Four-Quadrant Electric Inertia Simulation Comprehensive Chassis Roller Test Bench, Full-Condition Dynamometer For ICE & New Energy Vehicle Complete Performance Calibration

3.1 Core Working Principle & Technical Superiority

Different from traditional mechanical inertia roller bench with fixed flywheel configuration, our comprehensive roller dynamometer is built around four-quadrant AC servo loading and digital electric inertia simulation algorithm. The bench uses high-precision torque and speed sensors mounted on roller shaft to collect real-time wheel power output data; the servo motor works as both power absorber and feedback power generator to simulate road rolling resistance, aerodynamic drag and gradient resistance under various driving scenarios. Digital electric inertia replaces bulky mechanical flywheels to replicate vehicle inertial weight flexibly according to curb weight and gross vehicle weight of different models, which drastically reduces overall floor occupation and mechanical wear of the whole equipment.

Built-in dynamic environmental compensation program automatically offsets measuring errors caused by ground vibration, ambient temperature fluctuation and tire slight deformation during long continuous testing, achieving outstanding measuring repeatability. The whole control system adopts closed-loop feedback regulation to switch freely among constant speed, constant torque and constant power control modes, ensuring test data highly consistent with real on-road driving performance and solving the long-standing defect of large data deviation on conventional static roller test equipment. Meanwhile, reserved communication protocol interfaces support synchronous linkage with exhaust gas analyzers, fuel consumption meters and ADAS calibration devices to realize multi-item synchronous composite testing.

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