A recent electronic control circuit to a throttle device

The main objective of this paper is to conceive a recent electronic control circuit to the throttle device. The throttle mechanical actuator is the most important part in an automotive gasoline engine. Among the different control strategies recently reported, an easy to implement control scheme is an open research topic in the analog electronic engineering field. Hence, by using the nonlinear dwell switching control theory, an analog electronic control unit is proposed to manipulate an automotive throttle plate. Due to the switching mechanism is commuting between a stable and an unstable controllers, the resultant closed-loop system is enough robust to the control objective This fact is experimentally evidenced. The proposed electronic controller uses operational amplifiers along with an Arduino unit. This unit is just employed to generate the related switching signal that can be replaced by using, for instance, the timer IC555. Thus, this study is a contribution on design and realization of an electronic control circuit to the throttle device.Peer ReviewedPostprint (published version

Pengendali Modus Luncur Integral pada Posisi Panel Surya Penjejakan Dua Sumbu

Kebanyakan panel surya di dunia diletakkan pada posisi yang tetap, tidak berubah-ubah. Untuk memaksimalkan fungsi dari panel surya, dapat menggunakan penjajak surya yang orientasinya bisa mengikuti cahaya matahari. Sistem penjajakan panel surya dua arah digerakkan oleh dua motor DC yang dikendalikan melalui Arduino Mega 2560. Sedangkan sensor yang digunakan adalah sensor Light Dependent Resistor (LDR) yang memiliki prinsip kerja semakin tinggi intensitas cahaya yang mengenai sensor, semakin rendah resistansi sensor. Pembacaan posisi dilakukan dengan menggunakan potensiometer. Dengan menggunakan sistem penjejakan surya dua arah diharapkan daya yang dibangkitkan oleh panel surya lebih besar dari pada sistem penjajakan surya satu arah dan panel surya posisi tetap. Dengan kendali modus luncur integral, diharapkan respon sistem menjadi lebih baik dan lebih cepat. Kendali Modus Luncur Integral dilakukan dengan dua tahap. Tahap pertama adalah membuat desain permukaan luncur yang memenuhi spesifikasi desain. Yang kedua pemilihan sinyal kontrol yang akan membuat sistem berada pada permukaan luncur Dari hasil pengujian yang diperoleh, dengan penerapan kendali modus luncur dapat dan memperbaiki respon menjadi 0,139s untuk sumbu y dan 0,412s untuk sumbu x tanpa overshoot

A Composite Sliding Mode Control for SPMSM Drives Based on a New Hybrid Reaching Law with Disturbance Compensation

This article presents a composite sliding mode control (CSMC) method for speed control of surface-mounted permanent magnet synchronous motors (SPMSMs). The proposed CSMC consists of a new sliding mode control (SMC) based on a novel hybrid reaching law (HRL) and an extended sliding mode disturbance observer (ESMDO). The new HRL is composed of two parts: A terminal reaching part and an exponential plus proportional reaching part. It can effectively suppress the chattering and reduce the reaching time compared with the conventional constant plus proportional rate reaching law (CPRL). The ESMDO is designed based on CPRL. It can estimate the extra chattering produced by the drive system's lumped disturbance and compensate for the controller's output. Based on the proposed new SMC and ESMDO, an antidisturbance sliding mode speed controller is designed to improve the performance of SPMSM drive systems. The performance of the proposed method has been validated experimentally and compared with the CPRL-based SMC methods under different conditions