A fuzzy logic controller to line starting performance synchronous motor for a crane system using vector control

This paper presents the design process of a synchronous motor of crane system using vector control of line starting [1]. The preliminary design is d-q model armature rotor line start synchronous motor with vector control for decreasing a starting current and torque. The design allows the synchronous motor to operate at both starting and synchronous speed. The basic equations for park transformation of the rotor-stator for proposed vector control to synchronous motor are presented [2]. The starting performance of synchronous motor, for example in crane application, requires rapid dynamics and precise regulation; hence the need of direct control is becoming an urgent demand. This type of control providesanindependent vector control of torqueand current, whichis similar to a separatelyexcited synchronous motor and offersa number ofattractivefeatures. Synchronous motorhasahighstartingtorquewhileseparately synchronous motorcanoperate abovethebase low speedinthe line starting current [3]. This paper designs study and highlights the effectiveness of the proposed vector control methods for a line starting performance of synchronous motor model parameter, using a fuzzy logic controller methods both simulation and manufacturers measured experimental data. Asteady state and transient analysis of the synchronous motor is performed belowand abovebase line starting current

Analisis Pengaruh Relationship Marketing Terhadap Loyalitas Pelanggan Toko Buku Togamas Solo

Penelitian ini bertujuan untuk mengetahui hal-hal yang mempengaruhi relationship marketing terhadap loyalitas pelanggan toko buku Togamas Solo. Penelitian ini didasarkan pada penelitian sebelumnya oleh Kaharuddin (2012), yang menyatakan Pengaruh Relationship Marketing Terhadap Loyalitas Nasabah (Studi kasus pada AIA Financial PT. Eka Agency Management Malang). Penelitian yang dilakukan dengan cara survey dan pembagian questioner kepada para pelanggan toko buku Togamas Solo. Subjek penelitian ini adalah seluruh masyarakat Solo yang menjadi pelanggan toko buku Togamas Solo. Seluruh masyarakat Solo yang menjadi pelanggan toko buku Togamas Solo memiliki peluang yang sama untuk menjadi sampel dalam penelitian ini, namun dikarenakan waktu, tenaga, biaya, dan jumlah yang banyak sehingga menyebabkan kesulitan bagi peneliti. Maka penelitian ini mengambil sampel sebanyak 50 responden. Hasil penelitian menunjukkan, variabel Financial Benefits (X1) mempunyai nilai probabilitas sebesar 0,017 (< 5%) sehingga variabel Financial Benefits (X1) berpengaruh terhadap Loyalitas Pelanggan (Y). Untuk variable Social Benefits (X2) mempunyai nilai probabilitas sebesar 0,027 dibawah 0,05 artinya Social Benefits (X2) berpengaruh terhadap Loyalitas Pelanggan (Y), sedangkan untuk variable Structural Ties (X3) nilai probabilitas diatas 0,05 yaitu 0,611 sehingga variabel Structural Ties (X3) tidak cukup untuk menjelaskan variabel Loyalitas Pelanggan (Y)

Mengembangkan Self Regulation Dalam Etika Komunikasi

The existence of codes of conduct in communication field is still interesting to be discussed. Not many practioners and people consider to this conduct while they were doing their jobs. They have major problems in dealing with ethics issues, especially when communicationg in the publics arena. Communications freedom and communications technology are accussed as caustive prima of communications ethics problems. To solve the problem, this article proposes self regulations to control our communication behaviour

Association Between Sertoli Cell-Only Syndrome, Varicocele and FSH Level in Azoospermic Patients

A varicocele is the most frequent causes of infertility because it causes damage to the testes that could increase the levels of FSH. The objectives of this study were to determine the relationship of varicocele history and the condition of Sertoli cell-only syndrome (SCOS) based on Johnson criteria from testicular biopsy and the relationship of SCOS with FSH levels or testicular volume in azoospermic patients. This cross-sectional study (110 samples) used data from testicular biopsy of azoospermic patients at the Biology Department FKUI and the medical records of Urology Department FKUI-RSCM in 2011-2015. Johnson&rsquo;s criteria for most patients were 5 with a mean criteria of 4.42 (&plusmn;1.997). The Johnson criteria of 2 in the biopsy results or SCOS is 21 (19.1%). In patients with a history of varicocele, there were only 10 (27.8%) patients with SCOS (p=0.378). There was no association between SCOS and the history of varicocele. Patients without SCOS have mean FSH levels of 14.1&plusmn; 8.6IU/L and patients with SCOS have mean FSH of 21.3&plusmn;7.5IU/L. There was significant difference mean of FSH level (paired t test, p&lt;0,05), which is 7,247 in SCOS group and non-SCOS. There were 36 testes with the Johnson criteria of 2 and 157 testes having values above 2. The SCOS and non-SCOS group testicular volumes were significantly different (Mann-Whitney test, p=0.018). Varicocele could not be used as an indicator of SCOS, however high levels of FSH may indicate SCOS in azoospermic patients

Peranan BIMAS dan INMAS Dalam Peningkatan Perekonomian Masyarakat = The role of BIMAS and INMAS in increasing the economy

Kata kunci: BIMAS, INMAS, perekonomian rakya