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Chang 'e 5 will use four ultrasonic motors

Release time:

2018-10-16

Who can predict the future of smart manufacturing technology? On the afternoon of December 7, 2016, BBS, a special topic on intelligent manufacturing and frontier technologies, was held in nanjing. At BBS, zhao chunsheng, an academician of the Chinese academy of sciences and a professor at nanjing university of aeronautics and astronautics, introduced the ultrasonic motor developed by his team. The ultrasonic motor will be used not only on the chang 'e-3, but also on the chang 'e-5 in the future.

One ultrasonic motor is used on the chang 'e-3 and four on the chang 'e-5. The ultrasonic motor on the chang 'e-3 is the equivalent of checking the infrared spectrometer system, which is responsible for analyzing the moon's atmosphere and soil composition, and controlling the hatch door so light can enter the chamber while preventing dirt from entering, Mr. Zhao said.

Compared with traditional motors, ultrasonic motors have the advantages of fast response, high accuracy, low noise and no electromagnetic interference, said academician zhao chunsheng. According to him, the trum-30a ultrasonic motor, which has the advantage of the traditional drive motor, can produce 0.12nm of torque with only 46 grams, one-tenth the weight of the traditional motor. It is very important to reduce the weight of the vehicle, and the advantage of the ultrasonic motor is obvious.

More than 200 invention patents have been filed, more than 100 patents have been obtained, and national people. According to zhao, they have developed three series of ultrasonic motors, which can be synchronized with the earth's rotation for 24 hours or with the moon's rotation.

It is understood that this only 46 grams of ultrasonic motor, spent millions of research and development costs. In the laboratory, there is a huge machine, the vacuum high-low temperature space simulation environment test facility, which is designed to simulate the density of air on the moon's surface, which can reduce the density of air to the order of ten to the sixth order, to verify the performance of the ultrasonic sounding machine in the vacuum environment. "It's not easy to reduce the pressure by an order of magnitude," said zhao. "the laboratory also needs to simulate the low temperature and adiabatic tests of the ultrasonic motor, which will cost more."