InSync Cardio — Digital Fitness Platform for Cardio Training

From the spinning pedal revolution to the gradient slope: the InSync Cardio platform turns cardio equipment into precise training machines with real-time force control.

Conventional cardio equipment simulates terrain and resistance via mechanical flywheels and brake pads, which do not allow precise force or power control. The Akrodyn InSync Cardio platform replaces these components with a fully digitally controlled motor drive (X-Series) that updates torque, inertia, power and position 20 000 times per second. The result: genuine terrain simulation, reproducible HIIT intervals, MPPT training evaluation and gamification on any spinning bike, stepper or rowing ergometer platform.

Training Modes

• Terrain simulation: Torque profile follows real elevation profiles or programmable routes in real time
• Adjustable Resistance and Inertia: Stepless adjustment of resistance and simulated flywheel mass via API
• MPPT Training: Maximum Power Point Tracking for power maximisation and HIIT evaluation
• Constant Power: Constant power independent of cadence for planned endurance training
• Position Dependent Torque: Load profile depending on pedal position for technical training
• Gamification: Physical feedback synchronised with screen or VR for immersive training experiences

System Architecture

The platform consists of an Akrodyn X-Series motor controller, a brake chopper, a power resistor or an optional feed-in unit, and an electric motor of the customer's choice (PMSM, BLDC, asynchronous, brushed, brushless). Sensorless operation with full torque signal from nearly 0 Hz possible. Encoders (Hall, incremental, BiSS-C, SSI) optional.

Technical Specifications

Interfaces

• CAN / CAN-FD up to 5 Mbit/s, up to 120 nodes on the bus
• USB-C for development and configuration
• EtherCAT (high-power controllers of the X-Series only)
• Bluetooth Low Energy (BLE) for consumer tablets and smartphones
• API in C/C++ and Python, DFU-capable

Typical Applications

• Spinning bikes and indoor cycling trainers
• Steppers and cross trainers
• Rowing ergometers
• Rehabilitation cardio equipment
• Research and sports laboratory ergometers

Reference

Case study eSpin: Retrofit of a commercial spinning bike with InSync Cardio. 2 kW X-Series controller, Bluetooth API, gamification via consumer tablet, 250 W power supply.

On request. We configure the platform for your motor, your device and your training modes.