 2D 角度センサは、車載、産業、ロボットの各アプリケーションにおける高精度なモータ制御向けに、アナログおよび超低レイテンシー (~10 µs) のデジタル出力を提供します。当社のセンサは、ASIL-D 準拠、デュアルダイ冗長性、および最大 ±0.3° の角度精度により、スムーズで効率的、かつ信頼性の高い動作を保証します。
3 次元磁気速度センサー
Allegroの3DMAG™多軸センサは、浮遊磁場を排除しつつ3次元（3D）空間における複雑な直線運動および回転運動を捉えるように設計されており、機械設計の柔軟性と精度をさらに向上させます。
Documentation & Resources
Application Note
Output Protocols for Angle and Linear Position Sensors
AN296191 - This application note describes working principles, lists advantages and limitations, outlines communication rates/delays, and defines error reporting tactics for digital and analog protocols used in angle and linear position sensing.
Application Note
Linear Hall-Effect Sensor ICs
AN27702 - Linear sensor ICs are designed to respond to a wide range of positive or negative magnetic fields. Critical to the performance of linear ICs is their sensitivity and linearity over their specified operating temperature range.
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
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
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
A31315 DLL Programming using MATLAB on Windows OS
AN296260 - This application note describes procedures for programming the A31315 DLL using MATLAB on Windows OS.
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.
Guide
A31316 Evaluation Kit User Guide
The A31316 Evaluation Kit includes everything required to program and evaluate A31316 devices.
Application Note
TMR for Precision Linear Measurement
This paper covers the construction and operational principle of tunnel magnetoresistance (TMR)-based one-dimensional (1D) magnetic sensors produced by Allegro.
Application Note
Non-Intrusive Current-Sensing Using TMR: A Comparison Between TMR Sensors, Sense Resistors, Hall-Effect Sensors, and Current Transformers
Tunnel magnetoresistance (TMR) offers a set of features that allows for its use as a current sensor. Specifically, the Allegro CT100 family of linear TMR sensors can be used as a surface-mount technology (SMT), nonintrusive device with great linearity and thermal performance.
Application Note
From Hall Effect to TMR
This paper compares legacy Hall-effect technology to xMR technology, specifically tunnel magnetoresistance (TMR) from Allegro MicroSystems.
Application Note
TMR for 2D Angle Sensing
This paper discusses the construction and operational principle of Allegro TMR-based angle-sensing technology. The main sources of angle error in two-dimensional (2D) sensors are explained.
Guide
A31315 Evaluation Kit User Guide
The A31315 evaluation kit includes everything required to start programming and evaluating A31315 devices. When used in accompaniment with the Allegro sample programmer, it provides easy evaluation and programming of the A31315 devices without the need for any additional hardware or software.
Technical Article
Magnetic Position Sensors Efficiently Drive E-Bike with Pedal Assist Systems
This technical article describes two designs for the pedal-rate measurement: a design using a pair of one-dimensional (1D) magnetic position sensors, which is common; and a two-dimensional (2D) magnetic speed and direction sensor design.