Ascential (formerly Titan) Class 3-8 Truck - Automatic system for powertrain transmission applications. Test stations designed and built to simulate a fully functional commercial truck. Using two VFD Controlled Electrical Motors these stations simulate the input shaft from the engine and the output shaft from the drivetrain to make these transmission feel like they are at home in the truck they are meant for. Automatic transmissions commanded via CAN bus from a simulated Driver Interface Device (DID) to engage FNR gears. The transmission determines shifting points based on input/output shaft speeds, requested acceleration, and torque. These are CAN-based systems with the transmission controller and the engine simulation control working in harmony to apply the right amount of torque, engage/disengage the clutch, command the shift, and to smoothly transition from one gear to the next. The system includes a full computer-based NVH system incorporating accelerometers, microphones, laser vibrometers, torque and speed sensors. Live data is captured for the full test of the transmission, recording live data at up to 10khz per channel.
这些测试工位设计制造,用于模拟功能完备的商用卡车。它们采用两台 VFD 控制的电机,分别模拟发动机的输入轴和传动系的输出轴,为变速箱再现真实的运行工况。这些自动变速箱通过 CAN 总线,由模拟的驾驶员交互设备(DID)发出指令,进入 FNR 挡位。变速箱综合输入轴转速、输出轴转速、请求的加速度和扭矩,确定下一个换挡点。这些均为基于 CAN 的系统,变速箱控制器与发动机模拟控制协同工作,施加适当的扭矩,接合/分离离合器,下达换挡指令,并使挡位平顺地切换至下一挡。
该系统内置完整的计算机化 NVH 系统,集成加速度计、麦克风、激光测振仪以及扭矩和转速传感器。在变速箱的整个测试过程中采集实时数据,每通道记录频率最高可达 10 kHz。除全部传感器数据流式写入磁盘外,还可在最多 4 条 CAN 总线上记录 CAN 数据。记录的 CAN 数据和 DTC 与传感器数据一并存储并保持时间对齐,便于快速绘制曲线和查看。每台变速箱的每次测试均生成带序列号的测试数据。
Ascential T&M 3–8 级卡车 - 自动测试系统适用于动力总成变速箱领域。该系统采用两台 VFD 控制的电机,分别模拟发动机的输入轴和传动系的输出轴,从而模拟功能完备的商用卡车。