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This paper gives stability analysis of the nonlinear predictive control strategy based on the off-line identified RBF-ARX model which is a pseudo-linear time-varying ARX model with system working-point dependent Gaussian RBF neural network style coefficients. The predictive controller doesn't require on-line parameter estimation; it may be applied to a class of smooth nonlinear processes whose working-point...
Lately, it is required that the bandwidth of PWM power amplifier is extended. For example, it is in application of the testing power supply of a low frequency immunity examination, or a class-D amplifier. In this paper, we show that the bandwidth of PWM power amplifier can be extended by using an Approximate 2DOF Digital Controller. This controller is implemented on a DSP. It is demonstrated from...
As is well known, an advanced knowledge and know-how of human are needed in the operation support work. Further, human expert can cope with the recent trend of machine dynamics. Usually, the diagnosis works have been privately performed in the brain of the individuals, and its information were not shared. Recently, the number of experts is decreasing and it becomes important to maintain and to extend...
In this paper a parameter determining method of digital controller is proposed for spreading capacitance load range more and improving transient characteristics for inductance load. In the previous proposed controller, the configuration of the controller is the same to all loads. At inductive load, there is a possibility that the transient characteristics may become bad and the specification may not...
If the lines which connect the output terminal of DC-DC converter and the load are long, the voltage actually across load will be changed largely to produce the voltage drops by the impedances of the lines. Then, the terminal which senses the voltage across load is prepared apart from the output terminal of DC-DC converter, and it leads to the load, and the voltage across load is adjusted so that...
If the lines which connect the output terminal of DC-DC converter and the load are long, the voltage actually across load will be changed largely to produce the voltage drops by the impedances of the lines. Then, the terminal which senses the voltage across load is prepared apart from the output terminal of DC-DC converter, and it leads to the load, and the voltage across load is adjusted so that...
In this paper, we propose a nonlinear state feedback control law to satisfy a constraint on state variables. The constraint is expressed as an algebraic equation containing a scalar nonlinear function such as an energy function or a limit cycle. Computing the time-derivative of the scalar function that defines the constraint of the state variables, we derive a nonlinear controller to regulate the...
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