The role of the striatal adenylyl cyclase (AC) and cholinergic systems in the learning and expression of new forepaw movements (reaching with prolonged pushing on a fixed piston) was studied in male Wistar rats. Motor learning processes, prenatal hypoxia, and cholinergic drugs changed the properties of the AC system in the striatum. After learning, the striatal basal AC activity was decreased c...

Hour meter adalah instrument untuk mengukur lama penggunaan peralatan yang biasa digunakan pada sistem runtime. Tujuan hour memonitor alat sebagai dasar perawatan tersebut. Pada penelitian ini bertujuan mengumpulkan data running saat kondisi berbeban secara online satu server, sehingga dapat lebih mudah memonitor. Menggunakan sensor arus beban kerja dan motor listrik. Data dikirim oleh mikrokon...

This paper is designed and developed to have the general as well as basic knowledge about the modern electronic device named ‘Stepper motor’. A step motor can be viewed as a synchronous AC motor with the number of poles (on both rotor and stator) increased, taking care that they have no common denominator. Additionally, we have discussed about its characteristics, classification, operation, adv...

An AC chopper controller with symmetrical Pulse-Width Modulation (PWM) is proposed to achieve better performance for a single-phase induction motor compared to phase-angle control line-commutated voltage controllers and integral-cycle control of thyristors. Forced commutated device IGBT controlled by a microcontroller was used in the AC chopper which has the advantages of simplicity, ability to...

It has been proven that fuzzy controllers are capable of controlling non-linear systems where it is cumbersome to develop conventional controllers based on mathematical modeling. This paper describes designing fuzzy controllers for an AC motor run mechanism. It also compares performance of two controllers designed based on Mamdani and Takagi-Sugeno with the conventional control scheme in a shor...

It has been proven that fuzzy controllers are capable of controlling non-linear systems where it is cumbersome to develop conventional controllers based on mathematical modeling. This chapter describes designing fuzzy controllers for an AC motor run mechanism. It also compares performance of two controllers designed based on Mamdani and Takagi-Sugeno with the conventional control scheme in a sh...

During the last decades, the rapid development of power semiconductor devices has allowed the increased use of adjustable speed ac drives in a variety of applications, especially in the process-control industry. In many applications, the capability of controlling the speed effectively can improve the efficiency of the ac motors and thus lead to large savings in energy. Among the several approac...

This paper discusses the influence of the position feedback sensor technology in servo drive applications. Incremental encoders, resolvers, and sinusoidal encoders are considered. Different hardware and software techniques used for the processing of position measurement signals are presented. Advantages and drawbacks are discussed for each solution. The choice of the best suited position feedba...

In this paper, a comparative study of modified phase-angle, extinction-angle, and pulse width modulation control techniques for the purpose of power factor improvement of single-phase AC-AC voltage regulators have been illustrated as applied to a singlephase ac voltage converter by an example of the widely used single-phase induction motor as a dynamic load. Observations on power factor, displa...