{"id":84459,"date":"2026-06-23T10:16:00","date_gmt":"2026-06-23T08:16:00","guid":{"rendered":"https:\/\/fhi.nl\/nieuws\/viper-motor-control-solution-kendrion-drives-the-electrification-of-high-performance-power-tools-2\/"},"modified":"2026-07-13T12:54:42","modified_gmt":"2026-07-13T10:54:42","slug":"what-is-sensorless-motor-control-and-why-does-it-matter","status":"publish","type":"news","link":"https:\/\/fhi.nl\/en\/news\/what-is-sensorless-motor-control-and-why-does-it-matter\/","title":{"rendered":"What is sensorless motor control and why does it matter?"},"content":{"rendered":"
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\n\t\t\t\t\tWhat is sensorless motor control and why does it matter?\t\t\t\t<\/h1>\n\n\t\t\t\t
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How sensorless control improves reliability in battery-powered equipment.<\/p>


<\/p>

Electrification is changing the way machines are designed. More equipment is moving away from combustion engines, hydraulic only systems or cable powered solutions. Instead, manufacturers are developing compact, battery powered machines that still need to deliver strong, stable and efficient performance. That shift puts more pressure on the motor controller. <\/p>

In applications such as forestry equipment, agricultural machinery, mobile tools and hydraulic pump systems, the controller has to do more than start and stop a motor. It must manage torque, speed, efficiency and load changes while operating in wet, dirty or vibrating environments. This is true sensorless motor control<\/a> becomes relevant.
 <\/p>

What is <\/strong><\/span>sensorless<\/strong><\/span> motor control?<\/strong><\/span> <\/span><\/h4>

In many electric motor systems, sensors are used to detect the position of the rotor. This information helps the controller decide how to drive the motor. <\/p>

Sensorless motor control takes a different approach. Instead of depending on a separate position sensor, the controller uses electrical signals from the motor itself. With advanced algorithms, it estimates the rotor position and controls the motor based on that information. <\/p>

Sensorless control is often used in brushless motor control systems where precise, efficient and reliable motor behavior is needed without adding extra sensor components. <\/p>

For engineers, the benefit is clear. Fewer separate sensor components can mean fewer cables, fewer connectors and fewer parts that need protection inside the machine. <\/p>

That is especially valuable in equipment that is used outside the lab, outside the factory and under real working conditions.<\/p>


<\/p>

In demanding applications, every component <\/span>has to<\/span> justify its place in the system. <\/span>Sensorless<\/span> control helps reduce complexity while still supporting precise and stable motor performance.<\/span><\/p><\/blockquote>

Eric Besselink, Hardware Engineer <\/span>Kendrion<\/span> 3T<\/span> <\/span><\/p>


<\/p>

Sensorless<\/strong><\/span> vs. <\/strong><\/span>sensored<\/strong><\/span> motor control: what is the difference?<\/strong><\/span><\/h3>
Topic<\/strong><\/span><\/td>Sensored<\/strong><\/span> motor control<\/strong><\/span><\/td>Sensorless<\/strong><\/span> motor control<\/strong><\/span><\/td><\/tr>
Rotor position detection<\/strong><\/span><\/td>Uses a separate sensor to measure rotor position<\/span><\/td>Estimates rotor position using electrical signals from the motor<\/span><\/td><\/tr>
System complexity<\/strong><\/span><\/td>Needs additional sensor components, cables and connectors<\/span><\/td>Can reduce the number of separate components<\/span><\/td><\/tr>
Integration<\/strong><\/span><\/td>More parts need to be fitted and protected inside the machine<\/span><\/td>Can support a more compact system design<\/span><\/td><\/tr>
Reliability in harsh environments<\/strong><\/span><\/td>Sensors and connectors may need extra protection<\/span><\/td>Fewer exposed parts can help reduce failure risks<\/span><\/td><\/tr>
Best fit<\/strong><\/span><\/td>Useful when direct position feedback is required<\/span><\/td>Useful when compact, robust and efficient control is important<\/span><\/td><\/tr><\/tbody><\/table><\/figure>

Both approaches can be technically valid. The right choice depends on the application. In demanding battery powered equipment, sensorless motor control can be valuable because it supports a simpler and more robust system design while still enabling stable motor performance. <\/p>


<\/p>

Why <\/strong><\/span>sensorless<\/strong><\/span> motor control matters for battery powered equipment<\/strong><\/span> <\/span><\/h4>

Battery powered equipment brings a different design challenge. The available energy is limited, but users still expect strong performance, fast response and long runtime. <\/p>

That means the motor controller has a direct impact on the complete product experience. If the controller is inefficient, battery runtime drops. If it cannot handle dynamic loads, performance becomes unstable. If it is not robust enough, reliability becomes a risk in the field. <\/p>

This is why electrification is not only about replacing the power source. It also requires smart control of energy, torque and motor behavior. <\/p>

For forestry and agricultural equipment, this can make a major difference. A chainsaw, wood splitter, winch, sprayer or battery powered hydraulic system does not operate under one simple condition. Loads change. The environmental changes. The available battery energy changes. <\/p>

The motor control platform must be ready for that. <\/p>


<\/p>

Why standard controllers can become limiting<\/strong><\/span> <\/span><\/h4>

A standard off the shelf motor controller can be a good choice for simple applications. But in demanding equipment, the limits can show quickly. <\/p>

Low cost standard controllers are often designed for broad use. That can make them less suitable when the application needs a specific fit, high peak performance, strong startup behavior or stable control under changing loads.The issue is not only whether the motor runs. The real question is whether the complete system keeps performing when the load changes, the battery level drops or the environment becomes harsh. <\/p>

For example, a hydraulic pump system may need high torque at startup and stable control during variable load operation. A battery powered tool needs efficient energy use to protect runtime. Mobile machinery needs compact electronics that fit into the product design without creating extra integration problems. <\/p>

In these cases, a fixed standard controller can force design compromises. <\/p>


<\/p>

See how we have successfully customized VIPER for a battery-powered rescue tool.<\/u><\/span><\/a> <\/span><\/p>


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Electrification is changing the way machines are designed. More manufacturers are developing compact, battery powered machines that still need to deliver strong, stable and efficient performance under demanding conditions. This makes the motor controller a key part of the complete system.<\/p>\n

In this blog, Kendrion 3T explains why sensorless motor control is relevant for battery powered equipment. By using electrical signals from the motor itself, sensorless control can reduce the need for separate sensors, cables and connectors. This helps lower system complexity and supports reliable motor performance in harsh environments.<\/p>\n

The blog also explains why standard motor controllers can become limiting in demanding applications such as forestry equipment, agricultural machinery, mobile tools and hydraulic pump systems, and how VIPER can support robust and efficient motor control.<\/p>","protected":false},"featured_media":0,"template":"","branches":[13],"events":[],"secretariat":[],"categories":[18,57],"themes_tax":[538,511,509,510],"content_types":[514],"class_list":["post-84459","news","type-news","status-publish","hentry"],"acf":[],"yoast_head":"\nSensorless motor control for battery powered equipment<\/title>\n<meta name=\"description\" content=\"Learn why sensorless motor control matters for battery powered machines and how VIPER supports efficient, robust performance in demanding applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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