Rai-sing the residual magnetization of the substrate, increasing the ratio R = 4πM/(4πMs) (4πM-the magnetization of the "latching state" of the device, 4πMs-the saturation magnetization) are effective in reducing the insertion loss of the device, raising the effective-ness of phase shift, extending the frequency range of the device, and reducing the drive power, etc.

The product belongs to the category of counter shaft power-shift transmission. Its rated input speed is from 1800 r/min to 2400 r/min and drive power from 40 kW to 50 kW.

This paper is to probe the calculation method of billet deformation and friction resistance moment exerted on extrusion wheel,and deduces the formulae of calculating drive power of continuous extrusion cladding machine.

Compared with the traditional settlers, the Φ42×6 m flat-bottom cable torque settlers, which are adopted in the red mud separation and washing system of CHALCO Shanxi Branch, have the advantages of simple process flow sheet, large capacity, little investment, long cleaning cycle, low drive power and canceling the lifting devices and so on, these have some referent significance for the non-ferrous industries.

According to the working stress of drive conical wheel and material fatigue, and with the application of the theory of reliability design, the paper explores the relations between conical shaper drive power, conical wheel diameter, material fatigue, and reliability, thus providing a certain reference for the reliability design of drive conical wheel.

Selecting 89C51 MCU as system driver,not only because its high drive power,but its simple and convenient performance,and the design of hardware and software of its Input and Analogue Output have common peculiarities.

The working principium is: the voltage (current) sign is sent to the input circuit, it is transformed to standard voltage (current) sign, and has powerful drive power.

In this paper, the equivalent circuit method is used in analysing the performance of the vibrating system of an electropneumatic loudspeaker, and results are given for the input impedance and displacement amplitude as functions of frequency, and applied to typical designs of this kind of loudspeakers, illustrating the value of equivalent circuit analysis in guiding its practical design. The electrical driving power required for the vibrating system is proportional to the fourth power of the mechanical...

In this paper, the equivalent circuit method is used in analysing the performance of the vibrating system of an electropneumatic loudspeaker, and results are given for the input impedance and displacement amplitude as functions of frequency, and applied to typical designs of this kind of loudspeakers, illustrating the value of equivalent circuit analysis in guiding its practical design. The electrical driving power required for the vibrating system is proportional to the fourth power of the mechanical resonance frequency, which is the upper limit of the frequency range of the electro-pneumatic loudspeaker. Thus the high frequency performance is poor. The optimum condition is found for a flat frequency response below the mechanical resonance frequency. Experiments show that under the optimum condition the high frequency response improves slightly with increase of the magnetic induction in the gap of the magnetic structure. Experimental results agree well with theory, and sound pressure levels up to 181 or 184.8 dB re 2 X 10-5 N/m2 under different conditions were obtained in the horn thoat of the loudspeaker.

A new-type forging manipulator, the dual-motion manipulator employing full hydraulic drive possesses the advantages of action, low driving power, steady operation and high suitability for automatic control at high speed. And the reasons for those are also given.Apart from the results obtained from a study of an analogue manipulator, this paper makes an analysis of the essence of the controlling forging feed and a suggestion for a new control system.It is shown that the use of dual-motion structure...

A new-type forging manipulator, the dual-motion manipulator employing full hydraulic drive possesses the advantages of action, low driving power, steady operation and high suitability for automatic control at high speed. And the reasons for those are also given.Apart from the results obtained from a study of an analogue manipulator, this paper makes an analysis of the essence of the controlling forging feed and a suggestion for a new control system.It is shown that the use of dual-motion structure is the key to high operating speed and calculations can be made by means of kinematic analysis.

Such a common controlled member discussed in this paper is used toconcentrically control some multiposition members so that to change theirfunctions of the motion and the driving power. Formerly, it was limitedonly to design an individual cam and so difficult as to obtain an effectivescheme even by method of trials and errors. Now a great variety of problemsof common controlled members can be solved conveniently by application ofsuggested methods. Moreover, it may be used to optimizing design. Thefrequent...

Such a common controlled member discussed in this paper is used toconcentrically control some multiposition members so that to change theirfunctions of the motion and the driving power. Formerly, it was limitedonly to design an individual cam and so difficult as to obtain an effectivescheme even by method of trials and errors. Now a great variety of problemsof common controlled members can be solved conveniently by application ofsuggested methods. Moreover, it may be used to optimizing design. Thefrequent changing series of common controlled members have tabulated andgraphed in order to apply simply, intuitively and conveniently. An appro-priate scheme therefore may be directly selected as required. It is givenfor examples.