Ruth Deivamoney Josephine Selvarani, Dhanalakshmi Kaliaperumal, Choi Seung-Bok
Robert Bosch Centre for Cyber Physical System, Indian Institute of Science, Bangalore 560012, India.
Department of Instrumentation and Control Engineering, National Institute of Technology, Tiruchirappalli 620015, India.
Materials (Basel). 2021 Jun 23;14(13):3494. doi: 10.3390/ma14133494.
This paper presents an active accelerator pedal system based on an integrated sensor and actuator using shape memory alloy (SMA) for speed control and to create haptics in the accelerator pedal. A device named sensaptics is developed with a pair of bi-functional SMA wires instrumented in a synergistic configuration function as an active sensor for positioning the accelerator pedal (pedal position sensing) to control the vehicle speed through electronic throttle and as a variable impedance actuator to generate active force (haptic) feedback to the driver. The reaction force emanated from the pedal alerts the driver and takes appropriate control action by slowing down the vehicle, in harmony with the road's condition. The design is developed as a proof-of-concept device and is tested and evaluated in a real-time common rail diesel system for rail pressure regulation and over speeding tests, and the responses and performances are found to be promising.
本文提出了一种基于集成传感器和形状记忆合金（SMA）致动器的主动加速踏板系统，用于速度控制并在加速踏板中产生触觉反馈。开发了一种名为sensaptics的装置，它由一对以协同配置方式安装的双功能SMA线组成，既作为主动传感器用于定位加速踏板（踏板位置传感），通过电子节气门控制车速，又作为可变阻抗致动器产生主动力（触觉）反馈给驾驶员。踏板产生的反作用力会提醒驾驶员，并根据道路状况采取适当的控制行动，使车辆减速。该设计作为概念验证装置进行开发，并在实时共轨柴油系统中进行了轨压调节和超速测试，测试结果表明其响应和性能很有前景。
