Ideal for positioning control in steer-by-wire systems, solid-state RLS magnetic rotary encoders combine high-performance capabilities with affordability, go anywhere environmental ruggedness, and great application versatility. Selected for by-wire systems in automobiles, off-road vehicles, lift equipment, aircraft, military weapons, and marine vessels, the non-contact, solid-state encoders are available in 7-bit to 13-bit models and industry-standard absolute, incremental, or linear output formats.
The RLS magnetic encoders deliver high-resolution positioning (up to 8,192 count per revolution), speeds to over 60,000 rpm, measurement accuracies to 0.4°, while withstanding temperatures from -40°C to +125°C and high levels of shock, vibration, acceleration, and pressure. Breakthroughs in solid state simplicity, essentially just a magnet and chip, the non-contact designs provide frictionless, zero-wear, low-inertia operation for “fit and forget” reliability, while compact design allows space savings, design flexibility, and ease of integration.
Compact sealed versions are also available with protection to IP68 for harsh environments, including immersion applications (e. g., pumps and gearboxes). Two-in-one models feature a backup chip for critical situations requiring redundant capabilities.
Easy to integrate, the RLS magnetic encoders come in component, modular and packaged versions, and absolute or incremental (1,024), analog, linear voltage or linear current output versions. Absolute encoders are available in 7-bit (128 counts per revolution incremental) to 12-bit (4096 count) resolution in parallel or serial data formats, while incremental output options include digital (128 ppr), analog, linear voltage and linear current modes. Supply voltage is either 5V or 24V, depending on encoder/output format. The linear voltage or current output options can be used in traditional potentiometer applications.
It has a small diametrically polarized magnet and a custom Hall sensor ASIC which contains an array of Hall effect sensors that generate a voltage when exposed to a magnetic flux field. The Hall sensors detect the change in magnetic flux as the magnet rotates above the ASIC. Through creative design, the ASIC can cancel magnetic interference, enabling it to operate in areas of high external magnetic fields and cope with imperfections in the shape of the flux field of the actuating magnetic.
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To enable closer focus on the individual market requirements of Renishaw's expanding range of innovative products, the parent company, Renishaw plc, has formed six Products Divisions to accomodate the categories of CMM products, Machine tool products, Laser and calibration products, Encoder products, Digitising products and Spectroscopy products. These are supported by three further Divisions – Technical services, Manufacturing services and Corporate services. The Group's products provide manufacturers with the ability to machine components accurately, and perform measurement traceable to International Standards. Wherever precision manufacturing is required, the use of Renishaw's products ensures that exacting specifications are met, with cost-effective methods.
:: Design World ::
Filed Under: Aerospace + defense, Automotive, Factory automation, Off highway • construction, Encoders (rotary) + resolvers, Mechanical, Motion control • motor controls