A heavy-duty vehicle transmission shaft torque detection device and error correction method

Abstract

The invention discloses a heavy-duty vehicle transmission shaft torque detection apparatus. The apparatus comprises a torque sensor which is arranged on a heavy-duty vehicle transmission shaft and is used for detecting transmission shaft torque; a correction sensing apparatus which is arranged on the heavy-duty vehicle transmission shaft and is used for detecting the transmission shaft torque as reference correction data of the detection apparatus; an analog signal processor which is connected with the torque sensor, receives data information acquired by the torque sensor, and after converting, filtering and amplifying the data information, converting the data information into digital information for sending out; and a data processor which is connected with the analogue signal processor and the correction sensing apparatus, receives the data information sent by the analog signal processor and the correction sensing apparatus, and corrects data by use of a built-in algorithm. Further disclosed is a heavy-duty vehicle transmission shaft torque detection error correction method. According to the invention, influences exerted by temperature and environment factors on testing result errors are taken into full consideration, and the sensitivity is high.

Description

technical field [0001] The invention relates to a torque measuring device, in particular to a heavy-duty vehicle transmission shaft torque detection device and a heavy-duty vehicle transmission shaft torque detection error correction method. Background technique [0002] The torque and speed of the drive shaft are important parameters for calculating and characterizing the real-time power performance of the engine. The requirements for its efficiency and stability are self-evident. The principles of torque measurement are divided into balance force method, energy conversion method and transfer method. The force method is a method to use the balance torque to balance the measured torque to obtain the torque. The energy conversion method is a method to measure the torque according to the law of energy conservation. The measured torque is determined by measuring other energy coefficients related to the torque. The size, the transfer method is a method of measuring the torque ac...

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Problems solved by technology

[0002] The torque and speed of the drive shaft are important parameters for calculating and characterizing the real-time power performance of the engine. The requirements for its efficiency and stability are self-evident. The principles of torque measurement are divided into balance force method, energy conversion method and transfer method. The force method is a method to use the balance torque to balance the measured torque to obtain the torque. The energy conversion method is a method to measure the torque according to the law of energy conservation. The measured torque is determined by measuring other energy coefficients related to the torque. The size, the transfer method is a method of measuring the torque according to the change of the physical parameters (deformation, stress and strain) produced by the elastic element when the torque is transmitted, the balance force method is only applicable to the situation of uniform speed and static state, and the indirect measurement factor of the energy conversion method Too many, and the error is large, these two groups of methods are not suitable for dynamic measurement, so there is an urgent need for a device that uses the transfer method to accurately measure the torque of the drive shaft in real time

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