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Multi-axis independent motor chassis dynamometer system driving resistance simulation loading method and system

An independent motor and chassis dynamometer technology, applied in simulators, general control systems, control/regulation systems, etc., can solve the problems of less research on driving resistance loading methods, achieve the effect of ensuring speed synchronization accuracy and improving simulation accuracy

Inactive Publication Date: 2016-06-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0008] Due to cost and other reasons, there are currently few chassis dynamometer systems for multi-axis independent motors, so there are few studies on the driving resistance loading method based on this system, and there is currently no public literature on the driving resistance simulation method for this system

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  • Multi-axis independent motor chassis dynamometer system driving resistance simulation loading method and system
  • Multi-axis independent motor chassis dynamometer system driving resistance simulation loading method and system
  • Multi-axis independent motor chassis dynamometer system driving resistance simulation loading method and system

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] In this embodiment, a dual-axis independent motor chassis dynamometer system is taken as an example to introduce the simulation loading method of running resistance of the present invention in detail. The two-axis independent motor chassis dynamometer system includes four three-phase AC motors (respectively, motor A, motor B, motor C and motor D) and four drums (drum A, drum B, drum C and drum D), each motor independently controls a drum, such as figure 2 shown. The simulation of automobile inertia consists of two parts: mechanical inertia and electric inertia. The basic inertia of the drum and its transmission part is the mechanical inertia of the driving resistance simulation system, which cannot be controlled, so it can only be controlled by its electric inertia, that is, the motor.

[0036] In order to make the sum of the loading torque of e...

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Abstract

The invention discloses a multi-spindle independent motor chassis dynamometer system driving resistance analog loading method and a system thereof. According to the value of total driving resistance needing to be loaded on a chassis dynamometer system, closed loop driving resistance torque control is carried out on a motor of one drum in the chassis dynamometer system, and speed follow control is carried out on motors of other drums. A target torque value of the drum of the closed loop driving resistance torque control is set to be the value that a total driving resistance value minus the sum of loading torque values of other drums at present, a target speed value of the speed follow control is set to be the linear combination value of speed values of other drums, and therefore the torque control and the speed control of the system are mutually independent. By means of the multi-spindle independent motor chassis dynamometer system driving resistance analog loading method, oscillation of drum torques and speeds because of coupling of a torque control system and a speed control system can be avoided, proportion integration differentiation (PID) control parameters of each drum motor control system can be adjusted independently, and therefore analog accuracy of multi-spindle chassis dynamometer system driving resistance can be improved beneficially, and meanwhile speed synchronization precision of each drum can be guaranteed.

Description

technical field [0001] The invention relates to a simulation loading method, in particular to a driving resistance simulation loading method and system of a multi-axis independent motor chassis dynamometer system. Background technique [0002] Chassis dynamometer, also known as roller test bench, simulates the relative movement between the car and the road surface with the roller equivalent to a continuously moving road surface during dynamic and economical tests. During the test, the load is applied to the drum through the chassis dynamometer loading device to simulate the driving resistance of the car, so that the car can be tested for power and economy under the conditions as close as possible to the actual driving conditions of the car. According to the different loading methods of driving resistance, chassis dynamometers include electric dynamometers, eddy current dynamometers, hydraulic dynamometers, etc.; according to the number of rollers, there are single-roller and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B17/02
Inventor 齐志权陈思忠吴志成王宝锋马国成
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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