出版社：Society for Microwave Technique, Technologies and Systems, Serbia and Montenegro IEEE MTT-S Chapter
摘要：In his patent [1], [2] "Electro-Magnetic Motor" of May 1, 1888, Tesla wrote: "Be it known that I, Nikola Tesla, a subject of the Emperor of Austria, from Smiljan, Lika, border country of Austria-Hungary, now residing in New York, in the country and State of New York, has invented certain new Improvements in Electro-Magnetic Motors, of w hich the follow ing is a specification ..." Tesla continued writing about the mode of operation, principles of construction, and advantages of the alternating current motor called today as the induction or asynchronous motor. Several original patents (see, for example, [3]) for Tesla's induction motor, polyphase system for the transmission of the electrical pow er, and a further series of over 40 patents within the same field from 1887 to 1891 make consistent Tesla's system of the generation, transmission, and various ways of application of alternative electric energy. From the late nineteenth century to these days, Tesla's motor w as advantageously used in many applications where the torque capabilities, acceleration characteristics, power density, and high degree of reliability are indispensable. Nevertheless, in the design of high performance electrical drives, the choice of DC motor w as preferable, since its torque and flux are controlled independently through two separate terminals. To match this suitable feature of DC motor in servo applications, the concept of vector control [4], [5] was developed to enable decoupled control of the flux and torque of induction motor; thus, Tesla's motor may enable control characteristics of DC motor [6]. In this paper, it is shown how Tesla's induction motor can be applied in the design of speed digitally controlled servo drive in the presence of immeasurable arbitrary torque disturbances. For rejection of effects of torque disturbance on the steady-state value of motor speed the principle of absorption [7], [8] is applied in the design of disturbance estimator within the control portion of the system controlling structure
