Brake tester with combination of mechanical analogue and electric inertia analogue and control algorithm

Abstract

The invention belongs to a mechanical-electrical integration system, relating to electric transmission analogue of a mechanical rotation inertia system, in particular to a brake tester with combination of mechanical analogue and electric inertia analogue and a control algorithm. The control algorithm comprises the following steps of: calculating a total drop-out value when the kinetic energy of a flywheel is related to a test appointed initial rotation speed by synchronously acquiring a flywheel rotation speed and a motor output torque, calculating total energy compensated by the motor according to a mathematic model, simultaneously calculating total energy compensated by the motor to obtain the difference of the two and calculating a force moment output value of the motor in a next control period so that the tester runs in a state of being equal to an ideal flywheel without system constant resistance. The brake tester has an automatic compensation function of an energy compensation error so as to control the total error within a small range; and exact matching of rotation inertia is realized, the requirement of a high-precision test can be met by the control precision, and the investment and the operation cost are saved.

Description

technical field [0001] The invention belongs to an electromechanical integration system, and relates to an electric transmission simulation of a mechanical rotary inertial system, in particular to a brake test bench and a control algorithm combining mechanical simulation and electric inertia simulation. Background technique [0002] In the bench test of various brakes, it is necessary to test the braking performance of the brake under different conditions, the essence of which is that the brake consumes the energy set under specific working conditions. Therefore, the brake test bench should have the function of providing specific energy under different working conditions. The traditional mechanical simulation test bench uses the flywheel to store mechanical energy, which is characterized by: the moment of inertia of the flywheel is fixed or fixed, so its moment of inertia is fixed or has a step difference, and it needs enough flywheels with different moments of inertia to me...

AI Technical Summary

Problems solved by technology

The traditional mechanical simulation test bench uses the flywheel to store mechanical energy, which is characterized by: the moment of inertia of the flywheel is fixed or fixed, so its moment of inertia is fixed or has a step difference, and it needs enough flywheels with different moments of inertia to meet the requirements. Moment of inertia matching accuracy, but not always exact match

If the flywheel set needs to be combined automatically, the number of bearings will be increased, which will increase the inherent resistance of the system and reduce the test accuracy

If the flywheels are combined manually, the operating efficiency of the equipment will be reduced, and it will not be able to meet the requirements of the test rhythm.

When the test requires acceleration, it can lead to an increase in motor power, increasing equipment manufacturing and operating costs

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