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In this tutorial paper, we introduce the fractional order calculus and fractional order control with possible applications in biomimetic actuator control. Since purely analog type fractional order integrator can be made with certain biomimetic materials or intelligent materials in general, it is natural to advocate the concept of "intelligent control of(More)
—In this paper, with a modest amount of modeling effort, a feedback–feedforward control structure is proposed for precision motion control of a permanent magnet linear motor (PMLM) for applications which are inherently repetitive in terms of the motion trajectories. First, a proportional integral derivative (PID) feedback controller is designed using a(More)
This paper described studies on the distribution, vector and multiplication of the pathogen of ovine anaplasmosis and a complement fixation test (CFT) for the disease.Anaplasma ovis was found to be widely distributed in Northwest China and the infection rate of sheep and goats was very high. From 1986 to 1991, 2,813 sheep and goats were examined for the(More)
This paper focuses on the state-periodic adaptive compensation of cogging and Coulomb friction for permanent magnet linear motors (PMLM) executing a task repeatedly. The cogging force is considered as a position dependent disturbance and the considered Coulomb friction is non-Lipschitz at zero velocity. The key idea of our disturbance compensation method is(More)
A simple microprocessor controlled mini-electrochemical (EC) instrument integrating with square wave voltammetry (SWV) was designed and fabricated. Direct digital frequency synthesizer (DDFS) was exploited in the circuit design to generate a linear and very low frequency scanning waveform for SWV. An ultra-low bias current, a high performance operational(More)
A high-order iterative learning controller (ILC) is proposed for the tracking control of a functional neuro-muscular stimulation (FNS) system. The high-order ILC scheme may improve the transient control performance along the iteration number direction. The proposed discrete-time high-order P-type ILC updating law and the PD-type closed-loop controller(More)
An iterative learning controller (ILC) is proposed for the tracking control of functional neuromuscular stimulation (FNS) system performing the given task repeatedly. A P-type ILC updating law assisted by PD closed-loop controller is suggested for a simpler implementation. This kind of learning from repetitions control strategy supplies strong robustness in(More)
In this paper, we have developed a lightweight and cost-efficient multispectral imager payload for low cost fixed wing UAVs (Unmanned Aerial Vehicles) that need no runway for takeoff and landing. The imager is band-reconfigurable, covering both visual (RGB) and near infrared (NIR) spectrum. The number of the RGB and NIR sensors is scalable, depending on the(More)